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Layer: Tsunami (ID: 23)

Name: Tsunami

Display Field: Evac_Zone

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Tsunami Wellington Region Evacuation Zones 2019. Wellington region tsunami evacuation map containing three zones; red, orange and yellow, corresponding to different threat levels. Last updated 2019. The red zone, also known as the shore exclusion zone, can encompass wave heights with a 1% annual exceedance probability (i.e. 100 yr return period) from all sources (local, regional and distant). The orange zone was defined using probabilistic wave heights with a 0.2% AEP (i.e. 500 yr return period) from regional (1-3 hr travel time away) and distant sources (>3 hr travel time away). The yellow zone was defined using probabilistic wave heights with a 0.04% AEP (i.e. 2500 yr return period) from all possible sources and corresponds to the maximum credible event. Further information can be found in the report: Leonard, G.S., et al (2008), Tsunami Evacuation Zones for Wellington and Horizons Regions Defined by a GIS-Calculated Attenuation Rule. GNS Science Report 2008/30, 22pp. Mueller, C., Power, W.L. and Wang, X. (2015), Hydrodynamic Inundation Modelling and Delineation of Tsunami Evacuation Zones for Wellington Harbour. GNS Science Consultancy Report 2015/176, 30 p.

Copyright Text: GWRC

Default Visibility: true

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Supported Query Formats: JSON, geoJSON

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