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Canterbury Earthquake (14 Feb 2016) Geodetic Marks

  • Added 25 Feb 2016
  • Updated 19 Apr 2018

Coordinates computed from surveys undertaken after the 14 February 2016 Canterbury earthquake. These should be consistent with any observations made after this earthquake (neglecting any localised deformation such as that due to liquefaction).

For further information about this dataset, see the Canterbury earthquake information.

These coordinates are only provisional. Analysis is ongoing as further data is collected. Coordinates were calculated using SNAP v2.5.33. Stations were constrained using coordinates of distant PositioNZ continuous GNSS stations that were unaffected by the earthquake.

The standard deviations of coordinates are 0.01m horizontally and 0.02m vertically, relative to the PositioNZ network.

Coordinate changes due to the earthquake have been calculated by comparing pre and post-earthquake coordinates. Pre-earthquake coordinates were calculated relative to public and private continuous GNSS stations. These continuous GNSS stations had data processed for several days early in 2016 (before the earthquake). Other pre-earthquake geodetic data was then readjusted with the continuous GNSS data. Note that this means these coordinate changes may differ slightly from those that would be calculated by comparing the post-earthquake coordinates with those currently in the Geodetic Database.

These coordinates are suitable for use in surveys and other geospatial activities in Canterbury and Christchurch.


Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.


TagsHAZARDS-Earthquake, LAND-Cadastre, LAND-Geodesy, New Zealand
RegionsChristchurch City
MetadataISO 19115/19139, Dublin Core

Technical Details

Layer ID 53322
Data type Vector point
Feature count 149
Primary key nod_id
Attributes nod_id, geodetic_code, current_mark_name, geodetic_database_link, post_14feb2016_nztm_north, post_14feb2016_nztm_east, post_14feb2016_ellipsoidal_height, eq_14feb2016_north_change, eq_14feb2016_east_change, eq_14feb2016_horizontal_change, eq_14feb2016_height_change
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), Atom Feed


Added25 Feb 2016
Last updated20 Jun 2016
Revisions 7 - Browse all revisions
Current revision Imported on June 20, 2016 in NZGD2000 / New Zealand Transverse Mercator 2000.
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