Results 101 to 110 of about 1,610 (209)

Shear-wave attenuation anisotropy: a new constraint on mantle melt near the Main Ethiopian Rift

Seismica
The behaviour of fluids in preferentially aligned fractures plays an important role in a range of dynamic processes within the Earth. In the near-surface, understanding systems of fluid-filled fractures is crucial for applications such as geothermal ...
Joseph Asplet, James Wookey, Micheal Kendall, Mark Chapman, Ritima Das   +4 more
doaj   +1 more source

Surrogate‐Assisted Bayesian Inference of Fracture Network Parameters From Elastic Waves: A Sensitivity‐Guided Approach

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract We develop a sensitivity‐guided, surrogate‐assisted Bayesian framework to infer fracture network parameters from elastic waves. Synthetic fracture networks characterized by power‐law length exponent a $a$, fracture density d $d$, and percolation parameter p $p$ are constructed.
Le Zhang, Qinghua Lei, Longjun Dong, Chuanyin Jiang, Thomas Hermans   +4 more
wiley   +1 more source

Uplift of the Transantarctic Mountains: Evidence for an Evolving and Long‐Lived Rayleigh‐Taylor Instability

Tectonics, Volume 45, Issue 8, August 2026.
Abstract Rayleigh‐Taylor instabilities within the upper mantle are investigated as a mechanism for the uplift of rift‐margin mountain ranges within the continents. Our focus is on the Transantarctic Mountains (TAM). These mountains form at the margin between East and West Antarctica and have been free from the effects of subduction for about 500 ...
Tim Stern, Simon Lamb, James D. P. Moore, Alec Yates   +3 more
wiley   +1 more source

The isotropic and anisotropic passive seismic tomography for mineral exploration: a case study of Dongchuan copper deposit, China

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Conventional metallic mineral exploration has primarily relied on potential field and electromagnetic methods, while reflection-based seismic methods have seen limited application in this field.
Xiuping Qi, Zhikun Liu, Yuqian Guo, Xinyang He, Liang Tuo, Jinli Huang   +5 more
doaj   +1 more source

Active Tectonics of the Eastern and Southern Alps ‐ Crustal Response to Deep Processes? A Review

Tectonics, Volume 45, Issue 8, August 2026.
Abstract Owing to the low N‐S convergence rates between Adria and Europe, crustal deformation rates in the Alps and its forelands are low. Active tectonics are, therefore, difficult to study, especially as non‐tectonic landscape forming processes can erase or modify the tectonic surface imprint. Large‐scale and dense seismological data recently offered
Christoph Grützner, Gesa Petersen, Enrico Serpelloni, Sabrina Metzger, Jasper Moernaut, Kamil Ustaszewski, Jacek Szczygieł, Petra Jamšek Rupnik, Azam Jozi Najafabadi, Ajay Kumar, Andrea Piccolo, Blaž Vičič, Simone Cesca, Esther Hintersberger, Laurens Jan Hofman, Jörn Kummerow, Erick Prince, Klaus Reicherter, Christian Schuler, Gregor Rajh, Marcel Thielmann   +20 more
wiley   +1 more source

Inversion by Intrusion: Magma‐Driven Shortening in the Turkana Rift (East Africa)

Tectonics, Volume 45, Issue 8, August 2026.
Abstract Late Pliocene to Pleistocene inversion in the Turkana Rift, observed on seismic reflection data and in outcrop, presents a tectonic paradox by indicating local shortening in an overall extensional setting. Previous studies attributed this inversion either to the reactivation of obliquely oriented structural weaknesses or to reorientation of ...
Ameha A. Muluneh, Chris K. Morley, Sascha Brune, Sibiao Liu, Anne C. Glerum, Rene Gassmöller, Marta Pérez‐Gussinyé   +6 more
wiley   +1 more source

Meltwater Orientations Modify Seismic Anisotropy in Temperate Ice

Geophysical Research Letters
Seismology is increasingly used to infer the magnitude and direction of glacial ice flow. However, the effects of interstitial meltwater on seismic properties remain poorly constrained.
Cassandra Seltzer, Maria‐Gema Llorens, Andrew J. Cross   +2 more
doaj   +1 more source

A Physics‐Based Frequency‐Temperature Seismic Anelastic Attenuation Model for Planetary Ice Shells

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Intrinsic attenuation in planetary ices remains poorly constrained at seismic frequencies and low temperatures, limiting quantitative predictions of wave propagation in icy moons. Existing models typically rely on constant‐Q, or power‐law formulations that lack microphysical grounding and fail to capture the strong temperature sensitivity of ...
L. Delaroque, A. Lucas, T. Kawamura, S. Rodriguez   +3 more
wiley   +1 more source

Along‐Strike Variations in Sub‐Arc Melting Beneath the Alaska Peninsula Revealed by P‐Wave Attenuation

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract The diverse volcanic activity in the Alaska Peninsula section of the Alaska‐Aleutian subduction zone is presumably caused by substantial variations in mantle wedge melting or trans‐crustal processes beneath the arc. In this study, we investigate sub‐arc melting beneath the Alaska Peninsula by measuring P‐wave attenuation, as attenuation is ...
Zhuoran Zhang, S. Shawn Wei, Yurong Riley Zhang, Fan Wang, Dongdong Tian   +4 more
wiley   +1 more source

Two Distinct Growth Styles of Riedel Shear Zones in Cratonic Strike‐Slip Fault System, Tarim Basin, NW China

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract The kinematics and progressive evolution of Riedel shear zones have been extensively studied, yet the factors controlling their distinct evolutionary styles in natural settings remain debated. Understanding such fracture network architecture has great implications, such as predicting subsurface fluid flow and assessing seismic hazards.
Jiajun Chen, Zhanfeng Qiao, Tianfu Zhang, Uwe Ring, Shaoying Chang, Peng Cao, Mengxiu Wang, Yifan Du   +7 more
wiley   +1 more source