Recent Observations of Ground Deformation at TVZ Geothermal Systems Using Multi-Temporal InSAR

M. Harvey, J. McLeod and A. Calibugan

Key words: Tokaanu, Nga Tamariki, Zealand, StaMPS, geothermal, volcanic, subsidence, InSAR, Sentinel
Conference: New Zealand Geothermal Workshop
Year: 2022
Session: Session 1.3 - ENVIRONMENTAL & SOCIAL
Language: English
Paper number: 27

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Abstract

Ground deformation data captured by Interferometric synthetic-aperture radar (InSAR) satellites is of increasing interest for environmental monitoring of geothermal systems worldwide. This study investigates recent deformation patterns associated the Ng? Tamariki and Tokaanu geothermal systems in the Taupo Volcanic Zone (TVZ), New Zealand. At Ng? Tamariki, InSAR agrees with 2019-21 levelling survey results, which provides confidence in the method. At Tokaanu, vegetation covers most of the study area, which may degrade InSAR results and overwhelm subtle deformation signals.

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