Results 111 to 120 of about 27,306 (237)

On the Relationship Between Oceanic Plate Speed, Tectonic Stress, and Seismic Anisotropy. [PDF]

Geophys Res Lett, 2022
Kendall E, Faccenda M, Ferreira AMG, Chang SJ.   +3 more
europepmc   +1 more source

Heat and Tectonics of the Canadian Cordillera From the Seismically Constrained Inversion of Gravity Data

Tectonics, Volume 45, Issue 2, February 2026.
Abstract An updated approach to seismically constrained modeling of gravity data reveals two broad, NW‐trending low‐density zones in the mantle lithosphere beneath the Canadian Cordillera. The low‐density zones coincide with a shallow lithosphere‐asthenosphere boundary (LAB), a shallow Curie‐point depth, and the location of Quaternary volcanoes.
Nathan Hayward, Tark S. Hamilton
wiley   +1 more source

Generalization of Snell's Law for the propagation of acoustic waves in elliptically anisotropic media

AIMS Mathematics
In seismic data processing, both in inversion (Inverse Processing) and modeling (Direct Processing), it is essential to consider anisotropy to unravel the geological structure of the subsoil. Besides, in most cases, the macroscopic model of anisotropy in
Luis M. Pedruelo-González , Juan L. Fernández-Martínez   +1 more
doaj   +1 more source

The Impact of Orogenic Inheritance on Rifted Margin Formation

Tectonics, Volume 45, Issue 2, February 2026.
Abstract Many rifted margins form within pre‐existing orogenic belts, emphasizing the significance of structural, thermal, and compositional inheritance in shaping rift dynamics. However, a key unresolved question is how these different types of orogenic inheritance individually influence rift evolution.
Kai Li, Sascha Brune, Zoltán Erdős, Michaël Pons, Anne Glerum   +4 more
wiley   +1 more source

Interplay Between Mechanical and Petrochemical Models on the Fluid Extraction From Subduction Zones

Journal of Metamorphic Geology, Volume 44, Issue 2, Page 85-111, February 2026.
ABSTRACT The breakdown of hydrous minerals during subduction results in a densification of the rocks, producing volume changes that can trigger fluid pressure fluctuations and hydrofracturing. These volume changes are controlled by the Clapeyron slope of the reaction and are quantified here using a macroscopic framework that integrates a zero ...
Thorsten Andreas Markmann, Pierre Lanari   +1 more
wiley   +1 more source

Helioseismic response to X2.2 solar flare of February 15, 2011

, 2011
The X2.2-class solar flare of February 15, 2011, produced a powerful sunquake event, representing a helioseismic response to the flare impact in the solar photosphere, which was observed with the HMI instrument on the Solar Dynamics Observatory (SDO ...
Donea, Donea, Hudson, Kosovichev, Kosovichev, Kosovichev, Kosovichev, Kosovichev, Kosovichev, Kostiuk, Zharkova   +10 more
core   +1 more source

Seismological Evidence of Multiple Crustal Magma Reservoirs Beneath Mt. Wrangell in Southcentral Alaska

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Recent studies have challenged the classical view of magma chambers as ephemeral, melt‐rich bodies confined to shallow depths beneath arc volcanoes at subduction zones. Instead, increasing evidence supports the existence of long‐lived, vertically extensive magmatic systems with persistent partial melts within the crust. Nevertheless, the depth
Qili Andy Dai, Haiying Gao, Sahria Nayon, Zane Michael Cleghorn, Cong Li   +4 more
wiley   +1 more source

Davemaoite Elasticity Reveals Slab‐Induced Heterogeneity in the Mantle Transition Zone

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The observed 2%–7% low‐shear velocity (VS) anomalies near the subducted slab at the bottom mantle transition zone (MTZ) indicate strong lateral heterogeneity, which is commonly attributed to subducted oceanic crust. However, davemaoite, a major constituent of the subducted oceanic crust, has been poorly constrained in its elasticity, hindering
Yingxin Yu, Xinyue Zhang, Dongzhou Zhang, Luo Li, Zhu Mao, Ningyu Sun, Denglei Wang, Jing Li, Chaoshuai Zhao, Cheng Qian, Yingzhan Wei, Xinyang Li, Yuzhu Wang, Takayuki Ishii   +13 more
wiley   +1 more source

Insights on the African Upper Mantle From Quasi‐Love Wave Scattering

Geochemistry, Geophysics, Geosystems
The African upper mantle is diverse, featuring several cratonic roots, active and magmatic continental rifting, abundant intra‐plate volcanism, and several oceanic hotspots offshore.
Thomas A. J. Merry, Caroline M. Eakin
doaj   +1 more source

Effect of Al on the sharpness of the MgSiO_3 perovskite to post-perovskite phase transition [PDF]

, 2005
By means of static ab-initio computations we investigate the influence of Al on the recently discovered perovskite to post-perovskite phase transition in MgSiO_3. We examine three substitution mechanisms for Al in the two structures: MgSi → AlAl; SiSiO →
Akber-Knutson, S., Asimow, Paul D., Steinle-Neumann, G.   +2 more
core