Surface Instability Mapping in Alpine Paraglacial Environments Using Sentinel-1 DInSAR Techniques

Jones, Nina; Strozzi, Tazio; Rabatel, Antoine; Ducasse, Etienne; Mouginot, J.

doi:10.1109/jstars.2023.3287285

Cited by 3 publications

(2 citation statements)

References 58 publications

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“…Additionally, D-InSAR technology is developed from InSAR to obtain data for slight deformations of frozen soil, analyze its spatiotemporal deformation characteristics, and monitor changes in the active layer of frozen ground. In addition, the Permanent Scatter Synthetic Aperture Radar Interferometry (PS-InSAR) and Small Baseline Subset Synthetic Aperture Radar Interferometry (SBAS-InSAR) technologies enable the monitoring of the ground surface deformation over vast permafrost areas [131].…”

Section: Frozen Ground 241 Frozen Soilmentioning

confidence: 99%

Remote Sensing and Modeling of the Cryosphere in High Mountain Asia: A Multidisciplinary Review

Ye,

Wang,

Liu

et al. 2024

Remote Sensing

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Over the past decades, the cryosphere has changed significantly in High Mountain Asia (HMA), leading to multiple natural hazards such as rock–ice avalanches, glacier collapse, debris flows, landslides, and glacial lake outburst floods (GLOFs). Monitoring cryosphere change and evaluating its hydrological effects are essential for studying climate change, the hydrological cycle, water resource management, and natural disaster mitigation and prevention. However, knowledge gaps, data uncertainties, and other substantial challenges limit comprehensive research in climate–cryosphere–hydrology–hazard systems. To address this, we provide an up-to-date, comprehensive, multidisciplinary review of remote sensing techniques in cryosphere studies, demonstrating primary methodologies for delineating glaciers and measuring geodetic glacier mass balance change, glacier thickness, glacier motion or ice velocity, snow extent and water equivalent, frozen ground or frozen soil, lake ice, and glacier-related hazards. The principal results and data achievements are summarized, including URL links for available products and related data platforms. We then describe the main challenges for cryosphere monitoring using satellite-based datasets. Among these challenges, the most significant limitations in accurate data inversion from remotely sensed data are attributed to the high uncertainties and inconsistent estimations due to rough terrain, the various techniques employed, data variability across the same regions (e.g., glacier mass balance change, snow depth retrieval, and the active layer thickness of frozen ground), and poor-quality optical images due to cloudy weather. The paucity of ground observations and validations with few long-term, continuous datasets also limits the utilization of satellite-based cryosphere studies and large-scale hydrological models. Lastly, we address potential breakthroughs in future studies, i.e., (1) outlining debris-covered glacier margins explicitly involving glacier areas in rough mountain shadows, (2) developing highly accurate snow depth retrieval methods by establishing a microwave emission model of snowpack in mountainous regions, (3) advancing techniques for subsurface complex freeze–thaw process observations from space, (4) filling knowledge gaps on scattering mechanisms varying with surface features (e.g., lake ice thickness and varying snow features on lake ice), and (5) improving and cross-verifying the data retrieval accuracy by combining different remote sensing techniques and physical models using machine learning methods and assimilation of multiple high-temporal-resolution datasets from multiple platforms. This comprehensive, multidisciplinary review highlights cryospheric studies incorporating spaceborne observations and hydrological models from diversified techniques/methodologies (e.g., multi-spectral optical data with thermal bands, SAR, InSAR, passive microwave, and altimetry), providing a valuable reference for what scientists have achieved in cryosphere change research and its hydrological effects on the Third Pole.

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Section: Frozen Ground 241 Frozen Soilmentioning

confidence: 99%

Remote Sensing and Modeling of the Cryosphere in High Mountain Asia: A Multidisciplinary Review

Ye,

Wang,

Liu

et al. 2024

Remote Sensing

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“…However, more and more evidence is becoming available that changing alpine permafrost conditions may alter the frequency and magnitude of mass movements, may result in an increase in slope instabilities, rockfalls and debris flow activity or even a destabilisation of rock glaciers (Baral et al, 2023;Jones et al, 2023;Noetzli and Phillips, 2019;Patton et al, 2019;Krautblatter et al, 2013;Gruber and Haeberli, 2007;Noetzli et al, 2007). Many mountain (infra)structures such as cable-cars, railways, avalanche barriers, communication and electricity lines, as well as mountain cabins, that are located in high alpine areas, can be affected by changing permafrost conditions.…”

Section: Introductionmentioning

confidence: 99%

Exploring the use of Sentinel-1 to monitor spatial and temporal evolution of permafrost in the Swiss Alps

Reinders,

Verhoeven,

Sartorelli

et al. 2023

Preprint

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Abstract. In this work, we assess the performance of Persistent Scatterer Interferometry (PSI) based on Sentinel-1 data in the Swiss Alps, focusing on the analysis of surface displacement in areas located in permafrost. To this end, we exploit a PSI dataset over Canton Wallis and the recently published permafrost and ground ice map of Switzerland (PGIM). First we evaluate the sensitivity to radar detection of the terrain, given a particular slope distribution and given satellite orbital geometries. We find that 92 % of the areas currently labeled as permafrost satisfy the geometric visibility criteria, which is a necessary but not sufficient condition for detection of ground movement by satellite radar. Second, we analyse the PSI surface velocity and displacement time series observed in Canton Wallis in the period 2015 to 2022. We find that the displacements rates appear to be correlated with the occurrence of permafrost and that there is a significant difference in displacement rates between ice-poor and ice-rich permafrost compared to no-permafrost zones. However, the difference between the surface velocities retrieved in ice-poor permafrost and no-permafrost zones are small and additional information would be needed to discriminate ice-poor permafrost zones.

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Review of SAR imaging geodesy for glacier velocity monitoring

Wen,

Wang

2024

Geodesy and Geodynamics

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Surface Instability Mapping in Alpine Paraglacial Environments Using Sentinel-1 DInSAR Techniques

Cited by 3 publications

References 58 publications

Remote Sensing and Modeling of the Cryosphere in High Mountain Asia: A Multidisciplinary Review

Remote Sensing and Modeling of the Cryosphere in High Mountain Asia: A Multidisciplinary Review

Exploring the use of Sentinel-1 to monitor spatial and temporal evolution of permafrost in the Swiss Alps

Review of SAR imaging geodesy for glacier velocity monitoring

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