RV Investigator Voyage IN2018_V06 EM710 Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2018_V06, which departed Hobart on the 22-Nov-2018 and returned to Hobart on the 19-Dec-2018.

The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information between/around Huon, Tasman Fracture Marine Parks and the St Helens seamount, Tasmania.

The EM710 provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 70 to 100 kHz.

Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 80 files totaling 9.7 GB of raw data in this dataset.

Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format is corrected for motion and position.

Tide corrections [were/were not] applied to the processed data. Processed data 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.

本数据集记录了“调查者号（RV Investigator）”科考船航次IN2018_V06采集的多波束测深声呐数据，该航次于2018年11月22日从霍巴特起航，于2018年12月19日返回霍巴特。

本次航次使用康士伯EM710多波束测深声呐（Kongsberg EM710 multibeam echosounder），采集了塔斯马尼亚州休恩（Huon）、塔斯曼断裂带海洋公园（Tasman Fracture Marine Parks）周边及其间海域的海底测深与反向散射信息。

该EM710声呐的发射与接收角分辨率分别为0.5°×1°，标称工作频率范围为70 kHz至100 kHz。

本数据集内的海底测深与反向散射原始数据以*.all格式存储，水体柱反向散射数据则以*.wcd格式存储于澳大利亚联邦科学与工业研究组织（CSIRO）。本数据集共计80个原始数据文件，总容量达9.7 GB。

数据采集阶段已针对该数据集应用声速剖面校正。*.all格式存储的测深数据已完成运动与位置校正。

已对处理后的数据施加潮汐校正（原文此处标注为「Tide corrections [were/were not] applied to the processed data.」，存在不确定性）。处理后的数据已剔除异常值。处理后的测线数据以*.gsf格式与ASCII格式提供，处理后的测深与反向散射栅格数据则以GeoTIFF（Geospatial Tagged Image File Format）格式提供。

本数据集的更多相关信息（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。其他数据产品可根据申请获取。