RV Investigator Voyage IN2022_V06 EK60/EK80 Echosounder

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2022_V06, titled "Integrated Marine Observing System: monitoring of East Australian Current property transports at 27 degrees South." The voyage took place between July 14 and July 30, 2022 (AEST), departing from Brisbane and returning to Brisbane. The Simrad EK60 split beam echosounders for18kHz 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 1,500 m, around Brisbane 27 degrees South.All frequencies were logged continuously for the extent of the voyage, except when asked to switch off for mooring activities. Occasionally, the 70kHz & 120kHz frequencies were set to passive for the periods of shallow mapping with EM710, and ADCP interference requests from the chief scientist, but all other frequencies wer set to active during the voyage.Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 877 files totalling 40 GB of raw data in this dataset.No post 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'RV Investigator'号科考船IN2022_V06航次采集的科学分裂波束回声测深仪（split-beam echosounder）数据，项目标题为《综合海洋观测系统：南纬27度东澳洋流属性输运监测》。该航次于2022年7月14日至7月30日（澳大利亚东部标准时间）执行，从布里斯班启航并返回布里斯班。本次采集使用适配18kHz频段的Simrad EK60分裂波束回声测深仪，以及适配38、70、120、200与333kHz频段的Simrad EK80分裂波束回声测深仪，获取了最大探测距离达1500米的声学反向散射数据，采集区域位于南纬27度布里斯班周边海域。航次全程对所有频段进行连续记录，仅在因锚泊作业要求关停设备时中断；其中70kHz与120kHz频段在使用EM710开展浅海测绘以及应首席科学家提出的规避ADCP干扰需求时被设置为被动模式，其余所有频段在航次全程均保持主动采集状态。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），总计包含877个文件，原始数据总容量达40GB，未经过任何后处理操作。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。