Arctic IES UTL Directional Acoustic Fish Tracker (DAFT) Platform Data, C11 Mooring Site, Chukchi Sea, August 2017 to August 2019

These data are part of the Arctic IES component of the Arctic Integrated Ecosystem Research Program (IERP), sponsored by the North Pacific Research Board (NPRB), Collaborative Alaskan Arctic Studies Program (formerly the North Slope Borough/Shell Baseline Studies Program), Bureau of Ocean Energy Management (BOEM), and the Office of Naval Research Marine Mammals and Biology Program. To investigate the residence time and seasonal movement of midwater fishes in the U.S. Continental Region of the NE Chukchi Sea, upward-facing echosounder moorings were deployed from August 2017 - August 2019. Acoustic backscatter of the water column was collected for approximately 3 minutes, every 2 hours. This dataset contains a calibrated filtered 70 kHz, 38 kHz, and 200 kHz datasets. Data is integrated into 1-meter water column depth bins and single wake-up (2 hour) time segments, and presented here in CSV format with time identifiers. Due to instrument failure, the 38 kHz channel data is not available for the 2018-2019 deployment period. Supplemental datasets from a) Seabird SBE37 conductivity and temperature recorder and b) underwater logging compass mounted on the platform are included. An engineering diagram of the platform is included.

本数据集隶属于北极综合生态研究计划（Arctic Integrated Ecosystem Research Program, IERP）的北极IES组分，该项目由北太平洋研究委员会（North Pacific Research Board, NPRB）、阿拉斯加北极合作研究计划（前身为北坡自治市/壳牌基线研究计划）、海洋能源管理局（Bureau of Ocean Energy Management, BOEM）以及海军研究办公室海洋哺乳动物与生物学项目资助。为探究美国东北楚科奇海大陆海域中层鱼类的停留时长与季节移动规律，研究团队于2017年8月至2019年8月部署了朝上式回声测深锚系装置。每2小时采集一次水柱声学背散射数据，单次采集时长约3分钟。本数据集包含经过校准与滤波的70 kHz、38 kHz及200 kHz声学数据集，数据已被整合为1米水深分层与2小时单次唤醒时段的分段格式，以CSV格式存储并附带时间标识。因仪器故障，2018-2019年部署阶段的38 kHz信道数据无法获取。补充数据集包含两部分：a) 海鸟SBE37型电导率温度记录仪数据，b) 搭载于观测平台的水下日志罗盘数据。此外还包含该观测平台的工程示意图。