Current direction and wind wave spectra data from moored current meter casts in the Gulf of Mexico as part of the Brine Disposal project, 02 February 1977 - 31 January 1979 (NODC Accession 7900144)

Current direction, salinity, and wind wave spectra data were collected using moored current meter casts in the Gulf of Mexico from February 2, 1978 to January 31, 1979. Data were submitted by Texas A&M University as part of the Brine Disposal project. Data has been been processed by NODC to the NODC standard F005- Current Meter Data, F123- Fish Shellfish Resources, and F191- Wave Wind Spectra formats. Full format descriptions are available from NODC homepage at http://www.noaa.nodc.gov.

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 F123 format is used for data from field sampling of marine fish and shellfish. The data derive from analysis of midwater or bottom tow catches and provide information on population density and distribution. Cruise information, position, date, time, gear type, fishing distance and duration, and number of hauls are reported for each survey. Environmental data may include meteorological conditions, surface and bottom temperature and salinity, and current direction and speed. Bottom trawl or other gear dimensions and characteristics are also reported. Catch statistics (e.g., weight, volume, number of fish per unit volume) may be reported for both total haul and for individual species. Biological characteristics of selected specimens, predator/ prey information (from stomach contents analysis), and growth data may also be included. A text record is available for comments.

The F191 format is used to report meteorological data and ocean wave spectra data from NDBO. 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.

1978年2月2日至1979年1月31日，科研人员在墨西哥湾（Gulf of Mexico）通过锚定海流计布放作业（moored current meter casts）采集了海流方向、盐度与风浪谱数据。该数据集由德克萨斯农工大学（Texas A&M University）作为盐水处置项目（Brine Disposal project）的一部分提交。美国国家海洋数据中心（National Oceanographic Data Center，NODC）已将数据处理为其标准格式：F005-海流计数据、F123-鱼类与贝类资源数据及F191-风浪谱数据。完整格式说明可访问NODC官网http://www.noaa.nodc.gov获取。

F005格式用于记录通过锚定海流测量仪器获取的海流时间序列（time series）观测数据，主流设备为安德拉海流计（Aanderaa current meters，由安德拉仪器公司Aanderaa Instruments Inc.生产）。此类数据采用欧拉法（Eulerian method）进行海流测量：仪器布设于固定锚定点位，测量流经传感器的海流。每个测站（station）均记录站位位置、水深与传感器布设深度。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10-15分钟的时间间隔输出。此外还可记录其他环境参数，包括水温、盐度、电导率与透射率；风向与风速；以及优势浪向、浪高与浪周期。数据集附带文本字段用于填写可选备注信息。

F123格式用于海洋鱼类与贝类的野外采样数据。数据源自中层拖网或底拖网捕捞样品的分析结果，可提供种群密度与分布相关信息。每份调查均记录航次信息、站位位置、日期、时间、渔具类型、捕捞航程与作业时长，以及拖次（haul）次数。环境数据可包含气象条件、表层与底层水温及盐度、海流方向与流速。同时还会记录底拖网或其他渔具的尺寸与特性。可输出总捕捞量及单个物种的捕捞统计数据（如重量、体积、单位体积鱼类数量）。此外还可包含选定标本的生物学特征、捕食者/猎物信息（源自胃含物分析（stomach contents analysis））与生长数据。数据集附带文本记录用于填写备注。

F191格式用于报告来自国家数据浮标办公室（National Data Buoy Office，NDBO）的气象数据与海浪谱数据。该格式包含七种数据记录类型：1） 标识浮标（buoy）的站位、观测时长、采样速率与航向；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） 报告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9列用于填写文件类型（file type）与文件标识符（file identifier）。文件标识符由数据提交方分配，为每份数据提交提供唯一的提交方标识（originator id）。数据提交后，NODC会为该字段重新分配唯一的NODC标识（NODC identifier）。