Darwin Harbour Habitat Mapping Program: Profile curvature

This resource contains a profile curvature grid 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 profile curvature grid was 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. It measures the curvature of the surface in the direction of the slope.

本数据集包含大达尔文港（greater Darwin Harbour）区域的剖面曲率网格（profile curvature grid），作为达尔文港与拜诺港（Bynoe Harbour）海底基础测绘项目的组成部分。本项目由INPEX牵头的伊奇斯液化天然气（Ichthys LNG）项目向北领地政府环境与自然资源部（Northern Territory Government’s Department of Environment and Natural Resources, NTG-DENR）提供的补偿资金资助，并获得澳大利亚地球科学局（Geoscience Australia, GA）与澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）的联合投资。该项目旨在通过整理与采集基础数据，提升对达尔文港及拜诺港海域海洋环境的认知，所获数据可用于生成专题生境地图，为海洋资源管理决策提供支撑。本次剖面曲率网格由澳大利亚地球科学局、澳大利亚海洋科学研究所与北领地政府环境与自然资源部在2011至2017年间开展的多份勘测数据汇编而成，涵盖GA0333（Siwabessy等，2015）、GA0341（Siwabessy等，2015）、GA0351/SOL6187（Siwabessy等，2016）、GA4452/SOL6432（Siwabessy等，2017）、GA0356（Radke等，2017）以及GA0358、GA0359（Radke等，2018），同时补充了此前由澳大利亚地球科学局、澳大利亚海洋科学研究所、北领地政府环境与自然资源部及达尔文港务局采集的GA4425与GA0333勘测数据。该网格用于表征地表沿坡度方向的曲率。