Identification_Information:
  Citation:
    Citation_Information:
      Originator: Rabalais, N.
      Publication_Date: Unknown
      Title: Louisiana Coastal Hypoxia Shelfwide Survey, July 1997
      Geospatial_Data_Presentation_Form: Database
  Description:
    Abstract:
      Two sets of CTD data were taken during the July 23 - 29, 1997 survey
      of the Louisiana continental shelf. Hydrographic data were obtained
      with the LUMCON SeaBird 911+ CTD system and a Hydrolab Surveyor 3.
      Nutrient, Pigment, Suspended Sediment, Surface Salinity and Station
      Information data were also acquired.
    Purpose:
      The physical, biological and chemical data collected are part of a
      long-term coastal Louisiana dataset. The goal is to understand
      physical and biological processes that contribute to the causes of
      hypoxia and use the data to support environmental models for use by
      resource managers.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19970723
        Beginning_Time: Unknown
        Ending_Date: 19970729
        Ending_Time: Unknown
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Description_of_Geographic_Extent: Louisiana coastal waters, Northwestern Gulf of Mexico.
    Bounding_Coordinates:
      West_Bounding_Coordinate: -93.7
      East_Bounding_Coordinate: -89.4
      North_Bounding_Coordinate: 29.8
      South_Bounding_Coordinate: 28.4
    Data_Set_G-Polygon:
      Data_Set_G-Polygon_Outer_G-Ring:
        G-Ring_Point:
          G-Ring_Latitude: 29.8
          G-Ring_Longitude: -93.8
        G-Ring_Point:
          G-Ring_Latitude: 28.4
          G-Ring_Longitude: -89.3
        G-Ring_Point:
          G-Ring_Latitude: 28.4
          G-Ring_Longitude: -93.8
        G-Ring_Point:
          G-Ring_Latitude: 29.8
          G-Ring_Longitude: -89.3
        G-Ring_Point:
          G-Ring_Latitude: -29.8
          G-Ring_Longitude: -93.8
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: GCMD NASA's Global Change Master Dir. THEME
      Theme_Keyword:
        EARTH SCIENCE > Biosphere  > Ecological Dynamics  >
        Biogeochemical Cycles
      Theme_Keyword:
        EARTH SCIENCE > Biosphere  > Ecological Dynamics  > Nutrient
        Cycling
      Theme_Keyword: EARTH SCIENCE > Biosphere  > Ecological Dynamics  > Oxygen Demand
      Theme_Keyword:
        EARTH SCIENCE > Biosphere  > Ecological Dynamics  > Primary
        Production
      Theme_Keyword:
        EARTH SCIENCE > Human Dimensions  > Environmental Impacts  >
        Eutrophication
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Chlorophyll
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Conductivity
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Light Transmission
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Nitrogen Compounds
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Nutrients
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Oxygen
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > pH
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Suspended Solids
      Theme_Keyword: EARTH SCIENCE > Hydrosphere  > Water Quality  > Water Temperature
      Theme_Keyword: EARTH SCIENCE > Oceans  > Coastal Processes
      Theme_Keyword:
        EARTH SCIENCE > Biosphere  > Ecological Dynamics  >
        Biogeochemical Cycles
      Theme_Keyword: EARTH SCIENCE > Oceans  > Marine Environment Monitoring
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Ammonia > Ammonium
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Biogeochemical Cycles
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Chlorophyll
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Nitrate
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Nitrite
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Nitrogen
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Nutrients
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Oxygen
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > pH
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Phosphate
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Pigments
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Chemistry  > Silicate
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Circulation  > Fronts
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Optics  > Secchi Depth
      Theme_Keyword: EARTH SCIENCE > Oceans  > Ocean Temperature
      Theme_Keyword: EARTH SCIENCE > Oceans  > Salinity/Density
    Place:
      Place_Keyword_Thesaurus: GCMD NASA's Global Change Master Dir. PLACE
      Place_Keyword: Gulf Of Mexico
      Place_Keyword: North Atlantic Ocean
      Place_Keyword: United States Of America
      Place_Keyword: North America
      Place_Keyword: Northern Hemisphere
      Place_Keyword: Sea Surface
  Taxonomy:
    Keywords/Taxon:
      Taxonomic_Keyword_Thesaurus: None
      Taxonomic_Keywords: None
    Taxonomic_Classification:
      Taxon_Rank_Name: Kingdom
      Taxon_Rank_Value: Not applicable.
  Access_Constraints: None
  Use_Constraints:
    1. Dataset credit required. 2. Experience with similar datasets has
    shown that when data are plotted or used in further analysis, outlying
    values may occasionally be discovered. Please report any possible
    problems with the data to N. Rabalais.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Nancy N. Rabalais
        Contact_Organization: Louisiana Universities Marine Consortium
      Contact_Address:
        Address_Type: mailing address
        Address: Louisiana Universities Marine Consortium 8124 Hwy 56
        City: Chauvin
        State_or_Province: LA
        Postal_Code: 70344
        Country: USA
      Contact_Voice_Telephone: 985 851 2800
      Contact_Facsimile_Telephone: 985 851 2874
      Contact_Electronic_Mail_Address: Unknown
  Data_Set_Credit:
    Rabalais, N.N., Turner, R.E. and Wiseman Jr, W.J. Funding: Funds for the
    research were provided by the National Oceanographic and Atmospheric
    Administration, National Ocean Service, the Louisiana Sea Grant Program,
    and Louisiana Universities Marine Consortium.
  Security_Information:
    Security_Classification_System: None
    Security_Classification: Unclassified
    Security_Handling_Description: None
  Native_Data_Set_Environment: Windows 2000, MSAccess 2000
  Analytical_Tool:
    Analytical_Tool_Description: Autoanalyzer
    Tool_Access_Information:
      Tool_Access_Instructions: Unknown.
    Tool_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Tom Oswald
        Contact_Address:
          Address_Type: mailing address
          Address: 110 Coastal Studies Coastal Ecology Institute LSU
          City: Baton Rouge
          State_or_Province: LA
          Postal_Code: 70803
        Contact_Voice_Telephone: 225 388-6700
        Contact_Electronic_Mail_Address: Unknown
  Analytical_Tool:
    Analytical_Tool_Description: CTD
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Sea-Bird Electronics
