Results 111 to 120 of about 200,445 (197)

Mapping the Crustal Thickness of the Andes Using pmP Phases Identified From Adaptive Teleseismic Array Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Crustal thickness (or Moho depth) is a key parameter for many geological and geophysical models. Despite this we have a limited number of measurements, typically from seismic receiver functions, to constrain variations in crustal thickness.
Alice Blackwell, Timothy Craig, Sebastian Rost, Hanna‐Riia Allas   +3 more
wiley   +1 more source

Imaging the Alpine Collision With Seismic Radial Anisotropy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The Alpine region and the adjacent Northern Apennines (NA) and Northern Dinarides record the complex tectonic evolution associated with the collision between the Eurasian and Adriatic plates. We combine Rayleigh and Love surface waves from ambient noise and earthquake data recorded at over 3,300 seismic stations to construct a high‐resolution ...
Henrique Berger Roisenberg, Felix Eckel, Amr El‐Sharkawy, Claudio Rosenberg, Lapo Boschi, Thomas Meier, Fabio Cammarano   +6 more
wiley   +1 more source

Toward a More Physical Representation of Convective Gravity Waves in GFDL’s GCM

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract We implemented in GFDL's global atmospheric model a parameterization for convective gravity waves, which explicitly describes the wave source based on the latent heating rates from the parameterized deep convection. The characteristics of the simulated Quasi‐Biennial Oscillation (QBO) in the equatorial stratosphere depend on the tunable ...
Pu Lin, M. Joan Alexander, Laura Holt, Martina Bramberger, Lan Luan, Uriel Ramirez, Baoqiang Xiang, David Paynter, Ming Zhao, Zhihong Tan, Huan Guo, Mi Kyung Lee, Vaishali Naik   +12 more
wiley   +1 more source

Digital Beamforming and MIMO SAR: Review and New Concepts [PDF]

, 2012
Spaceborne Synthetic Aperture Radar (SAR) is a unique tool for large scale Earth observation, but the current generation of SAR sensors suffers from some fundamental limitations with regard to their imaging and mapping capabilities.
Villano, Michelangelo, Patyuchenko, Anton, Laskowski, Piotr, Huber, Sigurd, Bordoni, Federica, Moreira, Alberto, Younis, Marwan, Krieger, Gerhard, Kim, Junghyo, Rommel, Tobias, Lopez-Dekker, Paco   +10 more
core  

Obtaining Local‐Tie Vectors From Short‐Baseline Interferometry Between Legacy S/X and VGOS Telescopes at Ny‐Ålesund

Radio Science, Volume 61, Issue 9, September 2026.
Abstract With the ongoing transition for geodetic Very Long Baseline Interferometry (VLBI) from the use of legacy S/X telescopes to the VLBI Global Observing System (VGOS), it is necessary to connect the new VGOS network to the existing legacy S/X telescopes.
Rebekka Handirk, Eskil Varenius, Tobias Nilsson, Karine Le Bail, Rubén Bolaño González, Susana Garcia‐Espada, Axel Meldahl, Thomas Gasmoe, Silje Agnes Grøslie Wennesland, Oddvar Bråvold Tangen, Halfdan Pascal Kierulf   +10 more
wiley   +1 more source

Multi-Channel ScanSAR for High-Resolution Ultra-Wide-Swath Imaging [PDF]

, 2008
Multi-channel radar systems enable to overcome the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth ...
Moreira, Alberto, Gebert, Nicolas, Krieger, Gerhard   +2 more
core  

Interferometric Synthetic Aperture Radar (InSAR) for Monitoring Seasonal Snow

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract Interferometric Synthetic Aperture Radar (InSAR) offers a potential pathway for measuring seasonal snow water equivalent (SWE) and snow depth at spatial and temporal scales needed for basin‐scale hydrology. First proposed for seasonal snow more than 25 years ago, InSAR uses repeat‐pass radar phase differences to estimate changes in SWE or ...
Jack Tarricone, Ross T. Palomaki, Randall Bonnell, Zachary Hoppinen, Shadi Oveisgharan, Jorge Jorge Ruiz, Hans‐Peter Marshall, Elias J. Deeb, Carrie Vuyovich, Steven A. Margulis, Simon Yueh, Richard R. Forster, Ryan W. Webb, Daniel McGrath, Juha Lemmetyinen, Kelly Elder, Rashmi Shah, Xiaolan Xu   +17 more
wiley   +1 more source

Research on the direction estimation algorithm of vector hydrophones under near-field and Far-field Reflecting Boundary

International Journal of Metrology and Quality Engineering
To address the impact of reflection boundaries and port and starboard ambiguity on passive sonar positioning, a method of vector hydrophone hybrid source positioning under different reflection boundaries is proposed. When the reflection boundary is close
Shang Zhenzhen, Zhang Xiaoyong, Kou Hairong, Yang Libo, Zhang Guojun   +4 more
doaj   +1 more source

Investigating Layered Cratonic Lithosphere in the Fennoscandian Shield

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Cold, thick, and chemically depleted lithosphere with high seismic velocity and low attenuation characterizes continental cratons. However, discrepancies between xenolith‐based thermal constraints and those inferred from surface‐wave seismic models, together with the widespread observation of mid‐lithosphere discontinuities, challenge the ...
Yiran Huang, Colleen A. Dalton, Karen M. Fischer   +2 more
wiley   +1 more source

Analytical Modeling of Hot Ion Interchange Injections in Saturn's Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Cassini's CHarge Energy Mass Spectrometer (CHEMS) instrument collected energetic plasma data from 2004 to 2017, including hundreds of observations of small‐scale nearly dispersionless “local” injection events into the inner magnetosphere. This study assesses whether these interchange‐like injections are a channel‐like structure still connected
Michael W. Liemohn, Jenna Syposs, Abigail R. Azari, Erika Y. Hathaway, Alexandra K. Roosnovo   +4 more
wiley   +1 more source