Results 31 to 40 of about 753 (148)
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun +3 more
wiley +1 more source
Autocorrelation Seismic Imaging of Northern Taiwan Using Ambient Noise Data
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract Over the past few million years, northern Taiwan records a tectonic history of subduction to arc–continent collision followed by post‐collisional collapse. This evolution motivates constraints on crustal structure, including crustal layering and thickness.
Mei Chien, Alan Levander, Po‐Fei Chen
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Impact Plasma Amplification of the Ancient Mercury Magnetic Field
Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.Abstract Spacecraft measurements of Mercury indicate that it has a core dynamo with a surface field of 200–800 nT. These data also indicate that the northern hemisphere crust contains remanent magnetization likely produced by an ancient magnetic field. The inferred magnetization intensity is consistent with a wide range of paleofield strengths (0.2–50 ...
Isaac S. Narrett +6 more
wiley +1 more source
Aspect Asymmetry in Martian Gullies: A Topographic Signature of Their Formation Process?
Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.Abstract On Mars, erosional‐depositional landforms named gullies provide natural experiments for studying the topographic signature of the processes that act on hillslope evolution. High‐resolution topographic data were used to quantitatively compare the steepness of opposing walls in gully alcoves incised into ice‐rich slopeside mantling deposits.
A. Noblet, G. R. Osinski, S. J. Conway
wiley +1 more source
Tectonics, Volume 45, Issue 5, May 2026.Abstract Throw rates of active faults are expected to scale with fault length because the geometric moment of a fault is directly related to its dimensions. However, empirical data sets commonly display substantial scatter, which limits the use of fault scaling relationships for seismic hazard assessment and for understanding the mechanics of ...
M. Meschis +12 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.Abstract Peridotites record the compositional evolution of the lithospheric and asthenospheric mantle across plume‐related lithospheres, convergent margins, and rift‐related volcanic environments; however, their tectonomagmatic affinities are commonly difficult to resolve using traditional low‐dimensional geochemical discrimination diagrams.
Swarnendu Roy, Koushik Sen
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.Abstract Granitoid magmatism along the western Pacific margin records interactions between subduction dynamics and crust–mantle processes; however, the links between plate reorganization and magma‐source evolution remain debated. Here we integrate U–Pb zircon geochronology with Pb–Sr–Nd–Hf isotope systematics to investigate Cretaceous–Paleogene ...
Nghiem V. Dao +7 more
wiley +1 more source
Postglacial rebound with a non‐Newtonian upper mantle and a Newtonian lower mantle rheology
Geophysical Research Letters, 1992 We have employed a composite rheology consisting of both linear and nonlinear creep mechanisms which are connected by a ‘transition’ stress. Background stress due to geodynamical processes is included. For models with a non‐Newtonian upper‐mantle overlying a Newtonian lower‐mantle the temporal responses of the displacements can reproduce those of ...
Gasperini P., Yuen D. A., Sabadini R.
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Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The absence of sound‐velocity data spanning the entire lower mantle pressures for (Fe, Al)‐bearing bridgmanite impedes direct comparisons with seismic wave observations, leaving the chemistry of the lower mantle unresolved. The present ultra‐high pressure sound‐velocity measurements of in situ synthesized (Fe, Al)‐bearing bridgmanite up to 130
P. Saha, M. Murakami, N. Miyajima
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Fault Kinematic Controls on the Spatio‐Temporal Proximity of the 2023 Mw 7.8‐7.7 Türkiye Earthquakes
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The mechanism governing the spatio‐temporal proximity of the 2023 Mw 7.8‐7.7 Türkiye earthquakes remains enigmatic. Here, we used dense geodetic observations integrated with dual‐fault screw dislocation, Euler‐vector‐constrained block, and strain‐rate models to investigate the interseismic kinematics and pre‐stress state of the East Anatolian ...
Wenbin Xu +5 more
wiley +1 more source