Darwin Harbour Habitat Mapping Program: Tidal current derived seabed shear stress (50th and 75th percentile)

This resource contains tidal current derived seabed shear stress grids (50th and 75th percentile) for the greater Darwin Harbour region as part of a baseline seabed mapping program of Darwin Harbour and Bynoe Harbour. This project was funded through offset funds provided by an INPEX-led Ichthys LNG Project to the Northern Territory Government’s Department of Environment and Natural Resources (NTG-DENR) with co-investment from Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS). The intent of this program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps and information to underpin marine resource management decisions. The tidal current derived seabed shear stress grids (50th and 75th percentile) were derived from a compilation of multiple surveys undertaken by GA, AIMS and NTG-DENR between 2011 and 2017, including GA0333 (Siwabessy et al., 2015), GA0341 (Siwabessy et al., 2015), GA0351/SOL6187 (Siwabessy et al., 2016), GA4452/SOL6432 (Siwabessy et al., 2017), GA0356 (Radke et al., 2017), and GA0358 and GA0359 (Radke et al., 2018), adding to those from previous surveys GA4425 and GA0333 collected by GA, AIMS, NTG-DENR and Darwin Port Authority.

本数据集包含大达尔文港区域的、由潮流计算得到的海底剪切应力网格数据（第50百分位与第75百分位），该数据是达尔文港与拜诺港海底基线测绘项目的组成部分。本项目资金由INPEX牵头的伊契斯液化天然气（LNG）项目所提供的补偿资金拨付给北领地政府环境与自然资源部（NTG-DENR），并由澳大利亚地质调查局（GA）与澳大利亚海洋科学研究所（AIMS）共同出资。本项目旨在通过整理与采集基线数据，提升对达尔文港及拜诺港海域海洋环境的认知，这些基线数据可用于生成专题生境地图与相关信息，为海洋资源管理决策提供支撑。本次的潮流衍生海底剪切应力网格数据（第50与第75百分位），源自2011年至2017年间由GA、AIMS与NTG-DENR开展的多份勘测数据汇编，涵盖GA0333（Siwabessy等人，2015）、GA0341（Siwabessy等人，2015）、GA0351/SOL6187（Siwabessy等人，2016）、GA4452/SOL6432（Siwabessy等人，2017）、GA0356（Radke等人，2017）以及GA0358与GA0359（Radke等人，2018）的数据，同时补充了此前由GA、AIMS、NTG-DENR与达尔文港务局采集的GA4425与GA0333勘测数据。