Fish survey, fishing duration, and other data from net trawls from the MILLER FREEMAN and other platforms as part of Outer Continental Shelf Environmental Assessment Program (OCSEAP) from 03 May 1975 to 04 August 1976 (NODC Accession 7800029)

Fish survey, fishing duration, and other data were collected from net trawls from the MILLER FREEMAN and other platforms from 03 May 1975 to 04 August 1976. Data were collected by the University of Alaska/Institute of Marine Science (UAK/IMS) as part of Outer Continental Shelf Environmental Assessment Program (OCSEAP). Data were processed by NODC to the NODC F123 Fish/Shellfish Surveys format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/f123.html. An analog file for this accession is available from NODC user services.

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 comment.

本数据集采集了1975年5月3日至1976年8月4日期间，由MILLER FREEMAN号科考船及其他作业平台开展的拖网采样所获的鱼类调查、作业时长及其他相关数据。数据由阿拉斯加大学/海洋科学研究所（University of Alaska/Institute of Marine Science, UAK/IMS）作为外大陆架环境评估计划（Outer Continental Shelf Environmental Assessment Program, OCSEAP）的一部分完成采集。美国国家海洋数据中心（National Oceanographic Data Center, NODC）已将该数据整理为NODC F123鱼类/贝类调查数据集格式，完整格式说明可通过NODC官方网站https://www.nodc.noaa.gov/General/NODC-Archive/f123.html查阅。本数据集的模拟文件可通过NODC用户服务渠道获取。

F123格式专用于海洋鱼类与贝类的野外采样数据。此类数据源自中层拖网或底拖网渔获物的分析结果，可提供种群密度与分布相关信息。每份调查数据均包含航次信息、作业位置、日期、时间、作业渔具类型、拖网航程与时长以及拖网次数。环境数据可涵盖气象条件、表层与底层水温及盐度、海流方向与流速；底拖网或其他作业渔具的尺寸与参数信息亦会被记录。渔获统计数据（如总重量、体积、单位体积鱼类数量）可分别针对单次拖网总渔获量及单物种进行统计。选定样本的生物学特征、基于胃容物分析得到的捕食者/猎物信息以及生长数据亦可纳入数据集。附带有可供批注的文本记录。