84f4b6b2-3173-4164-9c25-97a34eacaa99 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-01-11T04:58:03 creation ISO 19115 2016 Mapping and classification of Darwin Harbour seabed 84f4b6b2-3173-4164-9c25-97a34eacaa99 This data presents the results of seabed mapping and habitat classification surveys completed in Darwin Harbour during 2011 and 2013 as part of the Northern Territory Government's marine habitat mapping program. This research is a collaboration between Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS), the Department of Land Resource Management (DLRM) and the Darwin Port Corporation. Key objectives are to: - Produce detailed maps of the bathymetry and derived parameters such as slope and rugosity, - Classify the seabed into areas of hard and soft substrate, and, - Produce seabed habitat maps (or seascapes). Key outcomes from the surveys include: 1. Improved understanding of the seabed of Darwin Harbour. The main seabed geomorphic features identified in Darwin Harbour include banks, ridges, plains and scarps, and a deep central channel that divides into smaller and shallower channels. Acoustically hard substrates are found mostly on banks and are associated with rocky reef and sponge gardens, and are often overlain by a thin veneer of sandy sediment. In contrast, plains and channels are characterised by acoustically soft substrates and are associated with fine sediments (mud and sand). 2. Classification of physical seabed properties to produce a Seascape Map for Darwin Harbour. Six seascape classes (potential habitats) were derived using an Iterative Self Organising (ISO) unsupervised classification scheme. These six classes are related to statistically unique combinations of seabed substrate, relief, bedform and presence of sediment veneer (quite often inferred from presence of epibenthic biota). {"type": "Polygon", "coordinates": [[[130.68649, -12.58923], [130.94742, -12.58923], [130.94742, -12.3187], [130.68649, -12.3187], [130.68649, -12.58923]]]} 130.68649 130.94742 -12.58923 -12.3187 Benthic habitat Comments Marine Geoscience Multibeam profiling sonar backscatter bathymetry mapping marine marine environmental baselines SHAPE-ZIP documentDigital DATA ACCESS - This OGC WFS service returns the data (Darwin Harbour seabed) in Shapefile format. WFS seamap:SeamapAus_NT_DarwinHarbour_seabed_mapping documentDigital MAP - Darwin Harbour seabed classification WMS ALTERNATE DATA ACCESS - Original Darwin Harbour seabed mapping, high resoultion [direct download 172MB] documentDigital ZIP REPORT - Final project report [direct download] documentDigital PDF Original metadata record [GA Catalogue] documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML