RV Investigator Voyage IN2017_C02 EM710 MKII Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2017_C02, ['Hogan Group Hydrographic Survey – Bass Strait'] which departed Hobart on the 4th May 2017 and came alongside Bell Bay following completion of the survey on the 14th May 2017.The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information [and watercolumn backscatter] around Bass Strait.The EM710 MKII provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 40 to 100 kHz.Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 465 files totalling 156 GB of raw data in this dataset.Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position.Tide corrections were applied to the processed data using AusTides 2017. Processed data has had outliers removed. Processed line data are not available in *.gsf and ascii format, but can be requested.Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

本记录描述了"探索者号"（RV Investigator）科考船IN2017_C02航次采集的多波束测深声呐数据，航次任务为"霍根群海底地形测量——巴斯海峡"。该航次于2017年5月4日从霍巴特启航，于2017年5月14日完成全部测量作业后靠泊贝尔贝港。本航次使用康斯伯格EM710 MKII型多波束测深声呐（Kongsberg EM710 MKII）采集巴斯海峡周边的海底地形测深数据、反向散射信息及水柱反向散射数据。该声呐的发射与接收角分辨率分别为0.5°与1°，标称工作频率范围为40至100 kHz。数据存储于澳大利亚联邦科学与工业研究组织（CSIRO），其中海底地形与反向散射原始数据采用*.all格式，水柱反向散射数据采用*.wcd格式。本数据集共计465个文件，总原始数据量达156 GB。数据采集阶段已应用声速剖面校正。*.all格式包含的地形数据已完成运动与位置校正。处理后的数据通过AusTides 2017实施了潮汐校正，并已剔除异常值。*.gsf与ASCII格式的处理测线数据暂不对外提供，但可申请获取。有关本数据集的更多信息（包括处理流程的详细说明）收录于GSM数据采集与处理报告中。额外数据产品可按需申请获取。