Data Report: 2018 Aleutian Islands bottom trawl survey

The ninth biennial groundfish assessment survey of the Aleutian Islands region was conducted during the summer of 2018 by the Alaska Fisheries Science Center’s (AFSC) Resource Assessment and Conservation Engineering Division’s Groundfish Assessment Program (RACE-GAP). This effort constitutes the fifteenth in the full series dating from 1980. The survey area covered the continental shelf and upper continental slope to 500 m in the Aleutian Archipelago from Islands of Four Mountains (170° W long.) to Stalemate Bank (170° E long.), including Petrel Bank and Petrel Spur (180° long.), and the northern side of the Aleutian Islands between Unimak Pass (165° W long.) and the Islands of Four Mountains. The survey was conducted aboard two chartered trawlers, the FV Ocean Explorer and FV Sea Storm. Samples were collected successfully at 420 survey stations using standard RACE Division Poly Nor’Eastern high-opening bottom trawl nets with rubber bobbin roller gear. 2020 NMFS (National Marine Fisheries Service) AFSC (Alaska Fisheries Science Center) Submitted https://doi.org/10.25923/qe5v-fz70 Public Domain 1862

2018年夏季，阿拉斯加渔业科学中心（Alaska Fisheries Science Center，AFSC）资源评估与保护工程分部下属的底层鱼类评估项目（Groundfish Assessment Program，RACE-GAP），开展了阿留申群岛海域第九届两年一度的底层鱼类资源评估调查。本次作业是自1980年启动的完整系列调查中的第15次任务。
调查海域覆盖阿留申群岛的大陆架及水深500米以浅的大陆坡上部区域，范围西起四山群岛（经度170°W）至僵局浅滩（Stalemate Bank，经度170°E），涵盖海燕浅滩（Petrel Bank）与海燕海脊（Petrel Spur，经度180°），同时包含乌尼马克水道（Unimak Pass，经度165°W）至四山群岛之间的阿留申群岛北侧海域。
本次调查依托两艘租赁拖网渔船“FV Ocean Explorer”与“FV Sea Storm”实施。调查采用RACE分部标准Poly Nor’Eastern型高开口式底拖网（搭配橡胶滚筒沉子装置），在420个调查站位成功采集到样本。
本数据集由美国国家海洋渔业局（National Marine Fisheries Service，NMFS）、阿拉斯加渔业科学中心（AFSC）于2020年提交，DOI标识为https://doi.org/10.25923/qe5v-fz70，属于公有领域资源，编号1862。