RV Investigator Voyage IN2015_C02 EM710 MKII Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_C02, Great Australian Bight Research Program: GAB deep-water pelagic and benthic ecosystem study which departed which departed Port Lincoln on the 30 November 2015 and returned to Fremantle on the 22 December 2015.

The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information around the Great Australian Bight.

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 at CSIRO. There are 155 files totaling 11.4 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 not applied to the processed data. Processed data has had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry and backscatter grids in geotiff format.

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.

本记录所描述的多波束测深仪（multibeam echosounder）数据采集自“探索者号”（RV Investigator）科考航次IN2015_C02，该航次隶属于大澳大利亚湾研究计划：GAB深水浮游与底栖生态系统研究，于2015年11月30日从林肯港启航，2015年12月22日返回弗里曼特尔。

本次数据采集使用了康士伯（Kongsberg）EM710 MKII型多波束测深仪，用于获取大澳大利亚湾周边的海底地形与反向散射信息。

EM710 MKII型测深仪的发射与接收角分辨率分别为0.5°×1°，其标称工作频率范围为40 kHz至100 kHz。

本数据集的水深地形与反向散射原始数据以*.all格式存储于澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO），共计155个文件，总数据量达11.4 GB。

在数据采集阶段，已针对该数据应用声速剖面（sound velocity profile）校正；*.all格式存储的水深地形数据已完成运动与位置校正。

本数据集的处理后数据未进行潮汐校正，但已剔除异常值；处理后的测线数据以*.gsf与ASCII格式提供，处理后的水深地形与反向散射网格数据则采用GeoTIFF格式存储。

有关本数据集的更多信息（包括处理流程的详细说明）均收录于GSM数据采集与处理报告中；额外的数据产品可根据申请提供。