Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Kent K. Hathaway
        Originator: Stan Boc
        Originator: U.S. Army Engineer Research and Development Center
        Originator: U.S. Army Corps. of Engineers
        Publication_Date: Unknown
        Title: Wave and Current Data from Southeast Oahu, Hawaii during August -
September 2005
    Description:
      Abstract: Field data collection was conducted for the U.S. Army Engineer District,
Pacific Ocean, Honolulu (POH), during August 9 - September 14, 2005,  
off Kailua, Lanikai, and Waimanalo, Oahu, Hawaii.  Wave and current data 
were collected at five fixed locations using bottom-mounted RD Instruments 
Workhorse, 1.2 MHz, ADCPs (Acoustic Doppler Current Profilers) and Sontek
Hydra ADVs (Acoustic Doppler Velocimeters).  The ADCPs include wave 
measurements.  

Four inexpensive current drogues (drifters) were designed and built at the 
CHL Field Research Facility (FRF) that used GPS tracking and radio telemetry 
for positioning.  Deployments were made on 10 August and 13 September.
June.
      Purpose: Learn of current and wave patterns in the bay for design considerations.
      Supplemental_Information: NOAASupplemental:
Entry_ID: Unknown
Sensor_Name: Teledyne RD Instruments 1200 kHz Workhorse moored ADCP 
Sensor_Name: Sontek Hydra ADVs (Acoustic Doppler Velocimeters) 
Sensor_Name: CHL Field Research Facility drogue drifters
Source_Name: moorings
Project_Campaign: US Army Corp. of Engineers Regional Field Study
Storage_Medium: ASCII, Matlab, MS Word    
Reference: None
Online_size: 231756 kbytes
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 20050809
          Ending_Date: 20050914
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None Planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -157.71798
        East_Bounding_Coordinate: -157.67976
        North_Bounding_Coordinate: 21.398416
        South_Bounding_Coordinate: 21.329912
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: physical data
        Theme_Keyword: coastal data
        Theme_Keyword: coral reef ecosystems
        Theme_Keyword: u-component current velocity
        Theme_Keyword: v-component current velocity
        Theme_Keyword: w-component current velocity
        Theme_Keyword: current speed
        Theme_Keyword: current direction
        Theme_Keyword: acoustic backscatter
        Theme_Keyword: temperature
        Theme_Keyword: depth
        Theme_Keyword: wave height
        Theme_Keyword: wave direction
        Theme_Keyword: wave dominant period
        Theme_Keyword: wave spectrum
        Theme_Keyword: wave directional spectrum
      Place:
        Place_Keyword_Thesaurus: None
        Place_Keyword: Pacific Ocean
        Place_Keyword: Hawaiian Islands
        Place_Keyword: Oahu
        Place_Keyword: Southeast Oahu
        Place_Keyword: Kailua
        Place_Keyword: Lanikai
        Place_Keyword: Waimanalo
      Stratum:
        Stratum_Keyword_Thesaurus: None
        Stratum_Keyword: water column, surface to 5 m
    Access_Constraints: None
    Use_Constraints: Dataset credit required
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Kent K. Hathaway
          Contact_Organization: Coastal and Hydraulics Laboratory, Field Research Facility, USACE
        Contact_Position: Research Oceanographer
        Contact_Address:
          Address_Type: mailing and physical
          Address: U.S. Army Engineer Research and Development Center
          Address: 1261 Duck Road
          City: Kitty Hawk
          State_or_Province: NC
          Postal_Code: 27949
          Country: USA
        Contact_Voice_Telephone: (252) 261-6840 (x224)
        Contact_Facsimile_Telephone: (252) 261-4432
        Contact_Electronic_Mail_Address: Kent.K.Hathaway@usace.army.mil
    Data_Set_Credit: Coastal and Hydraulics Laboratory, Field Research Facility
POH District of the U.S. Army Engineer Research and Development Center

ACKNOWLEDGEMENTS:
The field data collection
was performed for the U.S. Army Engineer District, Pacific Ocean,
Honolulu (CEPOH) with support from the U.S. Army Engineer Research and Development
Center (ERDC), Coastal and Hydraulics Laboratory's (CHL) Field Research
Facility (FRF).
    Native_Data_Set_Environment: ASCII, Matlab, MS Word
  Data_Quality_Information:
    Logical_Consistency_Report: see Process Step
    Completeness_Report: The sets were 100% complete
    Lineage:
      Process_Step:
        Process_Description: ADCP Gauges:
The ADCP gauges were RD Instruments 1200 kHz Workhorse, bottom mounted facing
upward with the sensor head approximately 0.4 m off the bottom.  Figure 2
(report) shows the custom built mount that was held to the bottom with 
about 80 lbs of lead weight.  These gauges have four acoustic transducers 
for measuring currents and a pressure sensor, from which horizontal and 
vertical current profiles were computed at 0.2 m vertical spacing.  These 
units sampled at 2 Hz for directional wave measurements.  Each hourly wave 
burst was approximately 34 minute long, starting at the top of each hour, 
and consisted of 4096 points.  There is a 0.44 m blanking distance from the 
transducer head, and with a 0.2 m bin width this makes the first sample 
0.72 m past the transducer, or about 1.12 m off the bottom.  Current profiles 
were collected every 10 minutes from a 200 point average.