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Sea-Bird Electronics, Inc.
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 1808 136th Place NE
          City: Bellevue
          State_or_Province: WA
          Postal_Code: 98005
          Country: USA
        Contact_Voice_Telephone: 425 643-9866
        Contact_Electronic_Mail_Address: seabird@seabird.com
  Analytical_Tool:
    Analytical_Tool_Description: CTD
    Tool_Access_Information:
      Tool_Access_Instructions: Contact HydroLab Corporation
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Hydrolab Corporation
        Contact_Address:
          Address_Type: mailing address
          Address: 8700 Cameron Road
          City: Austin
          State_or_Province: TX
          Postal_Code: 78754
          Country: US
        Contact_Voice_Telephone: 800-949-3766
        Contact_Electronic_Mail_Address: techsupport@hydrolab.com
  Analytical_Tool:
    Analytical_Tool_Description: Portable salinometer
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Guildine Instruments
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Guildline Instruments
        Contact_Address:
          Address_Type: mailing address
          Address: 103 Commerce Street, Suite 160
          City: Lake Mary
          State_or_Province: FL
          Postal_Code: 32746
          Country: US
        Contact_Voice_Telephone: 800-232-4536
        Contact_Electronic_Mail_Address: sales@guildline.com
  Analytical_Tool:
    Analytical_Tool_Description: Transmissometer
    Tool_Access_Information:
      Tool_Access_Instructions:
        Sea Tech, Inc. was acquired by Wet Labs, Inc. as of June 1,
        1998. Contact Wet Labs, Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Wet Labs, Inc.
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 620 Applegate St.
          City: Philomath
          State_or_Province: OR
          Postal_Code: 97370-0518
          Country: US
        Contact_Voice_Telephone: 541 929-5650
  Analytical_Tool:
    Analytical_Tool_Description: Beckman type dissolved oxygen sensor.
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Sea-Bird Electronics, Inc.
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 1808 136th Place NE
          City: Bellevue
          State_or_Province: WA
          Postal_Code: 98005
          Country: USA
        Contact_Voice_Telephone: 425 643-9866
        Contact_Electronic_Mail_Address: seabird@seabird.com
  Analytical_Tool:
    Analytical_Tool_Description: Conductivity sensor.
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Sea-Bird Electronics, Inc.
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 1808 136th Place NE
          City: Bellevue
          State_or_Province: WA
          Postal_Code: 98005
          Country: USA
        Contact_Voice_Telephone: 425 643-9866
        Contact_Electronic_Mail_Address: seabird@seabird.com
  Analytical_Tool:
    Analytical_Tool_Description: Fluorometer
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Chelsea Technologies Group
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Chelsea Technologies Group
        Contact_Address:
          Address_Type: mailing address
          Address: 55 Central Avenue
          City: West Molesey
          State_or_Province: Surrey
          Postal_Code: KT8 2QZ
          Country: UK
        Contact_Voice_Telephone: +44 (0)20 84819000
        Contact_Electronic_Mail_Address: sales@chelsea.co.uk
  Analytical_Tool:
    Analytical_Tool_Description: Fathometer
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Odom Hydrographic Systems, Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Odom Hydrographic Systems, Inc.
        Contact_Address:
          Address_Type: mailing address
          Address: 1450 Seaboard Ave
          City: Baton Rouge
          State_or_Province: LA
          Postal_Code: 70810
          Country: USA
        Contact_Voice_Telephone: 225 769-3051
        Contact_Electronic_Mail_Address: email@odomhydrographic.com
  Analytical_Tool:
    Analytical_Tool_Description: Global positioning system.
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Trimble Navigation Ltd
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Trimble Navigation Ltd
        Contact_Address:
          Address_Type: mailing address
          Address: 645 North Mary Ave.
          City: Sunnyvale
          State_or_Province: CA
          Postal_Code: 94088-3642
          Country: US
        Contact_Voice_Telephone: 408 481 800
  Analytical_Tool:
    Analytical_Tool_Description: Pressure sensor.
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Sea-Bird Electronics, Inc.
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 1808 136th Place NE
          City: Bellevue
          State_or_Province: WA
          Postal_Code: 98005
          Country: USA
        Contact_Voice_Telephone: 425 643-9866
        Contact_Electronic_Mail_Address: seabird@seabird.com
  Analytical_Tool:
    Analytical_Tool_Description: Titrator.
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Mettler Toledo
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Mettler Toledo
        Contact_Address:
          Address_Type: mailing address
          Address: Mettler Toledo, Inc. 1900 Polaris Parkway
          City: Columbus
          State_or_Province: OH
          Postal_Code: 43240
          Country: USA
        Contact_Voice_Telephone: 1 800 523-5123
  Analytical_Tool:
    Analytical_Tool_Description: Pump.
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Sea-Bird Electronics, Inc.
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 1808 136th Place NE
          City: Bellevue
          State_or_Province: WA
          Postal_Code: 98005
          Country: USA
        Contact_Voice_Telephone: 425 643-9866
        Contact_Electronic_Mail_Address: seabird@seabird.com
  Analytical_Tool:
    Analytical_Tool_Description: Differential Global Positioning System
    Tool_Access_Information:
      Tool_Access_Instructions: Contact Starlink Inc.
    Tool_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Starlink Incorporated
        Contact_Address:
          Address_Type: mailing address
          Address: 500 Center Ridge Drive, Suite 600
          City: Austin
          State_or_Province: TX
          Postal_Code: 78753
          Country: US
        Contact_Voice_Telephone: 512 454-5511
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      S797HydroLab: The Hydrolab Surveyor 3 Conductivity, pH and Oxygen
      sensors were serviced and calibrated before deployment and
      maintained in accordance with Hydrolab recommended procedures. The
      Sonde and Logger are returned to the factory at least annually for
      inspection and service. Percent oxygen saturation for Hydrolab
      values above 175% saturation were derived from the figure given in
      Green and Carritt, 1967, J. Mar. Res., 25(2):140-147.

