331bde13-7812-45e5-8e0d-4d57f44c92e5 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T20:33:52 creation ISO 19115 2016 Benthic Position Index Grid of Darwin Harbour 331bde13-7812-45e5-8e0d-4d57f44c92e5 The Benthic (Topographic) Position Index (Weiss 2001) grid indicates the topographic positions of the cells. Positive TPI values represent locations that are higher than the average of their surrounding (ridges); negative TPI values represent locations that are lower than their surrounding (valleys); TPI values near zero are either flat areas or areas of constant slope. The benthic position index grid was derived from the bathymetry grid of Darwin Harbour. Please see the metadata of the bathymety grid for more details (GeoCat No: 74915). Weiss, A.D., 2001. Topographic position and landforms analysis. In: ESRI international user conference, 9-13 July 2001, San Diego, CA. {"type": "Polygon", "coordinates": [[[130.69, -12.59], [130.94, -12.59], [130.94, -12.32], [130.69, -12.32], [130.69, -12.59]]]} 130.69 130.94 -12.59 -12.32 AU-NT Bathymetry Grid Marine Data Marine Geoscience Published_External bathymetry marine File download documentDigital Download the file (ArcGIS-grid) ZIP Unnamed resource documentDigital HTML