RV Investigator Voyage IN2022_V03 EK60/EK80 Echosounder

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2022_V03, "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania", which departed Hobart on the 4th May 2022 and returned to Hobart on the 15th May 2022 (AEST). The Simrad EK60 split beam GPT for 18kHz and Simrad EK80 split beam WBTs for 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data to a range of 1500 m during transits. All frequencies were logged continuously for the extent of the voyage, except for periods of mooring recovery/deployment when all acoustic systems were mandated to be suspended to communicate with the mooring beacons. Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 436 files totalling 41.5 GB of raw data in this dataset.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‘调查者’号科考船（RV Investigator）航次IN2022_V03期间采集的科学级分裂波束回声测深仪（split-beam echosounder）数据，该航次主题为"SOTS：塔斯马尼亚西南海域气候与碳循环研究用南极海洋时间序列自动锚系系统"，航次于2022年5月4日从霍巴特起航，2022年5月15日（澳大利亚东部标准时间，AEST）返回霍巴特。本航次航渡阶段采用18kHz频段的Simrad EK60型分裂波束GPT换能器，以及38kHz、70kHz、120kHz、200kHz与333kHz频段的Simrad EK80型分裂波束WBT换能器，采集探测距离可达1500米的声学背散射数据（acoustic backscatter data）。本航次全程连续记录所有频段的数据，仅在锚系回收/布放阶段除外——此阶段所有声学系统需按规定暂停工作，以保障与锚系信标的通信正常。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（Commonwealth Scientific and Industrial Research Organisation, CSIRO）。本数据集共计436个文件，原始数据总容量达41.5吉字节（GB）。本数据集的补充信息详见GSM数据采集与处理报告。其他数据产品可按需申请获取。