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OAS accession Detail for 8900181, meta_version: 3. Current meta_version is: 15
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| accessions_id: | 8900181 | archive |
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| Title: | Current direction, bathythermograph (xbt), CTD, and other data from moored current meter casts and other instruments in the Northwest Atlantic Ocean (limit-40 W) and North American Coastline-South as part of the North Carolina FRontal Eddy Dynamics Experiment (FRED) project, 07 May 1987 - 01 November 1987 (NODC Accession 8900181) |
| Abstract: | Current direction, bathythermograph (xbt), CTD, and other data were collected using moored current meter casts and other instruments in the Northwest Atlantic Ocean (limit-40 W) and North American Coastline-South from May 7, 1987 to November 1, 1987. Data were submitted by Science Applications, INC - Raleigh NC as part of the North Carolina FRontal Eddy Dynamics Experiment (FRED) project. Data has been been processed by NODC to the NODC standard F015- Current Meter Data, F156- Drifting Buoy, C116/C118- Bathythermograph XBT, and C125- UBT formats. Full format and format code descriptions are available at http://www.nodc.noaa.gov/General/NODC-datafmts.html. The F015 format is used for time series measurements of ocean currents. These data are obtained from current meter moorings and represent Eulerian method of current measurement, i.e., the meters are deployed at a fixed point and measure flow past a sensor. Position, bottom depth, sensor depth, and meter characteristics are reported for each station. The data record comprises values of east-west (u) and north-south (v) current vector components at specified date and time. Current direction is defined as the direction toward which the water is flowing with positive directions east and north and negative directions west and south. Data values may be subject to averaging or filtering and are typically reported at 10-15 minute time intervals. Water temperature, pressure, and conductivity or salinity may also be reported. A text record is available for optional comments. The F156 format is used for time series data on ocean circulation determined by the tracking of drifting buoys, drogues, or other instrumented devices as they are carried with the flow. Movement is reported as point-to-point geographic locations determined by shore-based, surface ship, aircraft, or satellite observations. Data from both ocean currents and ice movement can be reported in this format over time periods ranging from minutes to months. Directions and speeds between individual observations may be computed from these data and presented in graphic or summary listing form to provide information on circulation patterns and mass transport in offshore and near- shore regions. Platform name (for platform acquiring data or deploying device), drogue characteristics, start and end positions and times, and observation frequency (if constant time interval) are reported for each series of observation. Other surface meteorological or oceanographic parameters (e.g., water temperature and salinity, air temperature and pressure, wind, waves) and subsurface data (depth, pressure, temperature) may also be reported. Text records may be used to report general comments or to describe individual drogue observations. The C116 and C118 format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, the XBT data files contained temperature values at non-uniform depths. These depths were recorded at the minimum number of points (''''inflection points'''') required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. With special instruments, measurements can be obtained to 1830 m. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB. The UBT (C125) format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data records are comprised of pairs of temperature-depth values. Depths are selected by the originator - usually at standard horizons or some fixed interval. Standard XBTs can obtain profiles to depths of either 450 or 760 m. Special instruments permitted measurements to be obtained to 1830 m. |
| Date received: | 19890704 |
| Start date: | 19870507 |
| End date: | 19871101 |
| Seanames: | North American Coastline-South, Northwest Atlantic Ocean (limit-40 W) |
| West boundary: | -78 |
| East boundary: | -56.6 |
| North boundary: | 40.9 |
| South boundary: | 33 |
| Observation types: | continuous, current measurements, current measurements - surface currents, physical, profile, surface measurements, time series |
| Instrument types: | bathythermograph - AXBT, bathythermograph - BT, bathythermograph - XBT, buoy - drifting buoy, CTD, current meter, current meter - PCM, mooring, thermistor, tide gauge |
| Datatypes: | AIR PRESSURE, AIR TEMPERATURE, AMMONIA (NH3), BAROMETRIC PRESSURE, CARBON - DISSOLVED ORGANIC, CARBON - TOTAL ORGANIC, CHLOROPHYLL A, CONDUCTIVITY, CURRENT DIRECTION, CURRENT METER - EAST-WEST COMPONENT (U), CURRENT METER - NORTH-SOUTH COMPONENT (V), CURRENT SPEED, DEPTH - SENSOR, DISSOLVED OXYGEN, NITRATE, NITRITE, PCB, pH, PHAEOPIGMENTS, PHOSPHATE - INORGANIC, PHOSPHORUS - TOTAL, PRESSURE - BAROMETRIC, PRESSURE - WATER, SALINITY, SALINITY - SURFACE WATER, SEA STATE, silicate, SUSPENDED PARTICULATE MATTER, TEMPERATURE, TEMPERATURE - WATER, TIDE HEIGHT, TIDE STAGE, total alkalinity, TOTAL CARBON, turbidity, WATER DENSITY, water depth, WATER TEMPERATURE, WAVE HEIGHT, WAVE PERIOD, WIND DIRECTION, WIND SPEED |
| Submitter: | Ebbesmeyer, Dr. Curtis |
| Submitting institution: | Science Applications International Corporation - Raleigh, NC |
| Collecting institutions: | Science Applications International Corporation - Raleigh, NC |
| Contributing projects: | FRED |
| Platforms: | AIRCRAFT (3191), DRIFTING PLATFORM - DO NOT USE (32DB), FIXED PLATFORM OF UNITED STATES (317F), G. W. PIERCE (31PP) |
| Number of observations: | |
| Supplementary information: | The publication(s) listed below are related to the data collection and are available from the NOAA Central Library: North Carolina, Frontal Eddy Dynamics Experiment (FRED) ADCP Observations. [Raleigh, N.C. : The Corporation], 1989. (NOAA Library catalog link, last accessed on 3 February 2009 at North Carolina frontal eddy dynamics experiment (FRED)). Original Abstract: Note: Metadata for this accession were extracted from a legacy database maintained by the U.S. National Oceanographic Data Center (NODC). The design of the database did not exactly reflect the FGDC Content Standard for Digital Geospatial Metadata (CSDGM). Principal Investigator (PI) and organization contact information accurately represents all available information from the legacy database at the time that this description was created. However, proper attribution of a PI to a specific institution or the role (submitting or collecting) taken by an institution may not be correct due to inexact mapping between fields in the legacy database and the CSDGM. Due to this uncertainty, the contact information was initially recorded in the Supplemental Information element of the CSDGM description. To develop more accurate metadata, the NODC reviews metadata for all accessions on an ongoing basis. Points of contact for this data set include: Contact info: Agency: SCIENCE APPLICATIONS, INC. - RALEIGH NC PI: Ebbesmeyer, Dr. Curtis PI: 105 Address: address: 4900 WATERS EDGE DRIVE, SUITE 255 city: RALEIGH state: NC postal: 27606 country: UNITED STATES |
| Availability date: | 19890704 |
| Metadata version: | 3 |
| Keydate: | 2002-11-19 19:40:22+00 |
| Editdate: | 2009-02-03 15:59:06+00 |