Results 71 to 80 of about 120,225 (320)

Dynamic Boundaries of Antarctic Active Subglacial Lakes Reveal Underestimated Water Volume Change and Overestimated Lakebed Active Area

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract This study revisited 158 documented active subglacial lakes across Antarctica, applying a height‐change anomaly delineation algorithm to CryoSat‐2 and ICESat‐2 satellite altimetry data to assemble a 14.75‐year (2010.5–2025.25) time series of active subglacial lake dynamics.
W. Sauthoff, M. R. Siegfried, R. A. Venturelli, B. E. Smith   +3 more
wiley   +1 more source

Polarimetric Calibration for Ground-based Synthetic Aperture Radar based on Point Target Approach

Jurnal Elkomika
ABSTRAK Kalibrasi polarimetri (PolCal) dari citra radar aperture sintetis berbasis darat (GB SAR) sangat penting dalam aplikasi analisis spasial empiris.
NURUL CHASANAH, DADANG GUNAWAN, FAROHAJI KURNIAWAN, AGUS WIYONO, JEFRI ABNER, BAMBANG SETIADI   +5 more
doaj   +1 more source

Synthetic aperture radar images of ocean waves, theories of imaging physics and experimental tests [PDF]

, 1984
The physical mechanism for the synthetic Aperture Radar (SAR) imaging of ocean waves is investigated through the use of analytical models. The models are tested by comparison with data sets from the SEASAT mission and airborne SAR's.
Durden, S. L., Napolitano, D. A., Smith, M. P., Vesecky, J. F.   +3 more
core   +1 more source

Supershear Transitions and Bilateral Asymmetric Rupture of the 2025 Sagaing (Myanmar) Earthquake Revealed by Geodetic and Seismic Observations

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The Sagaing Fault (SF) accommodates major plate motion in Myanmar, yet large earthquakes along it have rarely been captured by modern geodetic and seismic observations. The 2025 Sagaing earthquake generated an exceptionally long rupture (∼535 km), offering a rare opportunity to investigate rupture dynamics along continental transform fault. We
Zhenjiang Liu, Jyr‐Ching Hu, Zhenhong Li, Chuang Song, Yi Chen, Chen Yu, Jiatong Wang, Xuesong Zhang, Jianbing Peng   +8 more
wiley   +1 more source

Advanced Unsupervised Classification Methods to Detect Anomalies on Earthen Levees Using Polarimetric SAR Imagery

Sensors, 2016
Fully polarimetric Synthetic Aperture Radar (polSAR) data analysis has wide applications for terrain and ground cover classification. The dynamics of surface and subsurface water events can lead to slope instability resulting in slough slides on earthen ...
Ramakalavathi Marapareddy, James V. Aanstoos, Nicolas H. Younan   +2 more
doaj   +1 more source

Characterization of Crustal Deformation During the May 2021 Nyiragongo Eruption Using InSAR and GNSS Data

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract We analyze Interferometric Synthetic Aperture Radar (InSAR) and Global Navigation Satellite System (GNSS) data to characterize ground deformation and dike opening associated with the May 2021 Nyiragongo eruption. Despite documented eruptions in 1977 and 2002, Nyiragongo's magmatic system and its interaction with regional rifting remain poorly ...
D. Murekezi, A. Newman, C. Wauthier, C. J. Ebinger, P. Lundgren, J. Gonzalez Santana, T. Niyitegeka, G. Nyandwi, T. Habiyakare, J. Uwiduhaye   +9 more
wiley   +1 more source

Exploring Distributed Scatterers Interferometric Synthetic Aperture Radar Attributes for Synthetic Aperture Radar Image Classification

Remote Sensing
Land cover classification of Synthetic Aperture Radar (SAR) imagery is a significant research direction in SAR image interpretation. However, due to the unique imaging methodology of SAR, interpreting SAR images presents numerous challenges, and land ...
Mingxuan Wei, Yuzhou Liu, Chuanhua Zhu, Chisheng Wang   +3 more
doaj   +1 more source

A Fast Analytical Model for the Complete Radial Structure of Tropical Cyclone Low‐Level Wind Field

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract A tropical cyclone (TC) can generally be divided into three regions: inner core with vigorous convection, intermediate region with intermittent convection, and far outer region with less convective activity. The different physics in these three regions suggest correspondingly different wind structure models. In this study, we combine the inner‐
Dandan Tao, Robert G. Nystrom, Daniel R. Chavas, Arthur Avenas   +3 more
wiley   +1 more source

Radar imaging [PDF]

, 2013
The article of record as published may be found at http://dx.doi.org/1088/0266-5611/29/5/050301Because of their ability to operate without regard to day, night or weather conditions, radar systems are ubiquitous in remote sensing operations and are used
Borden, Brett, Cheney, Margaret
core   +1 more source

Using Sentinel‐1 and Sentinel‐2 to assess the role of soil water content and vegetation cover in mitigating wind erosion in cultivated organic soil

Vadose Zone Journal, Volume 25, Issue 1, January/February 2026.
Abstract Wind erosion is a major threat to organic soils under intensive agriculture, reducing their productivity and long‐term sustainability. Up to 2.5 cm of soil can be lost in a single storm. This study examined how soil water content and vegetation cover influence wind erosion in cultivated organic soils of the Montérégie region, Quebec, using ...
Saba Daeichin, Jean Caron, Jacynthe Dessureault‐Rompré, Soumaila Kanga Idé, Diane Bulot   +4 more
wiley   +1 more source