RV Investigator Voyage IN2024_T02 EM710 MKII Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2024_T02, Brisbane to Singapore Transit which departed Brisbane on the 8th July 2024 and returned to Singapore on the 23rd July 2024.The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information and watercolumn backscatter between Brisbane and Singapore.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 664 files totalling 336.7 GB of raw data in this dataset.Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. GPS tide was computed using the EGM2008 model and applied to the processed data. Processed data has had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry 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IN2024_T02航次采集的多波束测深仪数据，该航次为布里斯班至新加坡过境航次，于2024年7月8日从布里斯班起航，2024年7月23日返回新加坡。本次航次使用康士伯（Kongsberg）EM710 MKII多波束测深仪，采集了布里斯班至新加坡航线的海底测深、反向散射信息以及水体反向散射数据。EM710 MKII的发射与接收角分辨率分别为0.5°×1°。该测深仪的标称频率范围为40至100 kHz。数据在澳大利亚联邦科学与工业研究组织（CSIRO）分别以*.all原始格式存储测深与反向散射数据，以*.wcd格式存储水体反向散射数据。本数据集共计664个文件，总原始数据量达336.7 GB。数据采集阶段已应用声速剖面进行校正。*.all格式存储的测深数据已完成运动与位置校正。采用EGM2008模型计算GPS潮汐改正量，并应用于已处理数据。已处理数据已剔除异常值。已处理的测线数据可通过*.gsf格式与ASCII格式获取，已处理的海底测深网格数据采用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。