The Search for Flight MH370 - Phase 2 Raw and Processed Data

On behalf of Australia, and in support of the Malaysian accident investigation, the Australian Transport Safety Bureau (ATSB) led 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 marine surveys, which were undertaken to provide a detailed map of the sea floor topography to aid navigation during the underwater search. Prior to the Phase 1 bathymetric survey, very little was known about the sea floor in the MH370 search area, as few marine surveys have taken place in the area. Existing maps of the sea floor were coarse, having been derived from satellites and only providing a general indication of water depth. Before the underwater search for MH370 could begin, it was necessary to accurately map the sea floor to ensure that the search was undertaken safely and effectively. Survey vessels spent months at sea, scanning the sea floor with multibeam sonar and side scan sonar to gather detailed, high-resolution data.This collation of datasets contains the high resolution raw and processed data acquired during Phase 2 of the search for MH370 as received by third party operators. The Phase 2 underwater search data was acquired by multiple vessels, including the Fugro Equator, Fugro Supporter, Fugro Discovery, Havila Harmony, Dong Hai Jiu 101 and Go Phoenix. Surveys were conducted using towed and autonomous underwater vehicles between September 2014 to January 2017, collecting over 121,000 square kilometres of high resolution data in the search area.All material and data is subject to copyright. Please note the creative commons copyright notice and relating to the re-use of this material. Geoscience Australia's preference is that you attribute the datasets (and any material sourced from it) using the following wording: Source: Governments of Australia, Malaysia and the People's Republic of China, 2018. MH370 Phase 2 data - Raw and processed.We honour the memory of those who have lost their lives and acknowledge the enormous loss felt by their loved ones.

受澳大利亚委托，为配合马来西亚事故调查工作，澳大利亚运输安全局（Australian Transport Safety Bureau, ATSB）牵头在南印度洋开展马航MH370失联航班的搜寻作业。澳大利亚地球科学局（Geoscience Australia）为ATSB提供咨询意见、专业技术支持与协助，以推进海底测绘工作——此次测绘旨在绘制高精度海底地形地图，为水下搜寻作业提供导航辅助。
在第一阶段水深测量作业启动前，MH370搜寻区域的海底地形几乎未被探明，因该区域极少开展海洋测绘作业。现有海底地图精度较低，仅通过卫星数据绘制，仅能大致体现水深分布。在启动MH370水下搜寻前，必须先精准测绘海底地形，以保障搜寻作业安全高效推进。
多艘测绘船耗时数月在作业海域巡航，通过多波束声呐与侧扫声呐扫描海底，采集高精度的详细测绘数据。
本数据集汇编了第三方运营商提交的、MH370搜寻第二阶段所获取的高精度原始与处理后数据。第二阶段水下搜寻作业由多艘船舶承担，包括富格赤道号（Fugro Equator）、富格支持者号（Fugro Supporter）、富格发现号（Fugro Discovery）、哈维拉·哈莫尼号（Havila Harmony）、东海救101及凤凰号（Go Phoenix）。搜寻作业采用拖曳式设备与自主式水下潜器开展，作业时段为2014年9月至2017年1月，累计在搜寻区域采集超过12.1万平方公里的高精度数据。
所有资料与数据均受版权保护。请注意本资料再利用需遵循的相关知识共享版权声明。澳大利亚地球科学局建议，对本数据集（及从中获取的任何资料）的引用应采用以下表述：来源：澳大利亚、马来西亚与中华人民共和国政府，2018年。MH370第二阶段数据——原始与处理后数据。
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