Heretaunga Plains SkyTEM survey
Hawkes Bay Regional Council commissioned SkyTEM Australia to collect SkyTEM data for 3D aquifer mapping. In January/February 2020, 2610 km of SkyTEM data were collected over the Heretaunga Plains, including four offshore lines. Data processing was carried out by GNS Science to remove electromagnetic noise. The retained data was used to develop both smooth and sharp resistivity models for the area. The standard depth of investigation varies from 12 to 650 m for the onshore smooth resistivity model and from 20 to 72 m for the offshore smooth resistivity model. External Quality Control was provided by Aarhus University HydroGeophysics Group. The data is owned by Hawkes Bay regional council.
A series of 3D models were developed using the same horizontal regular grid as the existing Heretaunga numerical groundwater model (that will be revised in a subsequent piece of work). The 3D models utilise 100 x 100 m grid cells horizontally and 2-m-thick grid cells vertically. The primary objective was to provide detailed 3D models and hydrogeological interpretations suitable to be utilised by subsequent numerical modelling and online visualisation tools. 3D model datasets were created and saved in an accessible .csv format, with x,y,z defining the centre of each grid cell. This format enables rapid model visualisation in an interactive online webmap and as 3D block models within a Leapfrog viewer file
Cite as:
Rawlinson ZJ, Foged N, Westerhoff RS, Kellett RL. 2021. Hawke’s Bay 3D Aquifer Mapping Project: Heretaunga Plains SkyTEM data processing and resistivity models. Wairakei (NZ): GNS Science. 90 p. Consultancy Report 2021/93. (Final report on processing and resistivity modelling)
Rawlinson ZJ. 2023. Hawke’s Bay 3D Aquifer Mapping Project: 3D hydrogeological models from SkyTEM data in the Heretaunga Plains. Wairakei (NZ): GNS Science. 69 p. Consultancy Report 2023/57 (3D Hydrogeological modelling)
Simple
- Date (Publication)
- 2023-07-19
- Purpose
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The surveys were flown for 3D aquifer mapping and modelling by determining electrical resistivity variations in the study area.
- Status
- Completed
- Point of contact
-
Organisation name Individual name Electronic mail address Role GNS Science
Point of contact
- Maintenance and update frequency
- Not planned
- Keywords
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Resistivity
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- Keywords
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Geophysics
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Airborne
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Hydrogeology
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Hydrogeological
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groundwater
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aquifer
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Electromagnetic
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EM
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AEM
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SkyTEM
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- Classification
- Unclassified
- Use constraints
- Intellectual property rights
- Other constraints
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This data is owned by Hawke's Bay Regional Council
- Distance
- 100 100 m
- Language
- English
- Topic category
-
- Geoscientific information
- Geographic identifier
- urn:ogc:def:crs:EPSG:2193
))
Vertical extent
- Minimum value
- 20
- Maximum value
- 640
- Distribution format
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Name Version
- OnLine resource
- Hierarchy level
- Dataset
- Statement
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See accompanying reports for full description of acquisition, processing and modelling
Metadata
- File identifier
- c1fb035b-fe6c-448c-8725-c5d5667352f1 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
Dataset
- Date stamp
- 2024-06-20T02:29:41.560232Z
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
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1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role GNS Science
Point of contact
