Results 61 to 70 of about 4,303 (208)

Lava Tube System Development Defined by Multispectral Imaging and InSAR: The Case of the 2024 Eruption of Fernandina Volcano (Galápagos)

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract Lava tubes are subsurface conduits within a lava flow that feed its advance. Lava tube detection is important to understand lava flow dynamics and to mitigate geohazards. Here we use InSAR‐derived surface motion data, in combination with shortwave and thermal infrared imagery, to delineate a ∼14 km long lava tube system at Fernandina volcano ...
Alexis Hrysiewicz, Peter C. LaFemina, Andrew Bell, Federico Galetto, Silvia Vallejo, Benjamin Bernard, Eoghan P. Holohan   +6 more
wiley   +1 more source

Unveiling the First Impressions of the Wide‐Swath Altimetry SWOT Mission Over the Ganga River, India

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The Surface Water and Ocean Topography (SWOT) mission offers novel global observations of river hydrodynamics, yet its performance across varied river morphologies remains understudied. We evaluate SWOT node and raster products over a ∼210 km stretch of the Ganga River, India, during the fast‐sampling phase, using GNSS‐based continuous ...
Pankaj R. Dhote, Ankit Agarwal, Adrien Paris, Gaurish Singhal, Praveen K. Thakur, Hind Oubanas, Daniel M. Moreira, Laetitia Gal, Vaibhav Garg, Pramod Kumar, Raghavendra P. Singh, Stephane Calmant   +11 more
wiley   +1 more source

Role of Sparsely Glacierized Basins and Groundwater in Semiarid Andes Periglacial Headwaters

Hydrological Processes, Volume 39, Issue 10, October 2025.
This study highlights for the first time the role of the Andean low‐glacierized headwater basin in providing significant water flow to the outlet discharge (20%–30%) with relatively long residence times (several decades). It can be explained by unknown permafrost bodies, which must be better characterized to manage water in a changing climate in ...
Rémi Valois, Gonzalo Navarro, Shelley MacDonell, Solène Buvat, Giulia de Pasquale, Vincent Marc, Marina Gillon, Esteban Saez Robert, Ayon Garcia, Christopher Ulloa, Julien Dupont, Milanka Babic, Eric Sproles, Jules Burgat, Etienne Bresciani   +14 more
wiley   +1 more source

Multi‐scale geophysical imaging of neotectonic fault activity in the northern Upper Rhine Graben, Germany

Near Surface Geophysics, Volume 23, Issue 5, Page 483-501, October 2025.
Abstract A comprehensive multi‐method geophysical strategy is used to investigate two faults in the Northern Upper Rhine Graben. Combining industrial 3D seismic data with our own 2D P‐ and S‐wave seismic, electrical resistivity tomography (ERT) and ground‐penetrating radar (GPR), we created comprehensive subsurface images of the faults. 3D seismic data
Johannes Mair, Andreas Henk, Hermann Buness, Rouwen Lehné, David C. Tanner   +4 more
wiley   +1 more source

Experimental results of maritime moving target detection based on passive bistatic radar using non-cooperative radar illuminators

The Journal of Engineering, 2019
A signal processing method of passive bistatic radar using non-cooperative pulse radar illuminators is proposed. The proposed method estimates unknown parameters of transmitting radar signal from direct-path signal, and uses estimated parameters for ...
Song Jie, Cai Fu-qing, Zhang Cai-sheng, He You   +3 more
doaj   +1 more source

Coseismic Vertical Displacement for a Shallow Thrust Earthquake From EarthDEM Data

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract Coseismic vertical displacements are important observations that help improve our understanding of fault mechanisms and how earthquakes alter landscapes. It has been a challenge to quantify long‐wavelength topographic changes for thrust earthquakes using optical satellite imagery, as most recent studies focus on strike‐slip earthquakes that ...
Chunli Dai, Thomas Casteel, Jeffrey T. Freymueller, Ian M. Howat, Erik Husby   +4 more
wiley   +1 more source

Signal Processing of Coast-Ship Bistatic High-Frequency Surface-Wave Radar Using One-Bit Quantized Measurement [PDF]

, 2020
Bingfan Liu, Baixiao Chen, Minglei Yang
openalex   +1 more source

Microwave‐Driven Dielectric‐Magnetic Regulation of Graphite@α‐MnO2 Toward Enhanced Electromagnetic Wave Absorption

Advanced Science, Volume 12, Issue 34, September 11, 2025.
This study presents a microwave‐activated composite integrating expanded graphite with α‐MnO2 nanowires, engineered to synergistically optimize dielectric and magnetic properties. The innovative microwave‐driven process enables rapid structural transformation, yielding ultrathin, scalable electromagnetic wave‐absorbing films.
Junyu Lu, Lei Xu, Cheng Xie, Chang Zhang, Zhaohui Han, Yiyao Ren, Renchao Che   +6 more
wiley   +1 more source

Space-time adaptive detection for bistatic MIMO system under covariance matrix persymmetry and symmetric spectrum

The Journal of Engineering, 2019
Space-time adaptive detection (STAD) is an important research aspect of the bistatic multiple-input multiple-output (MIMO) radar system. The signal and clutter space-time models of the bistatic MIMO radar are described in this study. The knowledge-aided (
Sheng Yan, Chengpeng Hao, Da Xu, Bo Shi
doaj   +1 more source

Search-Free DOD, DOA and Range Estimation for Bistatic FDA-MIMO Radar

IEEE Access, 2018
Frequency diverse array (FDA) is an emerging technology, the hybrid of FDA and multiple-input-multiple-output (FDA-MIMO) under monostatic scenarios has received much attention in recent years.
Can Cui, Jian Xu, Ronghua Gui, Wen-Qin Wang, Wen Wu   +4 more
doaj   +1 more source