Results 61 to 70 of about 2,171 (218)

Imaging the Shallow Structure Beneath Askja Volcano, Iceland, With Ambient Noise Tomography

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Askja is a large central volcano in the Northern Volcanic Zone (NVZ) of Iceland which last erupted effusively in 1961 and subsequently experienced steady deflation from the 1970s until August 2021, when GPS and InSAR measurements confirmed that it had begun re‐inflating.
Joseph Fone, Tom Winder, Nicholas Rawlinson, Robert White, Bryndís Brandsdóttir, Heidi Soosalu   +5 more
wiley   +1 more source

The Sea Surface Height Spectrum of Internal Waves

Journal of Geophysical Research: Oceans, Volume 130, Issue 12, December 2025.
Abstract Internal waves and geostrophic motions contribute to sea surface height (SSH) variability at scales order 100 km and smaller. Although geostrophic motions have a well‐defined contribution in SSH, the internal wave contribution is complex and small enough to be confounded with noise.
S. M. Soares, S. T. Gille, T. K. Chereskin, M. Passaro   +3 more
wiley   +1 more source

Resolution and Error Constraints of Topographic Measurements for Accurate Lava Flow Forecasting

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract The main parameters required to forecast lava flows are the eruption effusion rate, the lava viscosity, and the pre‐eruption topography. We focus on how the spatiotemporal resolution and vertical errors of topographic measurements affect lava flow forecasts.
Alberto Roman, Paul Lundgren
wiley   +1 more source

High Resolution Full-Aperture ISAR Processing through Modified Doppler History Based Motion Compensation

Sensors, 2017
A high resolution inverse synthetic aperture radar (ISAR) technique is presented using modified Doppler history based motion compensation. To this purpose, a novel wideband ISAR system is developed that accommodates parametric processing over extended ...
Jung-Hwan Song, Kee-Woong Lee, Woo-Kyung Lee, Chul-Ho Jung   +3 more
doaj   +1 more source

Multi‐layer root zone soil moisture estimation using field and remote sensing data fusion with machine learning in semi‐arid croplands

Vadose Zone Journal, Volume 24, Issue 6, November/December 2025.
Abstract This study aims to estimate multi‐layer soil moisture (SM) in 30‐cm increments up to 180 cm by integrating multimodal sub‐field and remote sensing data and applying machine learning algorithms. PlanetScope (optical sensor) data, climatic variables, and in situ soil properties were used as input features to estimate SM at 3‐m spatial resolution.
Manoj Lamichhane, Sushant Mehan, Kyle R. Mankin   +2 more
wiley   +1 more source

GLRT‐based detection of targets composed of distributed scattering centres

IET Radar, Sonar & Navigation
Attributed scattering problems have been found to be helpful in inverse synthetic aperture radar (ISAR) imaging and target recognition problems. In this model, the scattering centres are divided into two categories: localised and distributed.
Amir Mohammad Hatami, Seyyed Mohammad Karbasi, Mohammad Mahdi Nayebi   +2 more
doaj   +1 more source

Modeling the Burden of Extreme Weather Events in a Large Network of International HIV Care Cohorts

GeoHealth, Volume 9, Issue 11, November 2025.
Abstract Extreme weather events (EWEs) continue to threaten the health and well‐being of populations across the globe. However, risk from drought and floods is not evenly distributed spatially nor are all populations equally at risk for poor health outcomes.
Sophia D. Arabadjis, Frank Davenport, Ana Maria Vicedo Cabrera, Zachary Shahn, Ellen Brazier, Andrew Maroko, Avantika Srivastava, Gad Murenzi, Timothy John Dizon, Keri N. Althoff, Antoine Jaquet, Aggrey S. Semeere, Yanink Caro Vega, Mark K. U. Pasayan, Sheri D. Weiser, Denis Nash   +15 more
wiley   +1 more source

Coherent compensation and high‐resolution technology of multi‐band inverse synthetic aperture radar fusion imaging [PDF]

, 2021
Xiaoxiu Zhu, Liu Li-min, Baofeng Guo, Wenhua Hu, Juntao Ma, Lin Shi   +5 more
openalex   +1 more source

Complex-valued interferometric inverse synthetic aperture radar image compression base on compressed sensing

The Journal of Engineering, 2014
Complex-valued interferometric inverse synthetic aperture radar (InISAR) image compression is discussed in this study. The target scene has its continuity and is compressible.
Liechen Li, Daojing Li, Bo Liu, Qingjuan Zhang   +3 more
doaj   +1 more source

High‐resolution inverse synthetic aperture radar imaging of satellites in space

IET Radar, Sonar & Navigation
In view of the increasing number of space objects, comprehensive high‐quality space surveillance becomes ever more important. Radar is a powerful tool that, in addition to detection and tracking of objects, also enables spatially high‐resolution imaging ...
Simon Anger, Matthias Jirousek, Stephan Dill, Timo Kempf, Markus Peichl   +4 more
doaj   +1 more source