RV Investigator Voyage IN2022_T01 EK60/EK80 Echosounder

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2022_T01, titled "Transit: Cairns to Darwin 2022." The voyage took place between September 11, 2022 and September 17, 2022 (AEST), departing from Cairns and returning to Darwin.The Simrad EK60 split beam echosounders for 18 kHz and Simrad EK80 split beam echosounders for 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data to a range of 250 m (shallow water) or 1500 m (deep water) between Cairns and Darwin. All frequencies were logged continuously for the extent of the voyage. The 70 and 120 kHz frequencies were set to passive for the periods of the voyage due to interference with the EM710.Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 496 files totalling 26.3 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.

本记录详述了‘调查者’号科考船（RV Investigator）IN2022_T01航次所采集的科学级分离波束回声测深仪（split-beam echosounder）数据，该航次主题为「过境航行：2022年凯恩斯至达尔文」。本次航次执行时段为2022年9月11日至9月17日（澳大利亚东部标准时间），从凯恩斯启航，最终返回达尔文港。本次航次使用适配18 kHz频率的Simrad EK60分离波束回声测深仪，以及适配38、70、120、200与333 kHz频率的Simrad EK80分离波束回声测深仪，在凯恩斯至达尔文的海域范围内采集声学背散射数据，探测量程覆盖浅水区250米与深水区1500米。本次航次全程对所有工作频率的设备进行连续数据记录。由于与EM710设备存在信号干扰，本次航次期间70 kHz与120 kHz频率的设备均设置为被动工作模式。本数据集的原始数据以*.raw、*.bot与*.idx格式存储于澳大利亚联邦科学与工业研究组织（CSIRO），共计包含496个文件，总数据量达26.3吉字节（GB）。有关本数据集的更多详细信息，请参阅GSM数据采集与处理报告。如需获取额外衍生数据产品，可另行申请。