Results 71 to 80 of about 63,432 (250)

Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract After the construction of hydropower station, reservoir impoundment can directly affect the movement status of landslides within the reservoir area. Detecting landslides and revealing the relationship between landslide deformation and driving forces is crucial for reducing the threat of landslide hazards to residents and hydropower station in ...
Fan Wen, Chuang Song, Zhenhong Li, Chen Yu, Bo Chen, Jiantao Du, Zhenjiang Liu, Ying Wen   +7 more
wiley   +1 more source

3D Near-Field Virtual MIMO-SAR Imaging Using FMCW Radar Systems at 77 GHz [PDF]

arXiv, 2022
In this paper, we present 3D high resolution radar imaging at millimeter-Wave (mmWave) frequencies by means of a combination of virtual Multiple Input Multiple Output (MIMO) Frequency Modulated Continuous Wave (FMCW) Radars and Synthetic Aperture Radar (SAR) which results in a compact, low-cost, and high-speed 3D mmWave imagery system with low ...
arxiv  

Continuous Subsidence of Dallol Volcano Caused by Magmatic, Hydrothermal, and Salt Dissolution Processes: Insights From InSAR Observations

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract The Dallol volcano on the axis of the Erta Ale ridge (Afar rift) offers an ideal opportunity to study the interaction between magmatic and hydrothermal processes. Volcanic activity in Dallol has developed in an area below sea level with a salt plain.
Birhan A. Kebede, Carolina Pagli, Derek Keir, Freysteinn Sigmundsson, Alessandro La Rosa, Hua Wang, Elias Lewi, Snorri Gudbrandsson   +7 more
wiley   +1 more source

Spatiotemporal Patterns of Subsidence and Sea Level Rise in the Samoan Islands 15 Years After the 2009 Samoa‐Tonga Earthquake

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Fifteen years after the 2009 Samoa‐Tonga earthquake, rates of subsidence on the Samoan Islands remain elevated compared with pre‐earthquake levels. Coastal flooding has become a regular occurrence, increasing coastal erosion, risk of saltwater intrusion in freshwater aquifers, and threats to critical infrastructure.
Stacey A. Huang, Jeanne M. Sauber, Shin‐Chan Han, Richard Ray, Eric Fielding   +4 more
wiley   +1 more source

Application of Spaceborne Interferometric Synthetic Aperture Radar to Geohazard Monitoring

Leida xuebao, 2020
In recent years, spaceborne Interferometric Synthetic Aperture Radar (InSAR) technology has shown increasing application potential in the field of geohazard monitoring.
YUN Ye, LÜ Xiaolei, FU Xikai, XUE Feiyang   +3 more
doaj   +1 more source

Characterizing Shallow Aseismic Deformation Along the Dead Sea Pull‐Apart Basin Using Geodetic Observations

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract We use creepmeter (CM), Global Navigation Satellite System (GNSS), Interferometric Synthetic Aperture Radar (InSAR) and airborne Light Detection and Ranging (LiDAR) observations to characterize transient aseismic deformation along the central Dead Sea pull‐apart basin, which is located at the southern part of the sinistral Dead Sea Fault (DSF).
Yariv Hamiel, Roger Bilham, Oksana Piatibratova   +2 more
wiley   +1 more source

Forest mapping and monitoring with interferometric synthetic aperture radar (InSAR) [PDF]

Progress in Physical Geography, 2001
A synthetic aperture radar (SAR) is an active sensor transmitting pulses of polarized electromagnetic waves and receiving the backscattered radiation. SAR sensors at different wavelengths and with different polarimetric capabilities are being used in remote sensing of the earth.
openaire   +3 more sources

Characterisation of resident space objects using multistatic interferometric inverse synthetic aperture radar imaging

IET Radar, Sonar & Navigation
This paper illustrates an interferometric inverse synthetic aperture radar based on three‐dimensional imaging and rotational velocity estimation from a multistatic setup with three ground‐based radars with non‐orthogonal baselines.
Manjunath Thindlu Rudrappa, Marcus Albrecht, Peter Knott   +2 more
doaj   +1 more source

Exploitation of SAS interferometric phase statistics for coherent change detection

Electronics Letters, 2023
Coherent change detection (CCD) takes advantage of the interferometric processing of synthetic aperture sonar (SAS) images and enables the detection of small scale changes to the scene between image pairs.
Emma Shouldice, Vincent Myers
doaj   +1 more source

Inferring Eruption Dynamics From Seismometer Tilt: A Case Study of Erebus and Augustine Volcanoes

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Broadband seismometers are sensitive to tilt as a consequence of their design. We used broadband data from Erebus volcano on Ross Island, Antarctica, and Augustine volcano in Lower Cook Inlet, Alaska, to make tilt measurements associated with individual volcanic explosions and investigate the near‐terminal magmatic system configuration of each
M. S. Christoffersen, R. Grapenthin, M. Angarita, R. C. Aster, J. Chaput, P. R. Kyle   +5 more
wiley   +1 more source