Detecting Geothermal Subsidence Using Remote Sensing Methods
- Key words
- aerial, survey, photogrammetry, New, Zealand, drone, UAV, UAS, subsidence, PSInSAR, interferometry, radar, Sentinel
- Conference
- World Geothermal Congress
- Year
- 2020
- Session
- Environmental Aspects
- Language
- English
- Paper number
- 02005
Full text
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Abstract
Remote sensing data from aerial surveying and satellite is of interest for environmental monitoring and was recently trialed by Waikato Regional Council (WRC) in New Zealand. This study investigates known areas of ground subsidence in Taupo, New Zealand using aerial imagery and satellite data. Results confirm subsidence is ongoing, and demonstrate the use of remote sensing methods including photogrammetry and Persistent Scatterer Interferometric Synthetic Aperture Radar (PSInSAR) to quantify vertical surface change over time. The methods have a wide range of applications of interest to geothermal development, including reservoir modelling, and monitoring vegetation, geothermal surface features, surface subsidence and inflation.
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