RV Investigator Voyage IN2020_V08 EK80 Echosounder

This record describes scientific split-beam echosounder data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2020_V08, titled "SOLACE - Southern Ocean Large Areal Carbon Export: quantifying carbon sequestration in subpolar and polar waters." The voyage took place between December 5, 2020 and January 16, 2021 departing from Hobart (TAS) and arriving in Hobart (TAS).The Simrad EK80 split beam echosounders 18, 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data to a range of 1500 m, at the three study locations and transit to and from Hobart . All frequencies were logged continuously for the extent of the voyage. Logging of "complex samples" occurred daily for one hour.Data are stored in *.raw (6273 files 625 GB) and *.idx (6273 files 63.0 MB) formats at CSIRO.No processing has been conducted on this data.Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.本数据集记录了采集自澳大利亚海洋国家设施（Marine National Facility, MNF）“调查者号”（RV Investigator）科考船IN2020_V08航次的科学级分裂波束回声测深仪（split-beam echosounder）数据，航次主题为“SOLACE——南大洋大面积碳输出：量化亚极地与极地海域碳封存过程”。该航次执行时间为2020年12月5日至2021年1月16日，往返均以塔斯马尼亚州霍巴特为始发港与终到港。本航次搭载Simrad EK80型分裂波束回声测深仪，工作频率涵盖18、38、70、120、200及333 kHz，可采集最大探测深度1500米的声学背散射数据，数据覆盖3个研究站位以及往返霍巴特的全部航线。全航次期间，所有频率的声学数据均被连续记录；此外，每日会开展时长1小时的复数据样本（complex samples）采集记录。本数据集以*.raw（共6273个文件，总容量625 GB）与*.idx（共6273个文件，总容量63.0 MB）两种格式存储于澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO），且未经过任何后期处理。有关本数据集的更多详细信息可查阅GSM数据采集与处理报告，额外的数据产品可根据申请获取。