NZ Geoid 2009

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

11823
233
Updated
06 May 2014

This dataset was last updated on LINZ Data Service on 06 May 2014.

The New Zealand Quasigeoid2009 (NZGeoid2009) can be used to convert GPS derived ellipsoidal heights to New Zealand Vertical Datum 2009 (NZVD2009) normal-orthometric heights that relate more closely to mean sea level and the local gravity field. NZGeoid2009 can also be used to transform heights to any of the 13 official local vertical datums used across New Zealand, more information on this transformation is available at www.linz.govt.nz/geodetic/conversion-coordinates/h....

NZGeoid2009 is formally defined in the LINZ standard LINZS25004 which can be obtained from www.linz.govt.nz/geodetic/standards-publications/s.... NZGeoid2009 models the difference between the GRS80 ellipsoid and the geoid over the New Zealand region. The geoid is a theoretical surface of equal gravity that roughly approximates the mean level of the sea across the Earth.

NZGeoid2009 is published by LINZ and was computed by enhancing the EGM2008 global gravity model with terrestrial gravity observations over New Zealand and DNSC08 satellite altimetry data over the oceans. The model is published on a one arc-minute grid covering New Zealand's extended exclusive economic zone.

The accuracy of NZGeoid2009 is nominally ±0.08 metres across New Zealand. More information on the accuracy in relation to the 13 local vertical datums is provided in LINZS25004.

Layer ID 51051
Data type Grid
Resolution About 1579.000m
Services Raster Query API, Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Airborne Gravity Flight Lines at Elevation (2013-2014) Description

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Creative Commons Attribution 4.0 International

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1330
79
Added
31 Jan 2017

This item was first added to LINZ Data Service on 31 Jan 2017

4

This document provides detailed metadata for the NZ Airborne Gravity Flight Lines at Elevation (2013-2014) spatial layer as released on the LINZ Data Service (LDS).

Document ID12825
File namenz-airborne-gravity-flight-lines-at-elevation-2013-2014-description.pdf
TypePDF
Size357 KB

Canterbury Earthquake Tables

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Creative Commons Attribution 4.0 International

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1754
158
Added
26 Apr 2013

This item was first added to LINZ Data Service on 26 Apr 2013

11

This document provides detailed metadata for the Canterbury earthquake spatial layers as released on the LINZ Data Service (LDS). This is a transitional document and all content will be migrated data.linz.govt.nz and www.linz.govt.nz in the future.

Document ID11019
File namecanterbury-earthquake-tables.pdf
TypePDF
Size65.6 KB
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