Results 31 to 40 of about 1,574 (185)

Seismic Anisotropy—Introduction [PDF]

Geophysics, 2011
This special section is dedicated to seismic anisotropy, which is playing an increasingly more important role in our understanding and modelling of the subsurface. Most papers published in this section were presented at the 14th International Workshop on Seismic Anisotropy (IWSA), which was held on 12–16 April 2010 in Hillarys, Perth, Western Australia.
Bona, Andrej, Gurevich, Boris, Ball, G., Pervukhina, M.   +3 more
openaire   +2 more sources

Correlation between crustal anisotropy and seismogenic stress field beneath Shillong–Mikir Plateau and its vicinity in North East India

Geomatics, Natural Hazards & Risk, 2021
A systematic study towards understanding the correlation between polarization direction of crustal anisotropy with seismogenic stress field at different locations of the Shillong-Mikir Plateau and its vicinity in North East India is attempted.
Santanu Baruah, Antara Sharma, Chandan Dey, Sowrav Saikia, Goutam Kashyap Boruah, Ayodeji Adekunle Eluyemi, Prachurjya Borthakur, Nabajyoti Molia, Anwesha Dutta Hazarika, Saitluanga Sailo, Sebastiano D’Amico, Manoj K. Phukan, Saurabh Baruah, J. R. Kayal   +13 more
doaj   +1 more source

Confronting Solid‐State Shear Bias: Magmatic Fabric Contribution to Crustal Seismic Anisotropy

Geophysical Research Letters, 2023
Seismic anisotropy is controlled by aligned rock‐forming minerals, which most studies attribute to solid‐state shear with less consideration for magmatic fabric in plutonic rocks (rigid‐body rotation of crystals in the presence of melt).
Michael G. Frothingham, Kevin H. Mahan, Vera Schulte‐Pelkum, Philippe Goncalves, Michele Zucali   +4 more
doaj   +1 more source

Seismic anisotropy in the Sumatra subduction zone [PDF]

Journal of Geophysical Research: Solid Earth, 2013
An important tool for understanding deformation occurring within a subduction zone is the measurement of seismic anisotropy through observations of shear wave splitting (SWS). In Sumatra, two temporary seismic networks were deployed between December 2007 and February 2009, covering the fore arc between the fore‐arc islands to the back arc.
Collings, R., Rietbrock, A., Tilmann, F., Lange, D., Nippres, S., Natawidjaja, D.   +5 more
openaire   +3 more sources

Impact of Shale Anisotropy on Seismic Wavefield

Energies, 2019
During unconventional resources exploration, ignoring shale anisotropy may lead to wrong seismic interpretations, thus affecting the accuracy and credibility of sweet spots prediction and reservoir characterization.
Han Li, Xiwu Liu, Xu Chang, Ruyue Wu, Jiong Liu   +4 more
doaj   +1 more source

Firn seismic anisotropy in the Northeast Greenland Ice Stream from ambient-noise surface waves [PDF]

The Cryosphere
We analyse ambient-noise seismic data from 23 three-component seismic nodes to study firn velocity structure and seismic anisotropy near the EastGRIP camp along the Northeast Greenland Ice Stream (NEGIS).
E. Pearce, D. Zigone, C. Hofstede, A. Fichtner, J. Rimpot, S. O. Rasmussen, J. Freitag, O. Eisen, O. Eisen, O. Eisen   +9 more
doaj   +1 more source

Influence of Error in Estimating Anisotropy Parameters on VTI Depth Imaging

International Journal of Geophysics, 2016
Thin layers in sedimentary rocks lead to seismic anisotropy which makes the wave velocity dependent on the propagation angle. This aspect causes errors in seismic imaging such as mispositioning of migrated events if anisotropy is not accounted for.
S. Y. Moussavi Alashloo, D. P. Ghosh, Y. Bashir, W. Y. Wan Ismail   +3 more
doaj   +1 more source

Sharp Changes of Crustal Seismic Anisotropy Across the Central Tanlu Fault Zone in East China

Geophysical Research Letters, 2023
Both seismic and geodetic data suggested that the ∼120‐km long Weifang segment of the Tanlu fault zone, a large‐scale active strike‐slip system at east China, is a seismic gap with no obvious along‐strike shear motion at surface.
Wenpei Miao, Fenglin Niu, Haichao Chen
doaj   +1 more source

Understanding seismic anisotropy in the Rotondo granite: investigating stress as a potential source [PDF]

Solid Earth
The hypothesis of stress-induced seismic anisotropy was tested in the Bedretto Lab, a deep underground rock laboratory in the Swiss Alps. Several comprehensive cross-hole seismic surveys were acquired to analyze the directional dependency of seismic-wave
K. Behnen, M. Hertrich, H. Maurer, A. Shakas, K. Bröker, C. Epiney, M. Blanch Jover, D. Giardini   +7 more
doaj   +1 more source

Petroelastic simulation as a method for analysing the anisotropy of elastic properties on the scale of seismic surveys

Известия высших учебных заведений: Геология и разведка, 2022
Introduction. Reservoirs composed of thin layers with different elastic properties exhibit the anisotropy of elastic properties. Anisotropic environments are studied using special seismic positioning systems that require large financial and time ...
M. K. Savoyskaya, I. O. Bayuk
doaj   +1 more source