SSCN SEGMENT 2-B South-west Corner Marine Park Bathymetry Acquisition (20240014S)

This dataset is part of a broader survey carried out by EGS onboard the survey vessel RV Bold Explorer (RV BE) during the SUBCO Subsea Cable Network (SSCN) cable route survey. The area is confined to the data within the South-west Corner Marine Park. The Survey team and client representative joined the RV Bold Explorer on 17th April 2024 at Fremantle Port, Australia. Following the embarkation of the survey team, equipment testing and commissioning was carried out. Calibration and verification of the DGPS positioning system and survey gyros onboard RV BE were performed while the vessel was alongside at Fremantle Port, Australia between 17th April and 18th April 2024. Prior to departure, tow sensors and hull-mounted sensors were wet tested. All systems were found to be operational. The RV Bold Explorer departed Fremantle Port, Australia and transited to the first site on 19th April 2024. The offshore calibration of shallow water multibeam echosounder (MBES) and USBL were performed on 19th April 2024 while the calibration of deep water MBES was carried out on 20th April 2024.The SSCN Segment 2-B survey comprised an investigation of bathymetry, seabed features and shallow geology along the proposed route. A subsequent geotechnical sampling programme was also executed.This dataset is not to be used for navigational purposes.

本数据集为EGS在调查船"Bold Explorer"号（RV Bold Explorer，缩写RV BE）上开展的一项大型勘测工作的组成部分，该工作属于SUBCO海底电缆网络（Subsea Cable Network, SSCN）的缆道路线勘测项目。本次勘测区域限定于西南角海洋公园范围内。勘测团队与客户代表于2024年4月17日在澳大利亚弗里曼特尔港登船。登船完成后，勘测团队随即开展设备测试与调试工作：2024年4月17日至18日期间，在船舶停靠澳大利亚弗里曼特尔港时，完成了RV BE船上差分GPS（Differential GPS, DGPS）定位系统与勘测陀螺的校准与验证工作；离港前，团队还对拖曳式传感器与船载传感器进行了水上测试，所有系统均运行正常。2024年4月19日，"Bold Explorer"号驶离澳大利亚弗里曼特尔港，航行至首个勘测站点，并于当日完成浅水多波束测深仪（Multibeam Echosounder, MBES）与超短基线定位系统（Ultra-Short Baseline, USBL）的海上校准工作；深水多波束测深仪的海上校准则于2024年4月20日完成。SSCN 2-B段勘测工作涵盖拟建缆道路线沿线的水深测量（bathymetry）、海底特征（seabed features）与浅层地质（shallow geology）调查，后续还实施了岩土取样（geotechnical sampling）作业。本数据集不得用于导航用途。