      S797Nutrient: Nutrient analyses were conducted by Tom Oswald under
      the supervision of R. E. Turner.

      S797Pigment: The Turner Designs model 10 fluorometer was calibrated
      for chlorophyll a against a chemical supply house chlorophyll a
      standard measured on a spectrophotometer yearly (or more frequently
      if needed). During the cruise, the Fluorometer was blanked and
      calibrated daily in accordance with Turner Designs recommended
      procedures. Pigment measurements were supervised and quality
      controlled by Nancy Rabalais.

      S797SeaBird: Sea-Bird SBE 13-01 dissolved oxygen sensors, the
      Paroscientific Digiquartz pressure sensor, the SBE 3-01/F
      temperature sensors , SBE 5-01 pumps, and the SBE 4-01/0
      Conductivity sensors were factory tested and calibrated at Sea-Bird
      recommended intervals and maintained and serviced by RV Pelican
      Electronic Technical support staff in accordance with Sea-Bird
      procedures. The Sea Tech 5.0 cm Transmissometer was factory tested
      and calibrated at Sea Tech recommended intervals and maintained and
      serviced by RV Pelican Electronic Technical support staff in
      accordance with Sea Tech procedures. The Chelsea AQUATRAKA III
      Fluorometer was factory tested and calibrated at Chelsea Instruments
      recommended intervals and maintained and serviced by RV Pelican
      Electronic Technical support staff in accordance with Chelsea
      procedures.

      Oxygen sensors were calibrated using the procedures described in
      Seabird APPLICATION NOTE NO. 13-1, Rev. D. The Winkler Titration
      (OXFITW) oxygen value was determined chemically from replicate
      samples processed using a Mettler DL21 Titrator. Shipboard Winkler
      titrations during the cruise were used to develop a regression
      against CTD data, which were corrected if necessary. A correction
      was not needed for the July 1997 CTD oxygen data because there was
      good agreement of SeaBird CTD values with Winkler values and bottom
      values obtained from the HydroLab CTD.

