Complementariedad de la interferometría radar de satélite y la observación GNSSAplicaciones en ingeniería, peligros naturales y antrópicos, y estudio de la erupción de la Palma en 2021

Résumé

Surface deformation can be the consequence of different processes, both of natural origin (e.g. volcanic eruptions, earthquakes, or landslides) and of anthropogenic (e.g. injection or extraction of fluids or as a result of mining). The rapid growth of the world's population, as well as its increased demand for natural resources, inevitably makes society more vulnerable to these hazards.The correct detection and monitoring of these surface deformation phenomena are essential to understand and characterize the mechanisms that cause them allowing to study their time evolution. It helps decision making during crisis as also to improve the sustainable management of natural resources There are currently two widely used geodetic techniques for surface deformation monitoring: Global Navigation Satellite Systems (GNSS) and Interferometric Synthetic Aperture Radar (InSAR) techniques. GNSS techniques enable precise positioning on the earth's surface, providing information on the three components of displacement (x, y, z) with high temporal resolution but typically limited spatial coverage. InSAR techniques allow obtaining the surface displacement in a one-dimensional vector, known as Line of Sight (LOS), with high precision and spatial coverage but lower temporal resolution...