Results 41 to 50 of about 523,525 (211)

Azimuth-, angle- and frequency-dependent seismic velocities of cracked rocks due to squirt flow [PDF]

Solid Earth, 2020
Understanding the properties of cracked rocks is of great importance in scenarios involving CO2 geological sequestration, nuclear waste disposal, geothermal energy, and hydrocarbon exploration and production.
Y. Alkhimenkov, Y. Alkhimenkov, E. Caspari, S. Lissa, B. Quintal, B. Quintal   +5 more
doaj   +1 more source

Fluid‐induced slip on a rate‐and‐state fault during co‐ and post‐injection: The interplay of fluid pressure diffusion and poroelastic stress

Deep Underground Science and Engineering, EarlyView.
Fault slip can occur ahead of the injection pressure front due to poroelastic stress. Our model captures the interaction of pressure, stress, and friction, providing new insights into injection‐induced seismicity and post‐injection fault slip. Shut‐in operations can either mitigate or accelerate seismic events depending on fault conditions and ...
Qifeng Xie, Lei Wang, Qi Li
wiley   +1 more source

Seismic anisotropy under Zagros foreland from SKS splitting observations [PDF]

Solid Earth
We present SK[K]S splitting measurements from 18 newly deployed seismic stations in the foreland of the Zagros collision zone, providing new insights into asthenospheric flow and lithospheric deformation associated with the Arabian-Eurasian continental ...
K. Motaghi, A. Kaviani, W. Abdulnaby, H. Mahdi, H. Al-Shukri   +4 more
doaj   +1 more source

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

Deep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang, Guoyao Xu, Liyuan Liu, Yao Zhang, Sitao Zhu, Hongyang Chu, Kaikai Zhao   +6 more
wiley   +1 more source

Widespread Deformation at the Base of the Mantle Linked to Subducted Slabs

The Seismic Record
In Earth’s deepest mantle (D″), shear wave speeds can vary with propagation and vibration direction of the wave because of convection-driven mantle deformation, a phenomenon known as seismic anisotropy.
Jonathan Wolf, Barbara Romanowicz, Ed Garnero, Weiqiang Zhu, John D. West   +4 more
doaj   +1 more source

Research progress on seismic anisotropy in the Tarim Basin and Tianshan region

地球与行星物理论评
The Tarim Basin and the Tianshan region are the key interaction zones between the Central Asian orogenic belt and stable blocks, and are natural laboratories for studying the tectonic deformation of the continent, the coupling effect of basin-mountain ...
Taijin Su, Hua Wu, Changhui Ju, Junmeng Zhao, Sen Hu, Junzhe Teng, Kangcheng Zhu, Yuzhong Kong   +7 more
doaj   +1 more source

Deriving micro- to macro-scale seismic velocities from ice-core c axis orientations [PDF]

The Cryosphere, 2018
One of the great challenges in glaciology is the ability to estimate the bulk ice anisotropy in ice sheets and glaciers, which is needed to improve our understanding of ice-sheet dynamics.
J. Kerch, J. Kerch, A. Diez, I. Weikusat, I. Weikusat, O. Eisen, O. Eisen   +6 more
doaj   +1 more source

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

Deep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan, Fangkai Liu, Sen Zhu, Guangyou Zhu, Haiping Huang   +4 more
wiley   +1 more source

Possible layered lithospheric anisotropy around Longmenshan Faults by teleseismic S wave splitting and receiver functions

Frontiers in Earth Science
This study conducts an in-depth analysis of seismic anisotropy around the Longmenshan Faults. Utilizing a dataset of about 7710 earthquake catalogs from July 2007 to March 2023, we applied S wave splitting and receiver function methods to examine Pms and
An-Jian Wang, Yuan Gao
doaj   +1 more source

On Including Near-surface Zone Anisotropy for Static Corrections Computation—Polish Carpathians 3D Seismic Processing Case Study

Geosciences, 2020
Obtaining the most accurate and detailed subsurface information from seismic surveys is one of the main challenges for seismic data processing, especially in the context of complex geological conditions (e.g., mountainous areas).
Mateusz Zaręba, Tomasz Danek, Jerzy Zając   +2 more
doaj   +1 more source