55CF38E393A39B0CE050CD9B214421B8EnglishData Requests OfficerDepartment of Lands, Planning and EnvironmentGeospatial Services Unit (on behalf of department)Datarequests.DLPE@nt.gov.au2017-11-13AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile1.0 Top End Communities Storm Surge Mapping, Northern Territory2017-03-01The objective of the study is to quantify the likelihood of coastal and associated waterway areas within major remote towns and indigenous communities on the West Coast, Arnhem Land and Tiwi Islands areas being inundated by storm tide caused either by severe tropical cyclones or broad scale atmospheric influences. The study outcomes provided inundation data showing storm tide elevation depth that corresponds to a specific return period risk or ARI (Average Recurrence Interval). The provided storm tide probability levels are 100, 1,000, 2,000 and 10,000 year ARI. The inundation extent shows the total storm surge (technical terminology is storm tide) hazard risk due to tropical cyclones in terms of the ocean water level comprising the combined effects of astronomical tide plus storm surge plus wave setup for three statistical Average Recurrence Intervals (ARI) at a nearby open coast location. The Primary Storm Surge (PSS) Zone refers to the extent of inundation for a storm tide event of 100 year ARI. The Secondary Storm Surge (SSS) Zone refers to the further extent of inundation for a storm tide event of 1,000 year ARI. The Extreme Storm Surge Zone refers to the further extent of inundation for a storm tide event of 10,000 year ARI. The extent of PSS is used for land use planning. The extent of SSS is additional information for risk analysis. The extent does not include the possible effects of much localised wave run up.. Download the spatial data package (contains spatial data, maps and reports) via https://data.nt.gov.au/ You are licensed to use the DENR geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: https://creativecommons.org/licenses/by/4.0/legalcode If you do not agree to the terms and conditions you must not use the geospatial products. You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement: Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.English-18-101291382016-06-302017-02-27datasetnot knownComplete0The significant wave height values for the 100, 1,000, 2,000 and 10,000 year ARI were derived following the methodology closely set out in the storm tide scoping study for Major Remote Towns and Indigenous Communities - West Cost, Arnhem Cost and Tiwi Islands (GDH-SEA 2015) and includes an allowance for projected climate change impacts by the year 2100 that includes a 0.8 sea level rise and a 10% increase in the Tropical Cyclone wind speeds. The storm surge extent boundary polygon is collected via geographic Information system (ArcGIS). The ESRI Geodatabase, MapInfo Table and Google Earth KML derived using FME Workbench. The published map is derived from the ESRI Shape using Microstation, Bentley Microstation Design (V8) software. The core attributes information associated with the storm surge extents was derived from the nine Top End communities storm surge maps.