Physical, chemical, and other data from the EASTWARD and other platforms as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 01 October 1972 to 07 December 1974 (NODC Accession 7700536)

Physical, chemical, and other data were collected from the EASTWARD and other platforms from 01 October 1972 to 07 December 1974. Data were collected by the National Marine Fisheries Service (NMFS) and other institutions as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project. Data were processed by NODC to the NODC standard Water Physics and Chemistry (F004) format. Full format description is available from NODC at
www.nodc.noaa.gov/General/NODC-Archive/f004.html.

The water physics and chemistry 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.

1972年10月1日至1974年12月7日，研究团队依托EASTWARD号平台及其他观测站点采集物理、化学及相关数据。本次数据采集由美国国家海洋渔业服务处（National Marine Fisheries Service, NMFS）与其他机构联合开展，作为海洋资源监测、评估与预测（Marine Resources Monitoring, Assessment and Prediction, MARMAP）项目的组成部分。数据经美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理，采用NODC标准水体物理化学（F004）格式进行归档。完整格式说明可通过NODC官方网站www.nodc.noaa.gov/General/NODC-Archive/f004.html查阅。

该水体物理化学格式用于存储水体柱体物理与化学特征的测量及分析数据。可记录的化学参数包括盐度、pH值、溶解氧浓度、氨浓度、硝酸盐浓度、磷酸盐浓度、叶绿素浓度以及悬浮固体含量。可记录的物理参数涵盖水温、密度（σ-t）、透光率以及海流流速（东西向与南北向分量）。数据集同时包含航次与站点信息，包括观测时刻研究区域的环境条件。