A5020531701- Synthetic Aperture Radar (SAR) Applications and Techniques
- Cryospheric studies and observations
- Advanced SAR Imaging Techniques
- Soil Moisture and Remote Sensing
- Geological and Geophysical Studies Worldwide
- Landslides and related hazards
- Geomechanics and Mining Engineering
- Geoscience and Mining Technology
- earthquake and tectonic studies
- Geophysical Methods and Applications
- Geological and Tectonic Studies in Latin America
- Mineral Processing and Grinding
- Geology and Paleoclimatology Research
- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Satellite Image Processing and Photogrammetry
- Geological Modeling and Analysis
- Geotechnical and Geomechanical Engineering
- Mining Techniques and Economics
- Geophysics and Gravity Measurements
- Arctic and Antarctic ice dynamics
- Tunneling and Rock Mechanics
Instituto de Geociencias
2023-2025
Universitat Politècnica de Catalunya
2017-2022
Esteve (Spain)
2022
China University of Mining and Technology
2011
Sentinel-1 data has been widely employed for monitoring large-scale ground deformation with multi-temporal InSAR (MTI). The development of polarimetric MTI (PolMTI) methods made it possible to combine both VV and VH channels better data. However, traditional high-efficiency PolMTI cannot adaptively optimize persistent scatterer (PS) distributed (DS), while existing adaptive have high computational burdens. To address these challenges, we propose an coherency matrix decomposition method...
La Palma island is one of the highest potential risks in volcanic archipelago Canaries and therefore it important to carry out an in-depth study define its state unrest. This has been accomplished through use satellite radar observations original state-of-the-art interpretation technique. Here we show detection onset unrest on island, most likely decades before a eruption. We current evolution seeing spatial temporal changing nature activity at this potentially dangerous volcano...
Differential SAR Interferometry (DInSAR) has proven its unprecedented ability and merits of monitoring ground deformation on a large scale with centimeter to millimeter accuracy. However, atmospheric artifacts due spatial temporal variations the state often affect reliability accuracy results. The commonly-known Atmospheric Phase Screen (APS) appears in interferograms as ghost fringes not related either topography or deformation. artifact mitigation remains one biggest challenges be...
La Palma, Canary Islands, underwent volcanic unrest which culminated in its largest historical eruption. We study this along 2021 using Interferometric Synthetic Aperture Radar (InSAR) and a new improved interpretation methodology, comparing achieved results with the crustal structure. reproduce final phase of Palma unrest, highligthing shallow magma accumulation begins about 3.5 months before eruption volume charactherized by low density fractured rocks. Our modeling, together our pictures...
In recent years, the prolonged exploitation of natural resources has led to depletion reserves in some mining areas, resulting closure mines worldwide. After mine closures, fractured rock masses abandoned cavities undergo weathering and degradation due factors such as stress groundwater, leading reduced strength. This change alters distribution load-bearing capacity within voids, secondary or multiple deformations on surface, which pose significant potential threats surface infrastructure...
Slope stability monitoring is a very important aspect in open pit mining processes, where landslides without warning may cause huge loss of life, injuries and infrastructure damage, interfering with mine planning causing significant increased costs economic losses. monitoring, modeling analysis help to improve the safety activities minimize these effects. For slope many techniques are available, including use prisms, GNSS, total stations, extensometers, inclinometers, infrasound sensors,...
Yuyang mine is located in the semiarid western region of China where, due to serious land subsidence caused by underground coal exploitation, local ecological environment has become more fragile. An advanced interferometric synthetic aperture radar (InSAR) technique, temporarily coherent point InSAR, applied measure surface movements different mining conditions. Fifteen high-resolution TerraSAR-X images acquired between October 2, 2012, and March 27, 2013, were processed generate time-series...
Underground coal fire is a global geological disaster that causes the loss of resources as well environmental pollution. Xinjiang, China, one regions suffering from serious underground fires. The accurate monitoring fires critical for management and extinguishment, many remote sensing-based approaches have been developed over large areas. Among them, multi-temporal interferometric synthetic aperture radar (MT-InSAR) techniques recently employed fires-related ground deformation monitoring....
Mitigating the atmospheric phase delay is one of largest challenges faced by differential synthetic aperture radar (SAR) interferometry community. Recently, many publications have studied correcting stratified tropospheric assuming a linear model between them and topography. However, most these studies not considered effect turbulent artifacts when adjusting to data. In this paper, we present an improved technique that minimizes influence atmosphere in adjustment. proposed algorithm,...
In multitemporal SAR and Polarimetric (Pol-SAR) coherence is a capital parameter to exploit common information between temporal acquisitions. Yet, its use limited high coherences. This article proposes the analysis of low scenarios by introducing reinterpretation coherence. It demonstrated that results from product two terms accounting for coherent radiometric changes, respectively. For coherences, first term presents values, preventing exploitation retrieval. The provided second can be used...
Differential Interferometric Synthetic Aperture Radar (DInSAR), also known as Persistent Scatters Interferometry (PSI), has proved its unprecedented advantages of monitoring ground deformation on large scale with centimeter to millimeter precision in the last two decades. However, reliability and accuracy are often contaminated atmospheric artefacts caused by spatial temporal variations atmosphere. Recent studies revealed can be compensated empirical models, GPS zenith path delay numerical...
Differential Interferometry SAR (DInSAR) is an advanced technique to retrieve ground deformation in the geoscience community. Atmospheric Phase Screen (APS) one of largest challenges limiting application DInSAR especially mountainous areas. In this paper we propose approach based on empirical linear model for compensating stratified atmospheric phase delay differential interferograms. Compared with conventional model, influence turbulent APS taken into consideration our work. With this,...
One of the main applications SAR interferometry is monitoring hazard risks related with urban subsidence and landslide instabilities. The different sensors available offer carrier frequencies, image swaths resolutions. Depending on extension area phenomena to monitor, one particular mode can be more suitable than others. In this paper benefits high-resolution X-band for addressed. selected experimental Staring-Spotlight TerraSAR/TanDEM-X under study El Forn de Canillo (Andorra) that...
La isla de Palma es las mayor riesgo potencial del archipiélago canario, siendo por tanto importante realizar unestudio en profundidad que permita definir su estado actividad volcánica. Esto se ha realizado usando observacionesde radar satélite y una técnica interpretación original última generación. Ambas cosas han permitido detectar elinicio la reactivación volcánica Palma, probablemente décadas antes posible erupción. Suevolución temporal muestra naturaleza cambiante deformación...