Marine animal sighting and census data from aircraft and other platforms as part of the Outer Continental Shelf Environmental Assessment Program (OCSEAP) from 22 November 1977 to 21 August 1979 (NODC Accession 8000047)

Marine animal sighting and census data were collected from aircraft and other platforms from 22 November 1977 to 21 August 1979. Data were collected by the Alaska State Department of Fish and Game as part of Outer Continental Shelf Environmental Assessment Program (OCSEAP). Data were processed by NODC to the NODC standard F127 Marine Animal and Census format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/f127.html.

The F127 format is used for data from field observations of marine animals. Data may be reported either for individual, random sightings or for sightings made as part of systematic ship or aircraft surveys along specified tracks. These data provide information on animal population densities and distributions, activities, migratory routes and breeding locales. Cruise or survey information, start and end positions, start and end times, and platform speed, direction, and altitude are reported for each observation or series of observations. Position, date and time are reported for each sighting location, along with a code indicating presence or absence of animals and, if present, their distance to the observer, shoreline, and ice edge and heading direction. For each sighting location, animal sighting data are reported by species for all observed species. Species identification, total number of individuals, and counts by age group (adults, subadults, juveniles, unknown) may be reported in summary for all animals sighted or by subgroups distinguished by sex, behavior, markings, or other characteristics. A text record is available for comments.

1977年11月22日至1979年8月21日期间，科研团队通过航空器及其他观测平台采集了海洋动物目击与普查数据。此项数据由阿拉斯加州鱼类与狩猎部采集，作为外大陆架环境评估计划（Outer Continental Shelf Environmental Assessment Program, OCSEAP）的组成部分。美国国家海洋数据中心（National Oceanographic Data Center, NODC）已将该数据规范化处理为NODC标准F127海洋动物与普查格式（F127 Marine Animal and Census format）。完整格式说明可通过NODC官网https://www.nodc.noaa.gov/General/NODC-Archive/f127.html查阅。

F127格式专为海洋动物野外观测数据设计。数据记录可分为两类：一是单次随机目击记录，二是沿指定航线开展的系统性船舶或航空器调查所获取的目击数据。此类数据可提供海洋动物的种群密度、分布范围、活动行为、洄游路径及繁殖栖息地等关键信息。针对单次观测或连续观测序列，数据集将记录航次/调查信息、起止位置、起止时间，以及观测平台的航速、航向与高度。每条目击记录将标注观测位置的经纬度、观测日期与时间，同时附带用于标记动物是否存在的编码；若观测到动物，则同步记录其与观测者、海岸线及冰缘的距离，以及动物的行进方向。针对每个目击位置，数据集将按物种分类记录所有观测到的海洋动物信息。数据集可报告各物种的识别信息、总个体数量，以及按年龄组（成体、亚成体、幼体、未知）划分的种群统计数据；既可以针对所有目击动物进行汇总统计，也可按性别、行为、体表特征或其他属性划分的亚组进行细分统计。数据集预留文本记录字段，用于添加补充注释。