Deployments were on 9 Aug 2005 and retrieved on 14 Sep 2005.  ADCP-2 was
reprogrammed on 10 Aug so collection started a day later, and the batteries
were depleted on 4 Sep, about 10 days before retrieval of the other gages.

ADV Gauges:
The three ADV gages were the Sontek's Hydra model that sample a single
point current velocity (U, V, and W) and contained an external pressure
sensor.  The instrument frame and ADV transducer are shown in Figure 3 (
report, after gauge retrieval). The sample volume for the current 
measurement is approximately 1-2 cm in size and about 0.17 m from the 
center transducer.  This unit uses three beams to determine the three 
current components.

Current Drogues:
Four inexpensive current drogues (drifters) were designed and built at the CHL
Field Research Facility (FRF) that used GPS tracking and radio telemetry for
positioning. They were constructed with off the shelf plumbing supplies (PVC
pipe, vertical risers, rubber unions, hose clamps), a Garmin Geko GPS
receivers, and MaxStream (model XStream-PKG-R) radio modems (Figure 4, report).
The sails had about a one meter cross-section. The lower vertical PCV pipe
(submerged) contained the modem and batteries, the upper horizontal pipe
contained the GPS receiver and radio antennas.  A NEMA GPS data string was
transmitted once per second and the Garmin GCP unit internally recorded
positions every 30 seconds.  These GPS units are WAAS enabled and should have
a horizontal accuracy of about 3 m.  The radio tracking was partially
successful- it required line of sight which was not possible to
simultaneously receive drifters in the Kailua and Waimanalo Bays.  Also the
antennas and connectors should be more robust, two broke during deployment.

INSTRUMENT TYPES:
RD Instruments Workhorse ADCPs (Acoustic Doppler Current Profilers)
Sontek Hydra ADVs (Acoustic Doppler Velocimeters)
current drogues (drifters)

REFERENCES: 
Similar instruments and procedures are described in:
Hathaway, K. K and S. Boc, 2008. Field Data Collection Study Final
Report: Natatorium Current Study, Waikiki, HI.  U.S. Army Engineering
POH District, Honolulu, HI., ERDC/CHL TR-08. 55p.
        Process_Date: Unknown
        Process_Contact:
          Contact_Information:
            Contact_Person_Primary:
              Contact_Person: Kent K. Hathaway
              Contact_Organization: Coastal and Hydraulics Laboratory, Field Research Facility, USACE
            Contact_Position: Research Oceanographer
            Contact_Address:
              Address_Type: mailing and physical
              Address: U.S. Army Engineer Research and Development Center
              Address: 1261 Duck Road
              City: Kitty Hawk
              State_or_Province: NC
              Postal_Code: 27949
              Country: USA
            Contact_Voice_Telephone: (252) 261-6840 (x224)
            Contact_Facsimile_Telephone: (252) 261-4432
            Contact_Electronic_Mail_Address: Kent.K.Hathaway@usace.army.mil
  Entity_and_Attribute_Information:
    Overview_Description:
      Entity_and_Attribute_Overview: DIRECTORY ORGANIZATION, FILE NAMES AND FORMATS:

Note: all times are in UTC

within ../data/

0-data/ : This directory contains the original set of directories and files
1-data/ : Directories and files prepared by NODC (such files are
          prepared if original formats are non-proprietary)

Contents of 0-data/:
Directory SoutheastOahu_FieldData/adcp1/

Files:
HI010adc.20050809_20050914.meta
HI010adc.sum.20050809_20050916.txt
Comment:
Deployment summaries from instrument configuration files.

File:
HI010adc_vac_2005_mm.txt  (mm=month, ie, 08, 09)
Comment:
Vertically averaged current (VAC) by month.  Uave = positive going
eastward (mm/s), Vave = positive going north (mm/s).

file:
readAdcpDSpec.m
comment:
Matlab code snippet to read directional wave spectra files (DSpec/).

subdirectory: adcp1/Dspec
comment:
Wave directional spectra files (reformatted) from RDI WavesMon 
program.  One file for each hour.  See the Matlab code snippet 
readAdcpDSpec.m.  Units are m^2/Hz/Deg.

subdirectory adcp1/Fspec
comment:
Non-directional ADCP spectra, one file each hour
Filename example: VSPspec.HIAD1.200508092100.UTC.asc 
This example is for 09 Aug 2005 at 2100 UTC.

