Results 31 to 40 of about 1,298 (174)

Fault‐Controlled Plumbing System Beneath Lipari Volcanic Island Revealed by Seismic Matrix Imaging

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Lipari Island hosts an active magmatic–hydrothermal system, but its deep plumbing architecture remains poorly resolved due to strong seismic scattering. We apply passive seismic matrix imaging to public vertical‐component cross‐correlation functions from the dense 2018 Lipari nodal array, recovering relative‐reflectivity structures to ∼10 km ...
Jia Wei, Qiancheng Liu, Ling Chen
wiley   +1 more source

Comparison between geoelectric and electromagnetic sounding responses in volcanic areas

open access: yesAnnals of Geophysics, 1997
The structure of active and inactive volcanoes can be explored with electric and electromagnetic surveys. We test the actual applicability of prospecting methods that employ both stationary and time-varying fields, using mathematical models both for ...
L. Alfano, M. Giudici
doaj   +1 more source

Melt‐Regulated Crustal Kinematics in the Pamir, NW Tibetan Plateau: Insights From Surface‐Wave Tomography

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract The Pamir, located at the northwestern margin of the Tibetan Plateau, is undergoing E–W extension within its interior, accommodated by micro‐block motions along major fault systems; however, the mechanisms governing this modern block kinematics remain elusive.
Bingfeng Zhang   +3 more
wiley   +1 more source

Plume‐Fed Magmatic Fluids Weakened Crust and Promoted a Large Intraplate Earthquake in Northern Hainan (South China)

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images reveal two shallow low‐velocity zones extending to ∼10 km depth: a stronger ...
Lue Yang   +9 more
wiley   +1 more source

Research on the three-dimensional electrical structure of the shallow portion of the southern segment of the Red River Fault (Dazhai Village)

open access: yesEarth and Planetary Physics
No earthquake of magnitude six or greater has been recorded historically in the southern segment of the Red River Fault (RRF). This absence constitutes a significant seismic gap, suggesting a risk of future strong earthquakes.
Jiong Zhang   +6 more
doaj   +1 more source

The electrical structure of the central Pacific upper mantle constrained by the NoMelt experiment

open access: yesGeochemistry, Geophysics, Geosystems, 2015
The NoMelt experiment imaged the mantle beneath 70 Ma Pacific seafloor with the aim of understanding the transition from the lithosphere to the underlying convecting asthenosphere.
Emily Sarafian   +7 more
doaj   +1 more source

Multiscale Geoelectrical Properties of the Rochechouart Impact Structure, France

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The 205 Ma Rochechouart impact structure (France) is characterized by various impactite formations overlying the Hercynian crystalline basement. New constraints from downhole logging and surface electrical resistivity measurements along >100 m long ...
Yoann Quesnel   +6 more
doaj   +1 more source

Toward an Improved Understanding of the Antarctic Coastal Zone and Its Contribution to Future Global Sea Level

open access: yesReviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract Understanding the coastal zone of the Antarctic Ice Sheet (AIS), where it interacts with the Southern Ocean and warmer air masses, is crucial for predicting Antarctica's influence on the global climate and sea level. This region has multiple tipping mechanisms that could trigger large, rapid, and potentially irreversible changes in the AIS ...
Kenichi Matsuoka   +79 more
wiley   +1 more source

Self-potential, geoelectric and magnetotelluric studies in Italian active volcanic areas

open access: yesAnnals of Geophysics, 1997
We present the results of self-potential, geoelectric and magnetotelluric studies in Italian active volcanic areas as essential contributions both to structural modeling and to hazard evaluation. On Mt. Etna and Mt.
A. Siniscalchi   +6 more
doaj   +1 more source

Geophysical Investigation of a Thermal Field in Abu Dhabi, United Arab Emirates

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract In the Abu Dhabi Emirate, near Madinat Zayed and Liwa, studies have identified high geothermal gradients and high‐heat‐flow areas. Assessing the geothermal potential in this region requires a detailed mapping of subsurface geological formations and their thermal properties.
Hakim Saibi   +3 more
wiley   +1 more source

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