Description: Combined Earthquake Hazard. This Combined Earthquake hazard shapefile is a compilation of all "combined earthquake hazard" coverages in major urban areas of Wellington Region. The coverages represent overlays of all previous earthquake hazard data. i.e.:
1: Area of tsunami inundation
2: 20m buffer along major fault traces
3: Ground shaking
4: Liquefaction potential
5: Slope failure.
Map publication reference: WRC/RP-T-96/15
For notes on how this coverage was created refer to:
Mapping methology and Risk Mitigation Measures Publication: WRC/RP-T-96/22.
See also Ian Browns web page: http://www.irba.co.nz/pubs/report2.html
Description: Earthquake Groundshaking Potential. Ground shaking series in the major urban areas of the Wellington Region. This shapefile is compiled from the "ground shaking series" coverages. This map was accompanied by notes (Publication WRC/PP-T-92/45)
Description: Earthquake Liquefaction Potential. Liquefaction potential in the Wellington Region urban areas. This shapefile is a compilation of the "liquefaction potential" coverage series with accompanying notes (Publication WRC/PP-T-93/73). An added attribute "Severity" differs slightly to the "SED_CODE" attribute
Description: Earthquake Slope Failure potential. Earthquake induced slope failure susceptibility zones for the Wellington Region. This shapefile is compiled from the "slope failure series" coverages. See Publication WRC/PP-T-95/06 for accompanying notes
Description: Visual surface expression of the Martinborough Fault tracefeature showing the line of most likely rupture in an earthquake. Based on aerial photographic analysis, LiDAR topographic data, field mapping and differential GPS of the vertical offsets of alluvial fan surfaces. The surface expression, or trace, of the Martinborough Fault is onlypreserved for a length of 1.5 km where the fault crosses old (55,000-70,000 years) alluvialfans. Across these old alluvial fans, the trace is best described as a broad fold-scarp (about4-5 m high) that defines the steep limb of an anticline-syncline pair.
Definition Expression: N/A
Copyright Text: Litchfield, N., Van Dissen, R. and Nicol, A. (2006), Martinborough Fault project. GNS Science consultancy report 2006/91. Commissioned by Greater Wellington Regional Council and South Wairarapa District Council.
Description: Along the 1.5 km lengthof the Martinborough Fault a zone has been defined that encompasses the area of most intense folding. This zone is 300-450 m wide, and, using the terminology in the MfE guidelines, it is attributed as having a Distributed Fault Complexity. This zone of deformation has been extended to the northeast and southwest across younger alluvial terraces (<15,000 years old) to encompass deflected streams and subtle (sub-metre) flattening of topographic gradients. These extended zones are attributed as having an Uncertain - poorly constrained Fault Complexity.
Definition Expression: N/A
Copyright Text: Litchfield, N., Van Dissen, R. and Nicol, A. (2006), Martinborough Fault project. GNS Science consultancy report 2006/91. Commissioned by Greater Wellington Regional Council and South Wairarapa District Council.
Description: Kapiti Fault Zones. Buffer zones for fault-related features mapped by IGNS for the Kapiti Coast District, 2002-2003. Based on air-photo interpretation. Commissioned by KCDC and GWRC.
Description: Wairarapa Fault Zones (URS,2006). Wairarapa areas showing zones containing 12 active fault traces. Supplied by URS Corp from results of a study commissioned by GWRC. These faults have a known recurrence interval of less than 5000 years. This data study was requested by Helen Grant, Hazards Analyst, & results sent to Iain Dawe, GWRC Hazards Analyst, in 2006. Excludes faults crossing DoC land. A 20 metre setback distance has been applied to both sides of the fault rupture zone to create fault avoidance zones. There is an accompanying report.
Each fault zone is assigned complexity attributes and a recurrence interval class.
Description: Upper Hutt Fault Zones (IGNS,2005). Fault avoidance zones for the 5 known active faults in the Upper Hutt City TA area. Surveyed by IGNS for GWRC in 2005. See report 551.22 DIS 2 in the GWRC library; 'Upper Hutt City Fault Trace Project", R Van Dissen et al, IGNS Report 2005/151.
Description: LiDAR elevation data shows land elevation in centimetres above Mean High Water Springs-10 (MHWS10). MHWS10 is the mean high water spring tide exceeded 10 percent of the time, which is often used as a practical high tide level for infrastructure design works, and also for estimating extreme high (e.g. the 100-year Average Recurrence Interval) storm tides.
Description: Tsunami Wellington Region Evacuation Zones 2010. Wellington region tsunami evacuation map containing three zones; red, orange and yellow, corresponding to different threat levels.
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.