Vessel line-transect surveys of Arctic marine mammals in the Chuckchi Sea, Arctic Marine Biodiversity Observing Network (AMBON) research cruise on the vessel Norseman II from 2017-08-05 to - 2017-08-25

This dataset contains marine mammal observation data conducted during shipboard transects in the Chukchi Sea during the 5 August - 25 August 2017 Arctic Marine Biodiversity Observing Network (AMBON) research cruise. The dataset is two comma-separated values (csv) files exported from the marine bird and mammal observation software WinCruz from the entire survey. One data file contains the dates,times, latitude, longitude, species and best-high-low estimates of numbers for cetacean (whales) and pinniped (seals, seal lions, and walrus) sightings. The second data file contains the track of the ship (as geographic coordinates) and the Beaufort sea state at two minute intervals as a measurement of effort. This dataset was transformed from the native format into a table structure using Darwin Core Archive (DwC-A, occurrence core) term names as column names.

本数据集收录了2017年8月5日至8月25日期间，北极海洋生物多样性观测网络（Arctic Marine Biodiversity Observing Network, AMBON）科考航次在楚科奇海开展船载断面调查所获取的海洋哺乳动物观测数据。本数据集包含两份由全调查周期内的海洋鸟类与哺乳动物观测软件WinCruz导出的逗号分隔值（comma-separated values, CSV）文件。其中一份文件记录了鲸类（鲸目动物）与鳍足类动物（海豹、海狮及海象）的目击事件信息，包括日期、时间、纬度、经度、物种名称，以及种群数量的最佳估算值、最大值与最小值。另一份文件存储了科考船的航行轨迹（以地理坐标形式呈现），并以每2分钟为间隔记录的蒲福海况数据，以此作为调查作业量的衡量指标。本数据集已从原始格式转换为表格结构，其列名采用达尔文核心归档（Darwin Core Archive, DwC-A，发生核心）的术语名称。