a67eb728-3c4b-49d5-bcef-638dc3f62246 urn:uuid en UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T12:03:47 creation ISO 19115 2016 Darwin Harbour Habitat Mapping Program: Benthic position index a67eb728-3c4b-49d5-bcef-638dc3f62246 This resource contains a benthic position index 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 benthic position index 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. The data is calculated from the bathymetry data. It measures the benthic (topographic) position index at a local seabed. A positive BPI value usually correspond with a location of high ground; while, a negative BPI value usually correspond with a location of low ground. {"type": "Polygon", "coordinates": [[[130.25, -12.77], [131.0, -12.77], [131.0, -12.1], [130.25, -12.1], [130.25, -12.77]]]} 130.25 131.0 -12.77 -12.1 Bathymetry Exclusive Economic Zone Marine Environmental Baselines Marine Survey Published_External Download the data (esri grid) [284 MB] documentDigital Download the data (esri grid) [284 MB] ZIP Link to collection record documentDigital Link to collection record HTML