The spatial and temporal subsidence variability of the East Mesa Geothermal Field,California, USA,and its potential impact on the All American Canal System |
| |
| Authors: | Joo-Yup Han R. R. Forster D. E. Moser A. L. J. Ford J. Ramírez-Hernández K. F. Tiampo |
| |
| Affiliation: | 1. Department of Geography, 260 South Central Campus Drive Room 270 , University of Utah , Salt Lake City, UT, 84112-9155, USA joo-yup.han@geog.utah.edu;3. Department of Geography, 260 South Central Campus Drive Room 270 , University of Utah , Salt Lake City, UT, 84112-9155, USA;4. Department of Earth Sciences , University of Western Ontario , London, Ontario, N6A 5B7, Canada;5. School of Conservation Sciences, Bournemouth University, Christchurch House, Talbot Campus , Poole, Dorset, BH12 5BB, UK;6. Engineering Institute, Universidad Autónoma de Baja California-Mexicali , BC, México |
| |
| Abstract: | The spatiotemporal variability of subsidence around the East Mesa Geothermal Field (EMGF) near the All American Canal (AAC) has been measured using 30 temporally averaged interferograms from 1992 to 2000. Deformation rate maps from two shorter time periods indicated the maximum subsidence rate of the EMGF was reduced from??43 mm year?1 (1992–1997) to??34 mm year?1 (1996–2000) corresponding to decreasing net geothermal water production. The maximum subsidence on the East Highline Canal was??9.5 ± 0.5 and??2.4 ± 0.8 cm for each shorter time period. Interferometric synthetic aperture radar (InSAR) stacking demonstrated its utility in monitoring subsidence of the canal caused by the nearby geothermal plant at regional coverage superior to ground levelling networks. Such data on the subsidence of surface and subsurface hydrodynamics along the US–Mexico border are scarce, and are particularly significant in a zone of present and likely future acute water resource management sensitivity. |
| |
| Keywords: | |
|
|
