RV Investigator Voyage IN2020_V01 EM710 MKII Multibeam Echosounder Data (unprocessed)

This record describes multibeam echosounder data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2020_V01, titled: “Development of William’s Ridge, Kerguelen Plateau: tectonics, hotspot magmatism, microcontinents, and Australia’s Extended Continental Shelf” between January 08 and March 06, 2020 departing from Henderson (WA) and returning back to Fremantle (WA).The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information at Rig Seismic Seamount, Williams Ridge, Broken Ridge and on associated transits.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 66 files totalling 5.6 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.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.

本数据集记录了由海洋国家设施（Marine National Facility, MNF）的“调查者号”（RV Investigator）科考船执行的IN2020_V01航次所采集的多波束测深仪（multibeam echosounder）数据，该航次主题为“凯尔盖朗高原威廉山脊的演化：构造运动、热点岩浆作用、微大陆及澳大利亚延伸大陆架”，航次执行时间为2020年1月8日至3月6日，启航港为西澳大利亚州亨德森港，终到港为弗里曼特尔港。本航次使用康斯伯格（Kongsberg）EM710 MKII多波束测深仪，在里格海山（Rig Seismic Seamount）、威廉山脊、破碎山脊及相关航行航线上采集了海底地形与反向散射（backscatter）数据。该测深仪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40~100 kHz。本数据集的水深与反向散射原始数据以*.all格式存储，水柱反向散射（watercolumn backscatter）数据以*.wcd格式存储，所有数据均留存于澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）。本数据集共包含66个文件，总原始数据量达5.6 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。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。