      Winkler titrations were conducted under the supervision of Nancy
      Rabalais. Data reductions from the SeaBird were generated by Ben
      Cole and quality controlled by Nancy Rabalais.

      S797-Stn: Times and locations of operations were acquired from RV
      Pelican's Multiple Instrument Data Acquisition System (MIDAS) which
      was maintained by the ship's electronic staff. Navigational data
      were acquired from a Starlink differential GPS or a Trimble GPS with
      a Micronet Receiver Station with sub 5-meter accuracy. Station
      depths were logged from the ships Odom Echotrac II fathometer. The
      Secchi disk depths were measured by hand using standard protocol.

      S797PortaSal: The samples were analyzed in the lab by Guildline
      Instruments PortaSal, using Guildine methods. Salinity analyses were
      conducted by Jim Lee under the supervision of R. E. Turner.

      S797SuspSed: Suspended sediment concentrations were supervised and
      quality controlled by Nancy Rabalais.

      N.B. There may have been a problem with samples collected with the
      bottom tripping Niskin. Surface PortaSal samples were collected at
      each station in order to get precise salinity values for the bucket
      samples. On transect C in addition to surface salinity samples;
      bottom salinity samples were collected from the Niskin. The salinity
      samples were read after the cruise in the laboratory using both the
      HydroLab and the PortaSal.

      PortaSal salinity readings matched those taken in the lab with the
      Hydrolab.  Surface salinity data recorded in the field also
      corresponded well with the PortaSal data.  Bottom salinities
      recorded in the field with the Hydrolab and CTD, however, were an
      average of 4 ppt higher than those recorded in the lab with the
      Hydrolab and PortaSal using water taken from the horizontally
      mounted bottom-tripping Niskin.  Lab values ranged between 1.0 and
      6.7 ppt lower than field samples.

      Since the proper functioning of the Hydrolab was supported by the
      PortaSal and the CTD, the water from the horizontal Niskin does not
      appear to have been collected at the bottom.  Smaller discrepancies
      (< 1 ppt) could be expected due to the Niskin not sampling at
      exactly the same location as the other instruments.  Differences of
      > 3 ppt, however, are highly unlikely.  Water column data suggest
      that the horizontally mounted Niskin sample salinities would have
      been encountered above the bottom.

      The horizontal Niskin was used to collect bottom water samples at
      all stations, but bottom salinity samples were collected only for
      transect C.  The possibility exists that other bottom samples also
      had salinities that differed from those recorded by the Hydrolab or
      CTD.  The "bottom" samples may not represent bottom water.

      N. Rabalais performed an additional procedure in
      quality-control/quality-assurance by evaluating relationships
      between the data in S797PortaSal, S797HydroLab, S797Nutrient,
      S797Pigment, S797-Stn and S797SuspSed.
  Logical_Consistency_Report:
    At stations A'4, A'5, A7 and B6 maximum HydroLab p-sensor depth is
    greater than station depth reported by ship's Fathometer. This may be
    attributable to drift during sampling operations. Two density sigma-t
    values are negative.
  Completeness_Report: Unknown.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Station positions are logged from the ship's differential GPS at
        the beginning of sampling operations. GPS manufacturer's
        accuracy claim is 1-5 meters 95% of the time. Wind, currents and
        tidal forces may move the ship from the beginning position.
  Lineage:
    Methodology:
      Methodology_Type: Field SeaBird
      Methodology_Description:
        The Sea-Bird CTD number of scans to average in the deck unit is
        set to one. At the beginning of each hydrocast the entire
        CTD/Rosette package was soaked while submerged 0.5m to 1.0m
        below the surface until pump flow and oxygen values observed via
        the Sea-Bird deck unit indicated the system was operating
        correctly.

        In order to minimize the effect of delays in oxygen sensor
        response time caused by temperature, sensor condition and
        plumbing configuration, the CTD package was lowered as close to
        dead slow as possible. The sensor packages were located below
        the Niskin bottles and rosette.

