RV Investigator Voyage IN2017_V03 EM710 MKII Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2017_V03, 'Sampling the abyss: latitudinal biodiversity patterns along the base of Australia’s eastern continental margin' which departed Bell Bay on the 15 May 2017 and returned to Brisbane on the 16 June 2017.

The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information at sampling sites along the East Coast of Australia, including several Commonwealth Marine Reserves.

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 at CSIRO. There are 53 files totalling 5.89 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.

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“调查者”号（RV Investigator）科考船IN2017_V03航次采集的多波束测深声呐（multibeam echosounder）数据，该航次主题为“探索深渊：澳大利亚东部大陆坡基部的纬度生物多样性模式”，于2017年5月15日从贝尔湾启航，2017年6月16日返回布里斯班。

本航次使用康斯伯格（Kongsberg）EM710 MKII多波束测深声呐，在澳大利亚东海岸的采样站位（包含多处联邦海洋保护区）采集了海底水深地形与反向散射数据。

该EM710 MKII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40 kHz至100 kHz。

本数据集的水深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（CSIRO），共计53个文件，总容量达5.89 GB。

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

本处理后数据未施加潮汐校正，但已剔除异常值。处理后的测线数据可通过*.gsf格式与ASCII格式获取。

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。额外数据产品可按需申请获取。