Results 51 to 60 of about 182 (145)

Satellite Geodesy Reveals Shallow, Transient Magma Intrusions at Sotará Volcano, Colombia

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Sotará is a little‐known andesitic‐dacitic stratovolcano in southwestern Colombia. Although there are no recorded historical eruptions, the volcano shows clear evidence of geothermal activity, deformation, and volcano‐tectonic seismicity. Its remote location and rugged terrain pose challenges for access and routine monitoring.
Rosa Alpala, Jorge Alpala, Patricia A. Rosell, Leonardo D. Euillades, Pablo A. Euillades, Maurizio Battaglia   +5 more
wiley   +1 more source

Comparative Analysis of Tropospheric Correction Methods for Ground Deformation Monitoring over Mining Area with DS-InSAR

Remote Sensing
In recent years, differential synthetic aperture radar interferometry (DInSAR) has been widely used to monitor ground deformation induced by mineral resource exploitation.
Yajie Meng, Feng Zhao, Yunjia Wang, Liyong Li, Bujun Hu, Xianlong Xu, Rui Wang, Yifei Wei, Kesheng Huang, Ning Chen, Shiying Bu, Lin Zhu   +11 more
doaj   +1 more source

A joint InSAR-GNSS workflow for correction and selection of interferograms to estimate high-resolution interseismic deformations

Satellite Navigation, 2023
Knowledge of the spatial distribution of interseismic deformations is essential to better understand earthquake cycles. The existing methods for improving the reliability of the obtained deformations often rely on visual inspection and prior model ...
Hongzhi Liu, Lei Xie, Guoqiang Zhao, Eslam Ali, Wenbin Xu   +4 more
doaj   +1 more source

Range‐Parallel Extension of the Andes in the 2020 Mw 5.7 Humahuaca Earthquake

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Normal‐faulting earthquakes in mountain ranges provide important constraints on the dynamics of mountain building. To date, well‐documented examples of range‐parallel extension come primarily from the Tibetan Plateau, limiting our ability to test different models for its cause.
Simon Orrego, Juliet Biggs, Sam Wimpenny, Yasser Maghsoudi   +3 more
wiley   +1 more source

Magma Ascent and Accumulation Drives Surface Deformation and Ring Fault Seismicity Preceding the 2024 Eruption of Fernandina Volcano, Galápagos Islands

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract At caldera volcanoes, ring faults can play a key role in controlling the dynamics of unrest and patterns of associated surface deformation and seismicity. Here we show that the March 2024 eruption of Fernandina volcano was preceded by a 2.5‐year episode of magma accumulation, driving surface uplift and asymmetric seismicity on a ring fault ...
Andrew F. Bell, Susanna K. Ebmeier, Stephen Hernandez, Eliot Eaton, Xuesong Zhang, Peter LaFemina, Christopher Bean, Mario Ruiz   +7 more
wiley   +1 more source

Coseismic Kinematics and Early Afterslip Evolution of the 2025 Mw ${\mathbf{M}}_{\mathbf{w}}$ 7.1 Dingri Earthquake (Southern Tibet) From Space Geodesy

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract The 2025 Mw ${\mathrm{M}}_{\mathrm{w}}$ 7.1 Dingri earthquake is a large normal‐faulting event within the Southern Tibet Rift System. We use space‐borne radar interferometry to investigate both coseismic rupture and ∼3‐month early afterslip. Results show that this event ruptured a west‐dipping (48°) fault, exhibiting a predominant normal dip ...
Lijia He, Guangcai Feng, Hongbo Jiang, Wenxin Wang, Xiaoge Liu, Yuedong Wang, Sang‐Ho Yun   +6 more
wiley   +1 more source

North‐South Shear Along the West‐Lut Fault, Iran, Imaged From Burst Overlap InSAR

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract High‐resolution geodetic measurements of crustal deformation from InSAR provide crucial constraints on a region's tectonics, geodynamics, and seismic hazard. However, space‐based InSAR usually only provides good constraints on horizontal displacement in the east‐west direction, with the north‐south component typically provided by low ...
Pawan Piromthong, Andrew Hooper, John R. Elliott   +2 more
wiley   +1 more source

Widespread Extent of Irrecoverable Aquifer Depletion Revealed by Country‐Wide Analysis of Land Surface Subsidence Hazard in Iran

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 9, September 2025.
Abstract Ongoing depletion of Iran's groundwater, driven by human extraction, has contributed to 106 incidences of basin‐scale, land‐surface subsidence covering 31,400 km2 (> ${ >} $10 mm/yr, 1.9%) of the country. We use Sentinel‐1 Interferometric Synthetic Aperture Radar time series to map and analyze, for the first time, surface velocities within ...
Jessica A. Payne, A. R. Watson, Y. Maghsoudi, S. K. Ebmeier, R. Rigby, M. Lazecký, M. Thomas, J. R. Elliott   +7 more
wiley   +1 more source

Implanter des guichets d’accès aux clientèles sans médecin de famille à travers le Québec

Health Reform Observer - Observatoire des Réformes de Santé, 2014
En 2008, le gouvernement du Québec a mandaté les quatre-vingt-quatorze centres de santé et des services sociaux (CSSS) d’introduire un guichet d’accès aux « clientèles orphelines » (GACO; le terme de clientèle orpheline désigne les patients n’ayant pas ...
Mylaine Breton, Jennissa Gagne, Fortuné Gankpe   +2 more
doaj  

InSAR-derived seasonal subsidence reflects spatial soil moisture patterns in Arctic lowland permafrost regions [PDF]

The Cryosphere
The identification of spatial soil moisture patterns is of high importance for various applications in high-latitude permafrost regions but challenging with common remote sensing approaches due to high landscape heterogeneity.
B. Widhalm, B. Widhalm, A. Bartsch, A. Bartsch, T. Strozzi, N. Jones, A. Khomutov, E. Babkina, M. Leibman, R. Khairullin, M. Göckede, H. Bergstedt, H. Bergstedt, C. von Baeckmann, C. von Baeckmann, X. Muri, X. Muri   +16 more
doaj   +1 more source