RV Investigator Voyage IN2019_V02 EK60 Echosounder

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2019_V02, titled 'SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania; Subantarctic Biogeochemistry of Carbon and Iron, Southern Ocean Time Series site', which departed Hobart on the 14 March 2019 and returned to Hobart on the 5 April 2019. The Simrad EK60 split beam echosounders 18, 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data to a 1500 m range, around the southwest of Tasmania.All frequencies were logged continuously for the extent of the voyage. The frequencies were set to passive for periods of the voyage.Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 2,748 files totalling 91.5 GB of raw data in this dataset.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.

本记录描述了搭载于“调查者号”科考船（RV Investigator）航次IN2019_V02所采集的科学级分裂波束回声测深仪（split-beam echosounder）数据，该航次的项目标题为“SOTS：塔斯马尼亚岛西南部用于气候与碳循环研究的南大洋时间序列自动锚系系统；南大洋时间序列站点的碳与铁亚南极生物地球化学研究”。该航次于2019年3月14日从霍巴特启航，2019年4月5日返回霍巴特港。本次航次在塔斯马尼亚岛西南部海域使用Simrad EK60型分裂波束回声测深仪（工作频率分别为18、38、70、120、200及333 kHz）采集了量程达1500米的声学背散射数据，所有频率通道在整个航次期间均持续记录，部分航段中部分频率被设置为被动工作模式。本数据集的数据以*.raw、*.bot及*.idx格式存储于澳大利亚联邦科学与工业研究组织（CSIRO），共包含2748个数据文件，原始数据总容量达91.5 GB，且尚未经过任何处理。有关本数据集的更多详细信息可参阅GSM数据采集与处理报告，额外的数据产品可根据申请提供。