Results 51 to 60 of about 845 (148)

Fifty Years Later: Revisiting Viking 2 Seismic Signals Through InSight

AGU Advances, Volume 7, Issue 7, October 2026.
Abstract For nearly 50 years, the origin of the candidate seismic signals recorded by Viking 2 remained unresolved because of limited instrumental sensitivity, onboard observation, data compression, and the absence of Martian seismic context. Here we reconstruct the Viking seismic workflow and reinterpret the two Viking candidate events, recorded on ...
Wanbo Xiao, Jiaqi Li, Yanbin Wang, Andrew Lazarewicz   +3 more
wiley   +1 more source

Full‐Waveform Seismic Tomography of the Upper Mantle Beneath the Arabia‐Eurasia Collision Zone

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Despite being one of the most recent major orogenic events, the timing of the Arabia‐Eurasia collision is still debated. Much of the discrepancy arises due to uncertainties over the amount of continental subduction of the Arabian passive margin and the timing of a hard collision of cratonic Arabian lithosphere with Eurasia.
Edward J. Clennett, Chujie Liu, Stephen P. Grand, Thorsten W. Becker   +3 more
wiley   +1 more source

Analytical models of volcanic ellipsoidal expansion sources

Annals of Geophysics, 2013
Modeling non-double-couple earthquakes and surficial deformation in volcanic and geothermal areas usually involves expansion sources. Given an ensemble of ellipsoidal or tensile expansion sources and double-couple ones, it is straightforward to obtain ...
Antonella Amoruso, Luca Crescentini
doaj   +1 more source

Mantle Transition Zone Constraints on Slab Penetration and Slab‐Edge Mantle Flow Beneath the Kamchatka Peninsula

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Numerous seismic studies have reported the absence of a resolvable subducted slab beneath parts of northern Kamchatka, though the mechanism for this anomaly remains debated. We utilize 1,696 P‐to‐S receiver functions to image the mantle transition zone (MTZ) beneath the Kamchatka Peninsula and surrounding areas. Beneath southwestern Kamchatka,
Muchen Sun, Yangyang Liao, Stephen S. Gao, Kelly H. Liu, Youqiang Yu   +4 more
wiley   +1 more source

Key Parameters for the Ionospheric Detection of Tsunamis From the 29 July 2025 Kamchatka Event

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract It has been demonstrated that tsunamis generate internal gravity waves (GWs) detectable in the ionosphere within 20–60 min after their generation at the ocean surface. Despite numerous simulation and observation studies on ionospheric signatures of tsunamis, the detection of Co‐tsunamic Ionospheric Disturbances (CTIDs) and distinguishing them ...
Clélia Maréchal, Elvira Astafyeva, Lucie Rolland, Anthony Sladen, Boris Maletckii   +4 more
wiley   +1 more source

Development of an early-warning system for monitoring remote volcanoes

Annals of Geophysics, 1996
Many andesitic volcanoes are quiescent for long time periods: usually (but not always) an increase in seismic activity and in deformation precedes an eruption by a few months or a few days.
G. Sauvage, J. P. Cauzac, G. Poupinet
doaj   +1 more source

Pervasively Thin Anatolian Lithosphere With Elevated Upper Mantle Temperatures in the East: Insights From Bayesian Thermo‐Compositional Inversion

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract Uplift and widespread Late Miocene‐present magmatism in Anatolia are commonly attributed to lithospheric thinning, possibly facilitated by the arrival of hot mantle plume material. There are various lines of evidence for thin present‐day lithosphere, but the spatial extent and degree of lithospheric thinning and the underlying mantle ...
Pengzhe Zhou, Saskia Goes, Ian D. Bastow, Frederick Richards, Thomas Burns, Amr El‐Sharkawy, Yanghua Wang   +6 more
wiley   +1 more source

A new consistent and high-precision earthquake catalogue for the Taupō Volcanic Zone, New Zealand

Seismica
The Taupō Volcanic Zone is a ~300 km long, volcanically active region in the North Island of Aotearoa New Zealand. As well as hosting numerous active volcanoes, it is also one of the most seismically active parts of the country.
Finnigan Illsley-Kemp, Eleanor Mestel
doaj   +1 more source

Microgravity Measurements Spanning 2019–2022 Indicate No Change in Magma Supply or Storage During Kīlauea's Reawakening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract After more than 2 years of quiescence following its major 2018 flank lava effusion and summit caldera collapse, Kīlauea, Hawaiʻi, returned to frequent eruptive activity in late 2020. Microgravity measurements from the summit region in 2019 and 2022 span this reawakening and indicate a gravity increase of up to hundreds of microgals near the ...
Michael P. Poland, Elske van Dalfsen, Marco Bagnardi, Ashton F. Flinders, Ingrid A. Johanson, Andria P. Ellis, Michael H. Zoeller   +6 more
wiley   +1 more source

Submarine seismicity monitoring with distributed acoustic sensing near Santorini and Kolumbo Volcano

Seismica
Submarine volcanoes and faults pose hazards to nearby populated islands, yet their inaccessibility limits monitoring efforts. The Christiana-Santorini-Kolumbo volcanic field is capable of generating devastating eruptions, earthquakes and tsunamis.
Sara Klaasen, Thomas Hudson, Sanchit Sachdeva, Paraskevi Nomikou, Andreas Fichtner   +4 more
doaj   +1 more source