        At stations where the watch chief deemed the structure of the
        oxygen profile contained features useful in post-processing the
        oxygen data (AlignCTD), the CTD package was raised at the same
        speed it was lowered. At all other stations, the upcast is rapid
        in order to save time.
    Methodology:
      Methodology_Type: Field HydroLab
      Methodology_Description:
        Deployment: The HydroLab CTD was attached by chain to a lead
        weight. The weight was lowered to the bottom by hydrowire. With
        the weight on the bottom, the Hydrolab sonde was positioned just
        above the bottom. When the oxygen sensor stabilized, a data
        record of all the sensor values was stored electronically. The
        sonde was raised in approximately 0.5-meter increments, after
        D.O. sensor stabilization, data records were stored. After
        storing data for the few meters closest to the bottom, the
        Hydrolab was raised to two to three meters from the surface and
        a data record was saved. The sonde was raised, and records
        stored, in approximately 0.5-meter increments until finally a
        record was stored with the sonde submerged but as close as
        possible to the surface.
    Methodology:
      Methodology_Type: Field Pigment
      Methodology_Description:
        Water for chlorophyll analysis (30 - 100 ml) was filtered on
        board ship through GF/F (0.7 micron) filters, which are then
        fixed in 5 ml of DMSO/90% acetone (40/60) solution, allowed to
        extract for at least one hour in the dark, then measured pre-
        and post-acidification on a Turner Model 10 fluorometer.
    Methodology:
      Methodology_Type: Field PortaSal
      Methodology_Description:
        PortaSal Field: Water were collected in a triple-rinsed 500ml
        Nalgene jar from a twice-rinsed bucket of surface water. The jar
        lid was secured tightly to minimize evaporation.
    Methodology:
      Methodology_Type: Field Station Locations
      Methodology_Description:
        Field station locations: Stations were occupied along 13
        generally North-South transects across the Louisiana coastal
        shelf. Station depths ranged from 6.0 to 53.1 meters. The
        objective was to delimit and describe the area of midsummer
        bottom dissolved oxygen less than 2 (mg/L). Due to limitations
        of equipment, time and funding, this was not always possible.
        Northern end stations of transects were chosen based on the
        survey vessel's minimum depth limits for each longitude. The
        Northern extent of hypoxia was not reached on thirteen
        transects. Optimally, one or two stations South of the Southern
        most station with bottom dissolved oxygen less than 2 (mg/L)
        were sampled. The limit of hypoxia on the Southern end of all
        transect was reached. The limit of hypoxia was not reached at
        stations M1 and M3 on the Western end of the survey.
    Methodology:
      Methodology_Type: Field Nutrient
      Methodology_Description:
        Care was taken that the collector's hands were clean and avoided
        touching the water. Gloves were worn when three replicate sample
        vials and caps were triple rinsed with sample before vial
        filling and closing. Samples were not filtered. The sample vials
        were frozen for later analysis in the laboratory.
    Methodology:
      Methodology_Type: Field Suspended Sediments
      Methodology_Description:
        Water (approximately 300 to 1000 ml) was filtered on board ship
        through pre-weighed GF/F filters, rinsed with distilled water.
        The filters were placed in Petri dishes and frozen for later
        analysis.
    Methodology:
      Methodology_Type: Lab Suspended Sediments
      Methodology_Description:
        Suspended sediment filters were dried at 40 - 60 degrees
        centigrade for 24 hours. Filters were weighed. Total suspended
        sediments was derived from volume filtered, pre-weight and post
        weight values.
    Methodology:
      Methodology_Type: Lab Nutrient
      Methodology_Description:
        Nitrogen and phosphorus are analyzed according to methods
        described in EPA publication EPA 600/4-79-020 (1979), method
        350.1 for ammonia-N, method 353.2 for nitrate/nitrite-N, and
        method 365.1 for phosphate-P. Silicate is analyzed according to
        Technicon Industrial method 186-72 W/B (1977).
    Methodology:
      Methodology_Type: Field water samples
      Methodology_Description:
        Water for chlorophyll, nutrient analyses, Portasal salinity and
        suspended sediments was collected from the surface by
        twice-rinsed bucket, from mid-water in 5-l Niskin bottles on the
        Seabird CTD/rosette system and from bottom in a 5-l bottom
        tripping Niskin bottle secured in a frame with the Hydrolab
        Surveyor 3.

        Depth values of 0 indicate a bucket sample collected from the
        surface of the water.  Deepest depths of water samples were from
        the bottom-tripping Niskin and correspond to the deepest depth
        recorded from the Hydrolab. Other depths indicate the p-sensor
        reading for 5-l Niskin bottles on the Seabird rosette. The
        Seabird p-sensor was located approx. 1 meter below the mid-point
        of the 5-l Niskin.
    Methodology:
      Methodology_Type: Lab Sea-Bird
      Methodology_Description:
        Sea-Bird CTD data were acquired and post processed using Seasoft
        version 4.225. All scans were processed without averaging or
        interpolation with a bin size of one scan. In order to improve
        alignment between oxygen sensor values and other CTD sensor
        values, the Seasoft module ALIGNCTD was used to determine which
        advance best compensated for the delay in oxygen sensor response
        time. When Seabird data were processed, dissolved oxygen was
        advanced relative to temperature and conductivity values: + 6.47
        seconds.

