Current direction, chemical, zooplankton, phytoplankton, and other data from moored current meter casts and other instruments in the Gulf of Mexico during the Brine Disposal project, 1982-02-19 to 1983-03-23 (NODC Accession 8300099)

Current direction, chemical, phytoplankton, zooplankton, and other data were collected using moored current meter casts and other instruments in the Gulf of Mexico from February 19, 1982 to March 23, 1983. 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, F004- Water Physics and Chemistry, F028- Phytoplankton, F123 Fish Shellfish Resource, and F124- Zooplankton formats. Full format and format code descriptions are available at http://www.nodc.noaa.gov/General/NODC-datafmts.html.

The F004 format is used for data from measurements and analyses of physical and chemical characteristics of the water column. Among chemical parameters that may be recorded are salinity, PH, and concentration of oxygen, ammonia, nitrate, phosphate, chlorophyll, and suspended solids. Physical parameters that may be recorded include temperature, density (sigma-t), transmissivity, and current velocity (east-west and north-south components). Cruise and station information, including environmental conditions of the study site at the time of observations, is also included.

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 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 F124 format is used for data from sampling and analysis of marine zooplankton. Information on zooplankton abundance, distribution, and productivity derived from these data support studies of marine populations and ecosystems. Data reported may include: cruise information, position, date, and time of sampling; bottom depth, sampling depths, temperature, and salinity; gear type, volume of water filtered, total dry and wet weight, and other data for total haul; and data for subsamples by species. Data on zooplankton catch by species may include subsample size, zooplankton concentration, life history code, and numbers of adults, juveniles, eggs, and larvae. Estimated density of holoplankton and meroplankton and data on ichthyoplankton may also be reported. A text record is available for comments. Note: there are two options for reporting subsample counts of individuals at different life history stages. If life history codes are used, only number of adults should be reported on that record. Additional separate records should then be used to report number of juveniles and so on. Alternatively, life history codes may not be used and number of adults, juveniles, and so entered in the proper fields of a single record.

The F132 format contains data from field sampling or surveys of bottom dwelling marine organisms. The data provide information on species abundance, distribution, and biomass; they may have been collected by point sampling (grab or core), by tow (dredge, trawl or net), by photographic surveys, or by other methods. Cruise information such as vessel, start and end dates, investigator, and institution/agency; station numbers, positions and times; and equipment and methods are reported for each survey. Environmental data reported at each sampling site may include meteorological and sea surface conditions; surface and bottom temperature, salinity and dissolved oxygen; and sediment characteristics. Number of individual organisms and total weight of organisms is reported for each species. A text record is available for comments.

1982年2月19日至1983年3月23日，研究团队在墨西哥湾（Gulf of Mexico）通过锚定海流计投放及其他仪器，采集了海流、化学、浮游植物、浮游动物及其他相关数据。该数据集由得克萨斯农工大学（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）已将数据处理为符合NODC标准的F005-海流计数据（Current Meter Data）、F004-水物理与化学数据（Water Physics and Chemistry）、F028-浮游植物数据（Phytoplankton）、F123-鱼类与贝类资源数据（Fish Shellfish Resource）以及F124-浮游动物数据（Zooplankton）格式。完整格式及格式代码说明可访问http://www.nodc.noaa.gov/General/NODC-datafmts.html获取。

F004格式用于水柱物理与化学特性的测量与分析数据。可记录的化学参数包括盐度、pH值、氧、氨、硝酸盐、磷酸盐、叶绿素及悬浮固体的浓度；可记录的物理参数包括温度、密度（σ-t）、透射率以及海流速度（东西向与南北向分量）。此外，数据集还包含航次与测站信息，包括观测时研究区域的环境条件。

F005格式用于通过锚定海流测量仪器（主要为Aanderaa海流计，由Aanderaa Instruments Inc.制造）获取的海流时间序列测量数据。此类数据采用欧拉海流测量方法，即仪器部署于固定锚泊点，测量流经传感器的海流。每个测站均报告站位位置、水深及传感器埋深。数据记录包含指定日期与时间下的海流方向与速度值，数据通常经过平均或滤波处理，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、电导率及透射率；风向与风速；以及主波方向、波高与波周期。数据集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数据。通过此类数据获取的浮游植物丰度、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。上报数据可包含：采样站位位置、日期与时间；底栖水深与采样水深；过滤水样体积；以及各物种的细胞浓度、碳浓度、湿重与干重、个体计数等信息。数据集预留文本记录用于填写备注。

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，可提供种群密度与分布信息。每个调查均需报告航次信息、站位位置、日期与时间、渔具类型、捕捞距离与时长以及拖网次数。环境数据可包括气象条件、表层与底层温盐、海流方向与速度。此外还需报告底拖网或其他渔具的尺寸与特性。可上报捕捞统计数据（例如单位体积的重量、体积、鱼类数量），涵盖总捕捞量与各物种单独统计结果。还可包含选定标本的生物学特性、捕食者/猎物信息（源自胃容物分析）以及生长数据。数据集预留文本记录用于填写备注。

F124格式用于海洋浮游动物采样与分析数据。通过此类数据获取的浮游动物丰度、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。上报数据可包含：航次信息、采样站位位置、日期与时间；底栖水深、采样水深、温度与盐度；渔具类型、过滤水样体积、总湿重与干重以及总捕捞量的其他相关数据；以及各物种子样本数据。按物种划分的浮游动物捕捞数据可包含子样本规模、浮游动物浓度、生活史代码、成体、幼体、卵及幼虫的数量。还可上报终生浮游生物（holoplankton）与阶段性浮游生物（meroplankton）的估算密度，以及鱼卵与仔鱼相关数据。数据集预留文本字段用于填写备注。注意：针对不同生活史阶段的个体子样本计数有两种上报方式：若使用生活史代码，则仅需在该记录中上报成体数量，后续需通过单独的额外记录上报幼体等其他阶段的数量；若不使用生活史代码，则可将成体、幼体等各阶段数量直接填入单条记录的对应字段中。

F132格式包含底栖海洋生物的野外采样或调查数据。此类数据可提供物种丰度、分布与生物量信息，采集方式可包括点状采样（抓斗或岩心采样）、拖采器（dredge）、拖网（trawl）或网具、摄影调查或其他方法。每个调查均需报告航次信息，包括船舶、起止日期、调查人员及所属机构；测站编号、站位位置与时间；以及调查使用的设备与方法。各采样点上报的环境数据可包括气象与海表状况、表层与底层温盐及溶解氧；以及沉积物特性。需上报各物种的个体数量与总生物量。数据集预留文本记录用于填写备注。