Format:
Columnar ASCII spectra from ADCP Velocity, Surface, and Pressure (VSP).
Energy units are m^2/Hz/Deg, And frequency is in Hz.

subdirectory adcp1/Stats
comment:
wave and current statistics files by month (08=Aug, 09=Sep)

file:
HI010adc_cur_2005_mm_pfl.mat
comment:
(by month, mm)
Matlab format current profile data
        Variables:
           Uave1 = vertically averaged east current (mm/s)
           Vave1 = vertically averaged north current (mm/s)
           Ux1 = east current profile (cm/s)
           Vx1= north current profile (cm/s)
           depth = nominal depth of center of each bin
           stime = Matlab time format
ASCII text files of all parameters 
in ../data/1-data/SoutheastOahu_FieldData/adcp1/Stats 

file:
HI010adc_wmo_2005_mm_UTC.txt
comment:
(by month, mm)
Wave and current profiles, file by month, mm, columnar ASCII, one line per
wave collection, space delimited.  Format follows:
        Burst# YY MM DD HH mm ss cc Hs(m) Tp(s) Dp(deg) Depth(mm) Hmax(m)
        Tmean(s) bins depthlevel1Magnitude(m/s) depthlevel1Direction(deg)
        depthlevelNMagnitude(m/s) depthlevelNDirection(deg)
        Symbols:
        YY      Year
        MM      Month
        DD      Day
        HH      Hour
        mm      Minute
        ss      Second
        cc      1/100ths seconds
        Hs      Significant Wave Height = 4*sqrt(area under the power spectrum)
        Tp      Peak period             = Wave period associated with the 
                                          largest peak in the power spectrum
        Dp      Peak Direction          = peak direction at the peak period.

subdirectory adcp2/
See explanation for filenames, directory names, and formats in adcp1/

subdirectory advData/
Processed ADV files.  Files listed below are for ADV-1, there are similar 
files for ADV-2 and 3. The ADV wave data from ViewHydra was suspect and 
has been removed from the dataset use
adv_??.curWave.txt files (?? = y1, g2, and r3).

file:
README.advFormat
comment:
summary of formats for files on this directory

file:
adv_??config.txt
comment:
configuration files

file:
adv_??.curWave.txt
comment:
 Wave and curent stats with some QC data (where ?? = Gauge ID: y1, g2, or r3)
See README.advFormat for details

subdirectory advData/spec
comment:
Columnar ASCII spectra files, one per collection per gauge
(see README.advFormat).

subdirectory drogue/
comment:
GPS drogue (drifter) data, 10 Aug and 13 Sep.  

file: 
gpsNmmm.dat 
comment:
N: track number of the drogue
mmm: month (Aug or Sep); for example, gps1Aug.dat is for track-1 on 10 Aug.

columnar ASCII, with UTC time, 
latitude and longitude minutes (from Lat 21 degrees N and Lon 157 degrees W),
drogue speed (m/s) and direction going towards 
    (degrees positive clockwise from north).
      Entity_and_Attribute_Detail_Citation: None
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: NOAA/NESDIS/National Oceanographic Data Center
          Contact_Person: Data Access Group, User Services Team
        Contact_Address:
          Address_Type: mailing and physical
          Address: SSMC-3 Fourth Floor
          Address: 1315 East West Highway
          City: Silver Spring
          State_or_Province: MD
          Postal_Code: 20910-3282
          Country: USA
        Contact_Voice_Telephone: 301-713-3277
        Contact_Facsimile_Telephone: 301-713-3302
        Contact_Electronic_Mail_Address: services@nodc.noaa.gov
        Hours_of_Service: 8am-5pm, Monday through Friday
    Resource_Description: NODC Accession Number xxxxxxx
    Distribution_Liability: NOAA makes no warranty regarding these data,expressed or implied, nor does the fact of distribution constitute such a warranty.  NOAA, NESDIS, NODC and NCDDC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
    Standard_Order_Process:
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: MatLab
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: http://data.nodc.noaa.gov/accession/xxxxxxx
      Fees: Prices vary depending on data set, output medium and ordering mechanism. A standard handling charge, with additional costs for special handling, may be added to the basic cost of the data.
      Ordering_Instructions: Prepayment by check, money order or bank card is required. Orders may be placed via fax, email, regular mail, telephone or via the NNDC Online Store.
  Metadata_Reference_Information:
    Metadata_Date: 20090218
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Mr. Patrick C. Caldwell
          Contact_Organization: NOAA/NESDIS/NODC/NCDDC
        Contact_Position: Hawaii/US Pacific Liaison
        Contact_Address:
          Address_Type: mailing
          Address: 1000 Pope Road, MSB 316
          Address: Dept. of Oceanography
          Address: University of Hawaii at Manoa
          City: Honolulu
          State_or_Province: Hawaii
          Postal_Code: 96822
          Country: USA
        Contact_Voice_Telephone: (808)-956-4105
        Contact_Facsimile_Telephone: (808) 956-2352
        Contact_Electronic_Mail_Address: caldwell@hawaii.edu
        Hours_of_Service: 8 AM to 5 PM weekdays
        Contact_Instructions: check services@nodc.noaa.gov if not available
    Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998
