AusBathyTopo (Torres Strait) 30m 2023 - A High-resolution Depth Model (20230006C)

The Australian Bathymetry and Topography (AusBathyTopo) Torres Strait dataset contains depth and elevation data compiled from all available data within the Torres Strait into a 30 m-resolution Digital Elevation Model (DEM). The Torres Strait lies at the northern end of the Great Barrier Reef (GBR), the largest coral reef ecosystem on Earth, and straddles the Arafura Sea to the west and the Coral Sea to the east.

The Torres Strait area is bounded by Australia, Indonesia and Papua New Guinea. Bathymetry mapping of this extensive reef and shoal system is vital for the protection of the Torres Strait allowing for the safe navigation of shipping and improved environmental management.

Over past ten years, deep-water multibeam surveys have revealed the highly complex continental slope canyons in deeper Coral Sea waters. Shallow-water multibeam surveys conducted by the US-funded Source-to-Sink program revealed the extensive Fly River delta deposits. Airborne LiDAR bathymetry acquired by the Australian Hydrographic Office cover most of the Torres Strait and GBR reefs, with coverage gaps supplemented by satellite derived bathymetry. The Geoscience Australia-developed National Intertidal DIgital Elevation Model (NIDEM) improves the source data gap along Australia’s vast intertidal zone.

We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” The datasets used were collected by the Marine National Facility on 13 voyages (see Lineage for identification).

All source bathymetry data were extensively edited as point clouds to remove noise, given a consistent WGS84 horizontal datum, and where possible, an approximate MSL vertical datum.

The 30 m-resolution grid is a fundamental dataset to underpin marine habitat mapping, and can be used to accurately simulate water mixing within a whole-of-GBR scale hydrodynamic model.

This dataset is not to be used for navigational purposes.

澳大利亚水深地形数据集（AusBathyTopo）托雷斯海峡子数据集整合了托雷斯海峡内所有可用的深度与高程数据，构建成分辨率为30米的数字高程模型（Digital Elevation Model，DEM）。托雷斯海峡位于地球上最大的珊瑚礁生态系统——大堡礁（Great Barrier Reef，GBR）的北端，西临阿拉弗拉海，东接珊瑚海。

托雷斯海峡区域被澳大利亚、印度尼西亚和巴布亚新几内亚环绕。对这一广阔的礁滩系统进行水深测绘，对于托雷斯海峡的保护至关重要，有助于保障航运安全并改善环境管理。

过去十年间，深水多波束测量揭示了珊瑚海深水区高度复杂的大陆坡峡谷。由美国资助的“源到汇”计划开展的浅水多波束测量，发现了广阔的弗莱河三角洲沉积。澳大利亚水文局获取的机载激光雷达水深数据覆盖了托雷斯海峡和大堡礁的大部分区域，覆盖缺口由卫星派生水深数据补充。澳大利亚地球科学局开发的国家潮间带数字高程模型（National Intertidal Digital Elevation Model，NIDEM）填补了澳大利亚广阔潮间带的源数据空白。

我们感谢使用联邦科学与工业研究组织（CSIRO）海洋国家设施（https://ror.org/01mae9353）开展此项研究。所用数据集由海洋国家设施通过13次航行采集（详见数据 lineage 部分）。

所有源水深数据均以点云形式进行了广泛编辑以去除噪声，并采用统一的WGS84水平基准，且在可能的情况下采用近似平均海平面（MSL）垂直基准。

该30米分辨率网格是支撑海洋栖息地制图的基础数据集，可用于在整个大堡礁尺度的水动力模型中准确模拟水体混合。

本数据集不得用于导航目的。