Multibeam acoustic-backscatter data collected offshore of south-central California in support of the Bureau of Ocean Energy Management Cal DIG I offshore alternative energy project

Multibeam acoustic-backscatter data were collected offshore of Morro Bay, California, from 2016 to 2019. The data were collected during five separate multi-agency surveys for the U.S. Geological Survey (USGS)/Bureau of Ocean Energy Management (BOEM) California Deepwater Investigations and Groundtruthing I (Cal DIG I) project, under a collaboration with the National Oceanic and Atmospheric Administration (NOAA), using Simrad 700 series hull-mounted multibeam echosounders. Data in 2017 and 2018 were acquired by the NOAA Hydrographic Vessel Rainier (surveys H1309, H13151, and H13152). The 2018 data acquired by the Ranier were collected during USGS field activity 2018-641-FA. Additional data were collected in 2019 by the NOAA Hydrographic Survey Vessel Fairweather (survey W00479). Data from the Scripps Institution of Oceanography R/V Sally Ride collected in 2016 (survey SR1604) were used to fill in a small gap in the NOAA data. The acoustic-backscatter data from the five surveys were combined into a single raster and are provided as a 10-meter resolution GeoTIFF.

本数据集的多波束声散射数据采集于2016年至2019年间，采集地点为美国加利福尼亚州莫罗湾近岸海域。数据源自五项跨机构联合调查，服务于美国地质调查局（U.S. Geological Survey, USGS）/海洋能源管理局（Bureau of Ocean Energy Management, BOEM）的“加利福尼亚深水调查与地面验证I（California Deepwater Investigations and Groundtruthing I, Cal DIG I）”项目，本次调查与美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）合作开展，采集设备为Simrad 700系列船舷安装式多波束测深仪。2017年与2018年的数据由美国国家海洋和大气管理局水文船“雷尼尔号（NOAA Hydrographic Vessel Rainier）”采集，对应调查任务编号为H1309、H13151及H13152。2018年由“雷尼尔号”采集的数据集对应美国地质调查局野外作业编号2018-641-FA。2019年的补充数据由美国国家海洋和大气管理局水文调查船“费尔韦瑟号（NOAA Hydrographic Survey Vessel Fairweather）”采集，对应调查任务编号W00479。2016年由斯克里普斯海洋研究所（Scripps Institution of Oceanography）科考船R/V Sally Ride采集的数据（调查任务编号SR1604），用于填补美国国家海洋和大气管理局数据集的一处小型空白区域。本次五项调查获取的声散射数据已合并为单幅栅格数据，并以10米分辨率的GeoTIFF格式提供。