        Data values reported are from downcasts. Downcast scans selected
        for each CTD station were chosen to illustrate: 1) data values
        as near to the surface as possible, 2) data values at whole
        meter increments, and 3) data values as close to the bottom as
        the CTD was lowered. In certain cases where data values of a
        parameter changed significantly between whole meter increments,
        0.1- or 0.2-meter scans were selected.
  Cloud_Cover: 0
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 91
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.0001
      Longitude_Resolution: 0.0001
      Geographic_Coordinate_Units: Degrees and decimal minutes
    Geodetic_Model:
      Horizontal_Datum_Name: WGS84
      Ellipsoid_Name: WGS84
      Semi-major_Axis: 6378137
      Denominator_of_Flattening_Ratio: 298.257223563
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797PortaSal
      Entity_Type_Definition:
        The table lists station, depth and salinity (psu) values
        measured using a Guildline Instruments PortaSal. There are 89
        records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: Depth
      Attribute_Definition: Depth of HydroLab p sensor, 0.0 depth = bucket sample.
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 30.3
          Attribute_Units_of_Measure: Meters
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: PortaSal
      Attribute_Definition: Salinity (psu)
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 3.928
          Range_Domain_Maximum: 35.119
          Attribute_Units_of_Measure: psu
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 4
          Range_Domain_Maximum: 89
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797HydroLab
      Entity_Type_Definition:
        The table lists Hydrolab CTD station density, dissolved oxygen,
        percent oxygen saturation, pH, salinity, specific conductance
        and temperature values at depths. There are 849 records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: Density
      Attribute_Definition: Density sigma-t
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -4.51
          Range_Domain_Maximum: 25.35
          Attribute_Units_of_Measure: Density sigma-t
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Depth
      Attribute_Definition: Depth of HydroLab pressure sensor
      Attribute_Definition_Source: Producer Defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.0
          Range_Domain_Maximum: 53.2
          Attribute_Units_of_Measure: Meters
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: DO
      Attribute_Definition: Dissolved oxygen
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.05
          Range_Domain_Maximum: 16.84
          Attribute_Units_of_Measure: mg/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: DOPctSat
      Attribute_Definition: Oxygen percent saturation
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.8
          Range_Domain_Maximum: 236
          Attribute_Units_of_Measure: Percent
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: pH
      Attribute_Definition: pH
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 7.5
          Range_Domain_Maximum: 8.87
          Attribute_Units_of_Measure: pH units
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Salin
      Attribute_Definition: Salinity
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.4
          Range_Domain_Maximum: 36.4
          Attribute_Units_of_Measure: psu
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: SpCond
      Attribute_Definition: Specific conductance
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.8
          Range_Domain_Maximum: 54.9
          Attribute_Units_of_Measure: mS/cm
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 8
          Range_Domain_Maximum: 90
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Temp
      Attribute_Definition: Temperature
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 18.84
          Range_Domain_Maximum: 33.71
          Attribute_Units_of_Measure: Degrees centigrade
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797Nutrient
      Entity_Type_Definition:
        The table lists station NH4, NO2, NO2+NO3, NO3, PO4 and SiO3
        values at depths. There are 172 records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: Depth
      Attribute_Definition: Depth of HydroLab p sensor, 0.0 depth = bucket sample.
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 53.2
          Attribute_Units_of_Measure: Meters
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: NH4
      Attribute_Definition: Ammonium
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.2
          Range_Domain_Maximum: 5.5
          Attribute_Units_of_Measure: g-at/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: NO2
      Attribute_Definition: Nitrite
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.1
          Range_Domain_Maximum: 2.5
          Attribute_Units_of_Measure: g-at/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: NO2+NO3
      Attribute_Definition: Nitrite + Nitrate
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.1
          Range_Domain_Maximum: 100.5
          Attribute_Units_of_Measure: g-at/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: NO3
      Attribute_Definition: Nitrate
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100.1
          Attribute_Units_of_Measure: g-at/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: PO4
      Attribute_Definition: Phosphate
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.1
          Range_Domain_Maximum: 2.9
          Attribute_Units_of_Measure: g-at/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: SiO3
      Attribute_Definition: Silicate
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.6
          Range_Domain_Maximum: 99.4
          Attribute_Units_of_Measure: g-at/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 4
          Range_Domain_Maximum: 89
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970723
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797Pigment
      Entity_Type_Definition:
        The table lists station mean chlorophyll a, Fo/Fa ratio, mean
        phaeopigment and mean total pigment values at depths. There are
        172 records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: MeanC
