RV Investigator Voyage IN2023_V06 EM710 MKII Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2023_V06, titled: "Understanding Eddy Interactions and Their Impacts In the East Australian Current System." The voyage took place between October 9 and November 2, 2023, departing from Sydney (NSW) and returning to Sydney.

The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information and watercolumn backscatter around NSW coastal areas.

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 18 files totalling 2.29 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.

本记录描述了“调查者号”（RV Investigator）科考船IN2023_V06航次采集的多波束测深数据（multibeam echosounder data），航次主题为"东澳大利亚洋流系统中的涡旋相互作用及其影响"。该航次于2023年10月9日至11月2日开展，从新南威尔士州（NSW）悉尼港起航并最终返回悉尼港。

本次航次采用Kongsberg EM710 MKII型多波束测深仪，采集了新南威尔士州沿海区域的海底地形测深数据（seafloor bathymetry）、反向散射信息以及水体柱反向散射数据。

该EM710 MKII型测深仪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。

本数据集的测深与反向散射原始数据以*.all格式存储，水体柱反向散射原始数据以*.wcd格式存储，存储于澳大利亚联邦科学与工业研究组织（CSIRO）。本数据集共包含18个原始数据文件，总容量为2.29 GB。

数据采集阶段已对该数据施加声速剖面校正。*.all格式存储的测深数据已完成运动与位置校正。采用EGM2008模型解算GPS潮汐改正量并施加至处理后数据中。处理后数据已剔除异常值。处理后的测线数据以*.gsf格式与ASCII格式提供，处理后的测深栅格数据采用GeoTIFF格式存储。

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。额外的数据产品可根据申请提供。