RV Investigator Voyage IN2019_T02 EK60 Echosounder

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2019_T02, titled: "Deep seascapes of the Great Barrier Reef: Uncovering submarine canyons and landslides." The voyage took place between October 4 and October 14, 2019 departing from Brisbane (QLD) and arriving in Darwin (NT).

The Simrad EK60 split beam echosounders 18, 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data to a range of 1500 m, between Brisbane to Darwin transit.

All frequencies were logged sporadically for the extent of the voyage. The frequencies were set to passive for the periods of the voyage.

Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 728 files totalling 36 GB of raw data in this dataset.

The EK60, EM122 and SBP120 were synchronised using K-Sync as often as possible to minimise cross-system interference.

No p/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‘RV Investigator’号科考船航次IN2019_T02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《大堡礁深海景观：揭秘海底峡谷与滑坡》。本次航次于2019年10月4日至10月14日开展，从布里斯班（昆士兰州，QLD）出发，最终抵达达尔文（北领地，NT）。

本航次使用Simrad EK60型分裂波束回声测深仪，工作频率涵盖18、38、70、120、200及333 kHz，在布里斯班至达尔文的航行航段中采集了最大探测距离达1500米的声学后向散射数据。

本次航次全程中，所有频率均采用间断式记录，且航次期间所有测深仪均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CSIRO（澳大利亚联邦科学与工业研究组织，Commonwealth Scientific and Industrial Research Organisation），总计包含728个文件，原始数据总容量达36 GB。

EK60、EM122与SBP120设备尽可能通过K-Sync进行同步，以最大程度降低跨系统干扰。

本数据集尚未进行任何后期处理操作。

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，其他衍生数据产品可根据申请获取。