Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes
Changes in subsurface water resources might alter the surrounding ground by generating subsidence or uplift, depending on geological and hydrogeological site characteristics. Improved understanding of the relationships between surface water storage and ground deformation is important for design and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/3/406 |
| _version_ | 1797407801567346688 |
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| author | Mehdi Darvishi Georgia Destouni Saeid Aminjafari Fernando Jaramillo |
| author_facet | Mehdi Darvishi Georgia Destouni Saeid Aminjafari Fernando Jaramillo |
| author_sort | Mehdi Darvishi |
| collection | DOAJ |
| description | Changes in subsurface water resources might alter the surrounding ground by generating subsidence or uplift, depending on geological and hydrogeological site characteristics. Improved understanding of the relationships between surface water storage and ground deformation is important for design and maintenance of hydraulic facilities and ground stability. Here, we construct one of the longest series of Interferometric Synthetic Aperture Radar (InSAR) to date, over twenty-five years, to study the relationships between water level changes and ground surface deformation in the surroundings of Lake Mead, United States, and at the site of the Hoover Dam. We use the Small Baseline Subset (SBAS) and Permanent scatterer interferometry (PSI) techniques over 177 SAR data, encompassing different SAR sensors including ERS1/2, Envisat, ALOS (PALSAR), and Sentinel-1(S1). We perform a cross-sensor examination of the relationship between water level changes and ground displacement. We found a negative relationship between water level change and ground deformation around the reservoir that was consistent across all sensors. The negative relationship was evident from the long-term changes in water level and deformation occurring from 1995 to 2014, and also from the intra-annual oscillations of the later period, 2014 to 2019, both around the reservoir and at the dam. These results suggest an elastic response of the ground surface to changes in water storage in the reservoir, both at the dam site and around the reservoir. Our study illustrates how InSAR-derived ground deformations can be consistent in time across sensors, showing the potential of detecting longer time-series of ground deformation. |
| first_indexed | 2024-03-09T03:46:53Z |
| format | Article |
| id | doaj.art-e1fabb8b417d4fba9eae5106fa06a2f6 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T03:46:53Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-e1fabb8b417d4fba9eae5106fa06a2f62023-12-03T14:33:21ZengMDPI AGRemote Sensing2072-42922021-01-0113340610.3390/rs13030406Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level ChangesMehdi Darvishi0Georgia Destouni1Saeid Aminjafari2Fernando Jaramillo3Department of Physical Geography, Stockholm University, SE-106 91 Stockholm, SwedenDepartment of Physical Geography, Stockholm University, SE-106 91 Stockholm, SwedenDepartment of Physical Geography, Stockholm University, SE-106 91 Stockholm, SwedenDepartment of Physical Geography, Stockholm University, SE-106 91 Stockholm, SwedenChanges in subsurface water resources might alter the surrounding ground by generating subsidence or uplift, depending on geological and hydrogeological site characteristics. Improved understanding of the relationships between surface water storage and ground deformation is important for design and maintenance of hydraulic facilities and ground stability. Here, we construct one of the longest series of Interferometric Synthetic Aperture Radar (InSAR) to date, over twenty-five years, to study the relationships between water level changes and ground surface deformation in the surroundings of Lake Mead, United States, and at the site of the Hoover Dam. We use the Small Baseline Subset (SBAS) and Permanent scatterer interferometry (PSI) techniques over 177 SAR data, encompassing different SAR sensors including ERS1/2, Envisat, ALOS (PALSAR), and Sentinel-1(S1). We perform a cross-sensor examination of the relationship between water level changes and ground displacement. We found a negative relationship between water level change and ground deformation around the reservoir that was consistent across all sensors. The negative relationship was evident from the long-term changes in water level and deformation occurring from 1995 to 2014, and also from the intra-annual oscillations of the later period, 2014 to 2019, both around the reservoir and at the dam. These results suggest an elastic response of the ground surface to changes in water storage in the reservoir, both at the dam site and around the reservoir. Our study illustrates how InSAR-derived ground deformations can be consistent in time across sensors, showing the potential of detecting longer time-series of ground deformation.https://www.mdpi.com/2072-4292/13/3/406InSARSentinel-1ERSEnvisatALOSSBAS |
| spellingShingle | Mehdi Darvishi Georgia Destouni Saeid Aminjafari Fernando Jaramillo Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes Remote Sensing InSAR Sentinel-1 ERS Envisat ALOS SBAS |
| title | Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes |
| title_full | Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes |
| title_fullStr | Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes |
| title_full_unstemmed | Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes |
| title_short | Multi-Sensor InSAR Assessment of Ground Deformations around Lake Mead and Its Relation to Water Level Changes |
| title_sort | multi sensor insar assessment of ground deformations around lake mead and its relation to water level changes |
| topic | InSAR Sentinel-1 ERS Envisat ALOS SBAS |
| url | https://www.mdpi.com/2072-4292/13/3/406 |
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