      Attribute_Definition: Mean Chlorophyll a
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.13
          Range_Domain_Maximum: 301.39
          Attribute_Units_of_Measure: g/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: MeanF
      Attribute_Definition: Mean Fo/Fa ratio
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1.47
          Range_Domain_Maximum: 5.44
          Attribute_Units_of_Measure: FoFa ratio
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: MeanP
      Attribute_Definition: Mean Phaeopigments
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 13.07
          Attribute_Units_of_Measure: g/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: SampD
      Attribute_Definition: Depth of HydroLab p sensor, 0.0 depth = bucket sample.
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 53.2
          Attribute_Units_of_Measure: Meters
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 4
          Range_Domain_Maximum: 90
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Total
      Attribute_Definition: Total pigments
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.17
          Range_Domain_Maximum: 310.06
          Attribute_Units_of_Measure: g/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797SeaBird
      Entity_Type_Definition:
        The table lists SeaBird CTD cast station conductivity, density,
        oxygen percent saturation, fluorometer voltage, dissolved
        oxygen, salinity, temperature and percent light transmission
        values at depths. There are 1772 records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: Cond
      Attribute_Definition: Conductivity
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 3.046271
          Range_Domain_Maximum: 5.640157
          Attribute_Units_of_Measure: S/m
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Density
      Attribute_Definition: Density
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 8.2957
          Range_Domain_Maximum: 26.1003
          Attribute_Units_of_Measure: sigma-t
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Depth
      Attribute_Definition: Depth of SeaBird pressure sensor.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1.244
          Range_Domain_Maximum: 52.345
          Attribute_Units_of_Measure: Meters
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: DOPctSat
      Attribute_Definition: Percent oxygen saturation.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1.65277
          Range_Domain_Maximum: 195.18154
          Attribute_Units_of_Measure: Percent
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: FluorV
      Attribute_Definition: Fluorometer voltage.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.7619
          Range_Domain_Maximum: 17.74
          Attribute_Units_of_Measure: Voltage
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: OxMg/L
      Attribute_Definition: Dissolved oxygen
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.1114
          Range_Domain_Maximum: 12.88994
          Attribute_Units_of_Measure: mg/L
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Sal
      Attribute_Definition: Salinity
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 16.9964
          Range_Domain_Maximum: 36.9588
          Attribute_Units_of_Measure: psu
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 8
          Range_Domain_Maximum: 91
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Temp
      Attribute_Definition: Temperature
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 18.5978
          Range_Domain_Maximum: 32.207
          Attribute_Units_of_Measure: Degrees centigrade
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Xmiss
      Attribute_Definition: Percent light transmission
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 39.72
          Range_Domain_Maximum: 97.41
          Attribute_Units_of_Measure: Percent
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797-Stn
      Entity_Type_Definition:
        The table lists station date, depth, latitude, longitude, Secchi
        disk, time of HydroLab CTD cast, time of SeaBird CTD cast and
        time of suspended sediment sample values. There are 91 records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: Date
      Attribute_Definition:
        Date station was sampled. (Date can be different for suspended
        sediment, HydroLab CTD cast and SeaBird CTD cast at same
        station).
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 19970723
          Range_Domain_Maximum: 19970729
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Fath
      Attribute_Definition:
        Depth of Station as measured by RV Pelican's fathometer
        corrected for hull depth.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 6
          Range_Domain_Maximum: 53.1
          Attribute_Units_of_Measure: Meters
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Latitude
      Attribute_Definition: Latitude of sampling station.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 28.4987
          Range_Domain_Maximum: 29.706
          Attribute_Units_of_Measure: Decimal degrees
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: -9999
        Attribute_Value_Accuracy_Explanation:
          Latitude value was recorded from the ship's differential GPS
          at the beginning of sampling operations. GPS manufacturer's
          accuracy claim is 1-5 meters 95% of the time. Wind, currents
          and tidal forces may move the ship from the beginning
          position. Survey vessel was not anchored during sampling.
          Position at end of sample operations may have changed from
          beginning operations location. Vessel drift was generally
          less than 0.3 nm. An Accuracy value of -9999 was entered
          because accuracy could not be determined.
    Attribute:
      Attribute_Label: Longitude
      Attribute_Definition: Longitude of sampling station.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -93.6547
          Range_Domain_Maximum: -89.4347
          Attribute_Units_of_Measure: Decimal degrees
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: -9999
        Attribute_Value_Accuracy_Explanation:
          Longitude value was recorded from the ship's differential
