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https://doi.org/10.20868/upm.t...
Doctoral thesis . 2025 . Peer-reviewed
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Recolector de Ciencia Abierta, RECOLECTA
Doctoral thesis . 2024
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Applications of multitemporal interferometry SAR (MT-InSAR) in the management of natural and induced geological risks

Authors: García Lanchares, Carlos;

Applications of multitemporal interferometry SAR (MT-InSAR) in the management of natural and induced geological risks

Abstract

The thesis presents a detailed analysis of the use of Multi-temporal Synthetic Aperture Radar Interferometry (MT-InSAR) technology in the management of geological risks in various urban areas of Central America, focusing on three specific cases: Guatemala City, La Palma, and San José. Each of these areas faces unique challenges due to their geology and human activity, making MT-InSAR an indispensable tool for risk assessment and mitigation. In Guatemala City, the study focuses on ground subsidence caused by excessive groundwater extraction. This densely populated and constantly expanding region faces a significant geological risk due to the overexploitation of aquifers, resulting in sinkholes and potential ground collapses. MT-InSAR allows for precise monitoring of these deformations, providing crucial data for urban planning and the implementation of sustainable water management policies. In La Palma, the focus is directed towards recent volcanic activity, particularly along the Cumbre Vieja, has been critically examined. The 2021 eruption, linked to previous volcanic events, highlights the ongoing geological dynamism of La Palma. MT-InSAR technology is used to detect and analyze past and present deformations, facilitating the implementation of prevention measures and early warning systems. Finally, in San José, the research addresses both ground subsidence and seismic activity. Given the location of San José in a high tectonic activity zone, the risks of earthquakes and the consequent ground deformation are of particular concern. The use of MT-InSAR helps to identify potential risk areas and to monitor the structural integrity of the urban environment, improving the disaster response capability. These three case studies demonstrate the versatility and effectiveness of MT-InSAR technology in identifying and managing different types of geological risks. By integrating this technology into risk management policies, authorities can significantly improve the resilience and safety of vulnerable urban areas in Central America. RESUMEN La tesis presenta un análisis detallado del uso de la tecnología de Interferometría de Radar de Apertura Sintética Multitemporal (MT-InSAR) en la gestión de riesgos geológicos en varias áreas urbanas de Centroamérica, enfocándose en tres casos específicos: Ciudad de Guatemala, La Palma y San José. Cada una de estas áreas enfrenta desafíos únicos debido a su geología y actividad humana, haciendo de MT-InSAR una herramienta indispensable para la evaluación y mitigación de riesgos. En Ciudad de Guatemala, el estudio se centra en la subsidencia del suelo causada por la extracción excesiva de agua subterránea. Esta región densamente poblada y en constante expansión enfrenta un riesgo geológico significativo debido a la sobreexplotación de los acuíferos, lo que resulta en la formación de sumideros y posibles colapsos del suelo. MT-InSAR permite un monitoreo preciso de estas deformaciones, proporcionando datos cruciales para la planificación urbana y la implementación de políticas sostenibles de gestión del agua. En La Palma, el enfoque está dirigido hacia la reciente actividad volcánica, particularmente a lo largo de Cumbre Vieja, que ha sido críticamente examinada. La erupción de 2021, vinculada a eventos volcánicos anteriores, resalta el dinamismo geológico continuo de La Palma. La tecnología MT-InSAR se utiliza para detectar y analizar deformaciones pasadas y presentes, facilitando la implementación de medidas de prevención y sistemas de alerta temprana. Finalmente, en San José, la investigación aborda tanto la subsidencia del suelo como la actividad sísmica. Dada la ubicación de San José en una zona de alta actividad tectónica, los riesgos de terremotos y la consecuente deformación del suelo son de particular preocupación. El uso de MT-InSAR ayuda a identificar áreas de riesgo potencial y a monitorear la integridad estructural del entorno urbano, mejorando la capacidad de respuesta ante desastres. Estos tres estudios de caso demuestran la versatilidad y efectividad de la tecnología MT-InSAR en la identificación y gestión de diferentes tipos de riesgos geológicos. Al integrar esta tecnología en las políticas de gestión de riesgos, las autoridades pueden mejorar significativamente la resiliencia y seguridad de las áreas urbanas vulnerables en Centroamérica.

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Spain
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green