Results 51 to 60 of about 4,956 (290)

Poloidal‐ and Toroidal‐Mode Mantle Flows Underneath the Cascadia Subduction Zone

Geophysical Research Letters, 2020
Several hypotheses have been proposed to explain intriguing circular shear wave splitting patterns in the Pacific Northwest, invoking either 2‐D entrained flows or 3‐D return flows. Here, we present some hitherto unidentified, depth‐dependent anisotropic
Hejun Zhu, Xueyan Li, Jidong Yang, Robert J. Stern, David E. Lumley   +4 more
doaj   +1 more source

Shear wave splitting of the 2018 Lombok earthquake aftershock area, Indonesia

Geoscience Letters, 2023
Lombok is one of the islands in the transitional zone from the Sunda Arc to the Banda Arc, Indonesia. In the mid-2018, the island of Lombok was shaken by a series of strong earthquakes, started with a moment magnitude (Mw) 6.4 earthquake on July 29, 2018
Annisa Trisnia Sasmi, Andri Dian Nugraha, Muzli Muzli, Sri Widiyantoro, Syuhada Syuhada, Faiz Muttaqy, Zulfakriza Zulfakriza, Shengji Wei, Awali Priyono, Haunan Afif, Pepen Supendi, Yayan Mi’rojul Husni, Billy S. Prabowo, Achmad Fajar Narotama Sarjan   +13 more
doaj   +1 more source

Complex wavelet transform: an application to retrieve shear wave splitting time behavior at Mt. Vesuvius

, 2010
Shear wave splitting is the elastic-equivalent of the well-known phenomenon of optical birefringence. A shear wave propagating through an anisotropic volume splits into two S waves (qS1 and qS2) that travel with different velocities and different ...
Gargiulo, G., Castellano, M., Bianco, F., Zaccarelli, L.   +3 more
core   +2 more sources

Crack Features and Shear-Wave Splitting Associated with Fracture Extension during Hydraulic Stimulation of the Geothermal Reservoir in Soultz-sous-Forêts

Oil & Gas Science and Technology, 2016
The recent tomography results obtained within the scope of the Enhanced Geothermal System (EGS) European Soultz project led us to revisit the meso-fracturing properties of Soultz test site.
Adelinet M., Dorbath C., Calò M., Dorbath L., Le Ravalec M.   +4 more
doaj   +1 more source

Upper‐Mantle Anisotropy and Dynamics Beneath Northeast Asia: Insight From SKS and Local S Splitting Analysis

Geochemistry, Geophysics, Geosystems, 2020
Tectonics in Northeast Asia are characterized as the deep subduction of the Pacific Plate and the induced volcanism in Northeast China. Seismic anisotropy due to deformations is essential for understanding the mantle dynamics.
Yajing Bi, Zhouchuan Huang, Haibo Wang, Hanting Wu   +3 more
doaj   +1 more source

The origin of shear wave splitting beneath Iceland [PDF]

Geophysical Journal International, 2015
The origin of shear wave splitting (SWS) in the mantle beneath Iceland is examined using numerical models that simulate 3-D mantle flow and the development of seismic anisotropy due to lattice-preferred orientation (LPO). Using the simulated anisotropy structure, we compute synthetic SKS waveforms, invert them for fast polarization directions and split
Garrett Ito, Robert Dunn, Aibing Li
openaire   +1 more source

The development of magmatism along the Cameroon Volcanic Line: evidence from seismicity and seismic anisotropy [PDF]

, 2014
The Cameroon Volcanic Line (CVL) straddles the continent-ocean boundary in West Africa but exhibits no clear age progression. This renders it difficult to explain by traditional plume/plate motion hypotheses; thus, there remains no consensus on the ...
R. J. Gallacher, J. Keane, Keir, D, I. D. Bastow, Chambers, EL, Keane, J, Chambers, E.L., E. L. Chambers, De Plaen, RSM, Keane, J., Keir, D., D. Keir, Bastow, ID, R. S. M. De Plaen, De Plaen, R.S.M., Gallacher, RJ, Keir, Derek Boswell, Bastow, I.D., Gallacher, R.J.   +18 more
core   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Time Varying Crustal Anisotropy at Whakaari/White Island Volcano

Geophysical Research Letters
Whakaari/White Island has been the most active New Zealand volcano in the 21st century, producing small phreatic and phreatomagmatic eruptions, which are hard to predict.
D. Y. Mengesha, M. K. Savage, A. D. Jolly, C. J. Ebinger   +3 more
doaj   +1 more source