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  New data for a model update of the Waiwera geothermalreservoir in New Zealand

Kühn, M., Stagpoole, V., Viskovic, G. P. D., Kempka, T. (2024): New data for a model update of the Waiwera geothermalreservoir in New Zealand. - Advances in Geosciences, 65, 1-7.
https://doi.org/10.5194/adgeo-65-1-2024

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 Creators:
Kühn, M.1, Author              
Stagpoole, Vaughan2, Author
Viskovic, Graham Paul D.2, Author
Kempka, T.1, Author              
Affiliations:
13.4 Fluid Systems Modelling, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146047              
2External Organizations, ou_persistent22              

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Free keywords: Waiwera; geothermalreservoir; New Zealand
 Abstract: Waiwera is a small coastal village located on New Zealand's North Island above a geothermal reservoir. The origin of the hot water is not well understood. An inferred fault zone at the base of the reservoir is thought to channelise the uprising thermal water. The most recent geological model of Waiwera integrates the depositional environment, mineralogical composition and stratigraphic structures. Coupled numerical fluid flow, heat and transport simulations indicated that further model revisions are required, with support by additional field campaigns, to increase the knowledge of the complex reservoir geology. In this study, gravity data were acquired around the greater Waiwera area. Its interpretation shows a potential fault downthrow in the basement. This feature was tested using a revised geological model in view of a focus for the hot water to rise upwards. The observed characteristic cold and hot water distribution in the system was simulated and the temperature profiles show an improved agreement in the near field around the centre of the reservoir.

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Language(s): eng - English
 Dates: 2024-08-122024-06-282024-08-222024-09-272024
 Publication Status: Finally published
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Internal
 Identifiers: DOI: 10.5194/adgeo-65-1-2024
GFZPOF: p4 T8 Georesources
OATYPE: Gold Open Access
 Degree: -

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Title: Advances in Geosciences
Source Genre: Journal, Scopus, oa
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Pages: - Volume / Issue: 65 Sequence Number: - Start / End Page: 1 - 7 Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals2_14
Publisher: Copernicus