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Radar interferometry techniques for the study of ground subsidence phenomena: a review of practical issues through cases in Spain |
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| Authors: | R Tomás R Romero J Mulas J J Marturià J J Mallorquí J M Lopez-Sanchez G Herrera F Gutiérrez P J González J Fernández S Duque A Concha-Dimas G Cocksley C Castañeda D Carrasco P Blanco |
| Institution: | 1. Departamento de Ingeniería Civil, Escuela Politécnica Superior, Universidad de Alicante, P.O. Box 99, 03080, Alicante, Spain 2. Unidad Asociada de investigación IGME-UA de movimientos del terreno mediante interferometría radar (UNIRAD), Universidad de Alicante, P.O. Box 99, 03080, Alicante, Spain 3. INDRA Espacio, Mar Egeo 4, Pol. Industrial no 1, San Fernando de Henares, 28830, Madrid, Spain 4. Geohazards Remote Sensing Laboratory, Grupo de Riesgos Geológicos, Instituto Geológico y Minero de Espa?a, Ríos Rosas 23, 28003, Madrid, Spain 5. Institut Geològic de Catalunya, Balmes 209-211, Barcelona, Spain 6. Remote Sensing Lab, Departament de Teoria del Senyal I Comunicacions, Universitat Politècnica de Catalunya, Campus Nord Ed. D3, Jordi Girona 1-3, 08034, Barcelona, Spain 7. Departamento de Física, Ingeniería de Sistemas y Teoría de la Se?al (DFISTS), Escuela Politécnica Superior, Universidad de Alicante, P.O. Box 99, 03080, Alicante, Spain 8. Department of Earth Sciences, University of Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain 9. Department of Earth Sciences, University of Western Ontario, Biological and Geological Sciences Building, London, ON, N6A 5B7, Canada 10. Institute of Geosciences (CSIC-UCM), Facultad de Ciencias Matemáticas, Plaza de Ciencias 3, 28040, Madrid, Spain 14. German Aerospace Center (DLR), Remote Sensing Technology Institute, Oberpfaffenhofen, 82234, We?ling, Germany 11. Altamira Information, Còrsega 381-387, 08037, Barcelona, Spain 12. Estación Experimental de Aula Dei (EEAD-CSIC), P.O. Box 13034, 50080, Zaragoza, Spain 13. Institut Cartografic de Catalunya, Balmes 209-211, Barcelona, Spain |
| Abstract: | Subsidence related to multiple natural and human-induced processes affects an increasing number of areas worldwide. Although this phenomenon may involve surface deformation with 3D displacement components, negative vertical movement, either progressive or episodic, tends to dominate. Over the last decades, differential SAR interferometry (DInSAR) has become a very useful remote sensing tool for accurately measuring the spatial and temporal evolution of surface displacements over broad areas. This work discusses the main advantages and limitations of addressing active subsidence phenomena by means of DInSAR techniques from an end-user point of view. Special attention is paid to the spatial and temporal resolution, the precision of the measurements, and the usefulness of the data. The presented analysis is focused on DInSAR results exploitation of various ground subsidence phenomena (groundwater withdrawal, soil compaction, mining subsidence, evaporite dissolution subsidence, and volcanic deformation) with different displacement patterns in a selection of subsidence areas in Spain. Finally, a cost comparative study is performed for the different techniques applied. |
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