Current direction, wind wave spectra, phytoplankton, and other data from moored current meter casts in the Gulf of Mexico during the Brine Disposal project, 24 September 1977 - 31 May 1981 (NODC Accession 8100612)

Current direction, wind wave spectra, phytoplankton, temperature, salinity, and other data were collected using moored current meter casts in the Gulf of Mexico from the SW RESEARCHER and PEARL from September 24, 1977 to May 31, 1981. Data were submitted by National Data Buoy Center (NDBC) as part of the Brine Disposal project. Data has been been processed by NODC to the NODC standard F005- Current Meter Data, F028- Phytoplankton, and F191 Wind Wave Spectra formats. Full format and format code descriptions are available at http://www.nodc.noaa.gov/General/NODC-datafmts.html.

The F005 format is used for time series measurements of ocean currents obtained using moored current-measuring instruments, principally Aanderaa current meters (manufactured by Aanderaa Instruments Inc.). These data represent the Eulerian method of current measurement, i.e., the meters are deployed at a fixed mooring point and measure flow past the sensor. Position, water depth, and sensor depth are reported for each station. The data record comprises values of current direction and speed at specified date and time. Data values may be subject to
averaging or filtering and are typically reported at 10-15 minute time intervals. Other environmental parameters may also be reported. These include: water temperature, salinity, conductivity, and transmissivity; wind direction and speed; and dominant wave direction, height, and period. A text field is available for optional comments.

The F028 format is used for data from the sampling and analysis of marine phytoplankton. Information on phytoplankton abundance, distribution, and productivity derived from these data support studies of marine populations and ecosystems. Data reported may include: position, date, and time of sampling; bottom depth and sampling depths; volume of water filtered; and concentration of cells, carbon concentration, wet and dry weight, and counts for each species reported. Comments may be relayed in a text record.

The F191 format is used to report meteorological data and ocean wave spectra data from NDBC. The format contains seven data record types to: 1) Identify the buoy for position, duration, rate of sampling and heading. 2) Identify the meteorological parameters (temperature, pressure, weather, solar radiation, and surface waves). 3) Report time series frequency, density and resolution of waves. Each record is 120 characters in length, sorted by station and record type. The first nine columns for all records are to be used for file type (columns 1-3) and file identifier (column 4-9). The file identifier, to be assigned by the originator, is an unique originator id for each data submission. After submission, the NODC reassigns to this field an unique NODC identifier for internal use.

1977年9月24日至1981年5月31日期间，研究团队依托“SW RESEARCHER”号与“PEARL”号科考船，在墨西哥湾通过锚定海流计（moored current meter）布放作业，采集了海流方向、风浪谱、浮游植物、水温、盐度等多类数据。该数据集由美国国家数据浮标中心（National Data Buoy Center, NDBC）作为卤水处置项目（Brine Disposal project）的一部分提交。美国国家海洋数据中心（National Oceanographic Data Center, NODC）已将这批数据处理为符合其标准的三类格式：F005-海流计数据（Current Meter Data）、F028-浮游植物数据（Phytoplankton）以及F191-风浪谱数据（Wind Wave Spectra）。完整的格式与格式代码说明可访问 http://www.nodc.noaa.gov/General/NODC-datafmts.html 查询。

F005格式用于锚定海流测量仪器（主要为安德拉海流计（Aanderaa current meters），由Aanderaa Instruments Inc.制造）采集的海流时间序列数据。此类数据采用欧拉法（Eulerian method）进行海流测量，即仪器部署于固定锚点，测量流经传感器的水流。每个测站均记录站位位置、水深及传感器布设深度。数据记录包含指定日期与时间下的海流方向与流速数值。数据值可经过平均或滤波处理，通常以10至15分钟的时间间隔进行上报。此外还可上报其他环境参数，包括：水温、盐度、电导率、透射率；风向与风速；以及主波方向、波高与波周期。预留文本字段用于填写可选备注。

F028格式用于海洋浮游植物采样与分析相关数据。基于此类数据得到的浮游植物丰度、分布与生产力信息，可为海洋种群与生态系统研究提供支撑。上报的数据可包含：采样站位位置、日期与时间；底床水深与采样深度；过滤海水体积；以及各类物种的细胞浓度、碳浓度、湿重与干重、细胞计数结果。文本记录可用于填写备注信息。

F191格式用于上报来自NDBC的气象数据与海洋风浪谱数据。该格式包含七类数据记录，分别用于：1） 标识浮标的位置、作业时长、采样频率与航向；2） 标识气象参数（气温、气压、天气状况、太阳辐射与表层海浪）；3） 上报海浪的时间序列频率、密度与分辨率。每条记录长度为120个字符，按测站与记录类型排序。所有记录的前九列用于文件类型（第1-3列）与文件标识符（第4-9列）。文件标识符由数据提交方指定，为每次数据提交分配唯一的提交方标识。数据提交后，NODC将为该字段重新分配唯一的NODC内部使用标识符。