          GPS at the beginning of sampling operations. GPS
          manufacturer's accuracy claim is 1-5 meters 95% of the time.
          Wind, currents and tidal forces may move the ship from the
          beginning position. Survey vessel was not anchored during
          sampling. Position at end of sample operations may have
          changed from beginning operations location. Vessel drift was
          generally less than 0.3 nm. An Accuracy value of -9999 was
          entered because accuracy could not be determined.
    Attribute:
      Attribute_Label: Secc
      Attribute_Definition: Secchi disk depth.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Character field. #.# = no sample. Shallowest measured sample
          was 0.9 meters. Deepest measured sample was greater than 16
          meters.
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 91
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: TimeHL
      Attribute_Definition:
        Time of beginning of HydroLab CTD cast as well as time of
        Pigment, PortaSal and Nutrient samples.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 00:04:21
          Range_Domain_Maximum: 23:39:43
          Attribute_Units_of_Measure: HH:mm:ss
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: TimeSB
      Attribute_Definition: Time of beginning of Seabird CTD cast.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 00:15:00
          Range_Domain_Maximum: 23:58:00
          Attribute_Units_of_Measure: HH:mm:ss
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: TimeSS
      Attribute_Definition: Time of suspended sediment sample.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 00:11:00
          Range_Domain_Maximum: 23:53:00
          Attribute_Units_of_Measure: HH:mm:ss
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: S797SuspSed
      Entity_Type_Definition:
        The table lists station total suspended sediment values at the
        surface. There are 86 records.
      Entity_Type_Definition_Source: None.
    Attribute:
      Attribute_Label: Sta
      Attribute_Definition: Station name of location sampled.
      Attribute_Definition_Source: Producer defined.
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
      Beginning_Date_of_Attribute_Values: 19970729
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: StnID
      Attribute_Definition: Station identification number.
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 90
          Attribute_Units_of_Measure: Integer
      Beginning_Date_of_Attribute_Values: 19970723
      Ending_Date_of_Attribute_Values: 19970729
    Attribute:
      Attribute_Label: SuspSed
      Attribute_Definition: Total suspended sediments in a surface bucket sample.
      Attribute_Definition_Source: Producer defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 3.1
          Range_Domain_Maximum: 50.22
          Attribute_Units_of_Measure: mg/L
      Beginning_Date_of_Attribute_Values: 19970729
      Ending_Date_of_Attribute_Values: 19970729
  Overview_Description:
    Entity_and_Attribute_Overview:
      The related data tables S797PortaSal, S797HydroLab, S797Nutrient,
      S797Pigment, S797SeaBird, S797-Stn and S797SuspSed contain spatial,
      temporal, physical and biological water quality data acquired during
      the July 1997 cruise. Each table contains a StnID field that can be
      used to key joins with other tables.
    Entity_and_Attribute_Detail_Citation: For detailed attribute information contact Nancy Rabalais.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Nancy N. Rabalais
        Contact_Organization: Louisiana Universities Marine Consortium
      Contact_Address:
        Address_Type: mailing address
        Address: Louisiana Universities Marine Consortium 8124 Hwy 56
        City: Chauvin
        State_or_Province: LA
        Postal_Code: 70344
        Country: USA
      Contact_Voice_Telephone: 985 851 2800
      Contact_Facsimile_Telephone: 985 851 2874
      Contact_Electronic_Mail_Address: Unknown
  Distribution_Liability:
    I, the data requestor, agree to credit the data originators in any
    publications, reports or presentations generated from this data. I also
    accept that although these data have been processed successfully on a
    computer system at the Louisiana Universities Marine Consortium, no
    warranty expressed or implied is made regarding the accuracy or utility
    of the data on any other system or for general or scientific purposes,
    nor shall the act of distribution constitute any such warranty. I
    recognize that these data are best acquired from the originator and not
    from a secondary source. I recognize that careful attention must be paid
    to the contents of the metadata file associated with these data. I will
    not hold Louisiana Universities Marine Consortium liable for improper or
    incorrect use of the data described and/or contained herein. This
    disclaimer applies both to individual use of the data and aggregate use
    with other data.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: MDB
        Format_Version_Number: 9
        File_Decompression_Technique: File compression not used.
        Transfer_Size: 0.816
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: 3-1/2 inch floppy disk or CDROM
          Recording_Format: DOS Copy
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: S797.mdb
          Access_Instructions: Contact Distributor.
    Fees: None
    Ordering_Instructions: Call, email or write the Distributor with requests for data sets.
  Standard_Order_Process:
    Fees: None.
  Custom_Order_Process: Contact distributor
Metadata_Reference_Information:
  Metadata_Date: 20020226
  Metadata_Review_Date: 20020705
  Metadata_Future_Review_Date: 20120615
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Ben Cole or Adam Sapp
        Contact_Organization: Louisiana Universities Marine Consortium
      Contact_Address:
        Address_Type: mailing address
        Address: LUMCON 8124 Hwy 56
        City: Chauvin
        State_or_Province: LA
        Postal_Code: 70344
        Country: USA
      Contact_Voice_Telephone: 985 851 2800
      Contact_Facsimile_Telephone: 985 851 2874
      Contact_Electronic_Mail_Address: Unknown
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001.1-1999
  Metadata_Time_Convention: local time
