Southern Indian Ocean (MH370) Backscatter 30m 2017 (20170168C)

On behalf of Australia, the Australian Transport Safety Bureau (ATSB) is leading search operations for missing Malaysian airlines flight MH370 in the Southern Indian Ocean. Geoscience Australia provided advice, expertise and support to the ATSB to facilitate bathymetric surveys, which were undertaken to provide a detailed map of the sea floor topography to aid navigation during the underwater search. Bathymetric and Backscatter data was acquired by multibeam sonar mounted on the hull of multiple vessels (GA survey reference: GA-4421, GA-4422 & GA-4430). Bathymetric surveys were conducted from June 2014 to February 2017, collecting over 710,000 square kilometres of data in the search area and along transit lines (to and from the search area). This backscatter dataset allows exploration of the seafloor topography at a resolution of 30m across the search and transit areas of the Southern Indian Ocean. This dataset is not to be used for navigational purposes.Not to be used for navigational purposes

澳大利亚运输安全局（Australian Transport Safety Bureau, ATSB）代表澳方，牵头在南印度洋开展失联马来西亚航空MH370航班的搜寻作业。澳大利亚地球科学局（Geoscience Australia）为该局提供咨询服务、专业技术支持与协助，以推进水深测量工作：本次测量旨在绘制高精度海底地形地图，辅助水下搜寻阶段的导航作业。多艘作业船体搭载的多波束声呐采集了水深与反向散射数据（澳大利亚地球科学局勘测编号：GA-4421、GA-4422及GA-4430）。本次水深测量工作于2014年6月至2017年2月间实施，在搜寻区域及往返该区域的航线上共采集超过71万平方公里的探测数据。本反向散射数据集可实现南印度洋搜寻区域与航线区域内30米分辨率的海底地形探测。本数据集不得用于导航用途。