RV Investigator Voyage IN2018_E02 EK60 Echosounder

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2018_E02, titled 'MNF Trials and Calibrations' which departed Hobart on the 3rd of September 2018 and returned to Hobart on the 9th of September 2018.The Simrad EK60 split beam echosounders [12], 18, 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data to a range of 4000 m, around south eastern Tasmania. EK60 calibration data was loaded into EK80 software for all settings to verify calibration values obtained from the EK60 real time calibration routine. Ek80 was also used to analyse the coverage of the four higher frequencies when just using the files for the 18kHz and the 38kHz.Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 107 files totalling 1.1 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.

本记录所描述的科学用分裂波束回声测深仪（split-beam echosounder）数据，采集自“调查者号”（RV Investigator）科考航次IN2018_E02，该航次主题为“MNF试验与校准”，于2018年9月3日从霍巴特起航，同年9月9日返回霍巴特港。本次航次使用Simrad EK60分裂波束回声测深仪[12]（工作频率覆盖18、38、70、120、200及333 kHz），在塔斯马尼亚东南部海域采集了最大探测距离达4000米的声学背散射数据。将EK60校准数据导入EK80软件，以验证通过EK60实时校准程序得到的校准参数。此外，EK80软件还被用于分析仅调用18kHz与38kHz数据文件时，其余四个较高频率通道的探测覆盖范围。本数据集的原始数据以*.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），共计107个文件，总原始数据量达1.1 GB，且尚未经过任何处理。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。