A multiscale approach for detection and mapping differential subsidence using multi-platform InSAR products
<p>Detecting and mapping subsidence is currently supported by interferometric synthetic aperture radar (InSAR) products. However, several factors, such as band-dependent processing, noise presence, and strong subsidence limit the use of InSAR for assessing differential subsidence, which can le...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2020-04-01
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| Series: | Proceedings of the International Association of Hydrological Sciences |
| Online Access: | https://www.proc-iahs.net/382/173/2020/piahs-382-173-2020.pdf |
| Summary: | <p>Detecting and mapping subsidence is currently supported
by interferometric synthetic aperture radar (InSAR) products. However,
several factors, such as band-dependent processing, noise presence, and
strong subsidence limit the use of InSAR for assessing differential
subsidence, which can lead to ground instability and damage to
infrastructure. In this work, we propose an approach for measuring and
mapping differential subsidence using InSAR products. We consider synthetic
aperture radar (SAR) data availability, data coverage over time and space,
and the region's subsidence rates to evaluate the need of post-processing,
and only then we interpret the results. We illustrate our approach with two
case-examples in Central Mexico, where we process SAR data from the Japanese
ALOS (L-band), the German TerraSAR-X (X-band), the Italian COSMO-SkyMed
(X-band) and the European Sentinel-1 (C-band) satellites. We find good
agreement between our results on differential subsidence and field data of
existing faulting and find potential to map yet-to-develop faults.</p> |
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| ISSN: | 2199-8981 2199-899X |