Results 41 to 50 of about 31,006 (289)

Estimation of Litho-Fluid Facies Distribution from Zero-Offset Acoustic and Shear Impedances

Applied Sciences, 2022
Seismic data are considered crucial sources of data that help identify the litho-fluid facies distributions in reservoir rocks. However, different facies mostly have similar responses to seismic attributes.
Mohammed Fathy Gouda, Abdul Halim Abdul Latiff, Seyed Yasser Moussavi Alashloo   +2 more
doaj   +1 more source

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

Unsolved problems in the lowermost mantle [PDF]

, 2006
Many characteristics of D '' layer may be attributed to the recently discovered MgSiO3 post-perovskite phase without chemical heterogeneities. They include a sharp discontinuity at the top of D '', regional variation in seismic anisotropy, and a steep ...
Brodholt, JP, Cormier, VF, Hirose, K, Karato, S, Yuen, DA   +4 more
core   +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

Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]

, 2014
We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
BOLLINGER, Caroline, CASTELNAU, Olivier, CORDIER, Patrick, DETREZ, Fabrice, MERKEL, Sébastien, RATERRON, Paul   +5 more
core   +4 more sources

Calculation of acoustic parameters by a filter-correlation method [PDF]

, 1993
This paper presents the filter correlation method, a technique for extracting consistent and accurate estimates of attenuation parameters from acoustic waveform data.
Courtney, Robert C., Mayer, Larry A.
core   +2 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

High temperature elastic anisotropy of the perovskite and post-perovskite polymorphs of Al2O3 [PDF]

, 2005
Finite temperature ab initio molecular dynamics calculations were performed to determine the high temperature elastic and seismic properties of the perovskite and post-perovskite phases of pure end-member Al2O3.
Brodholt, JP, Price, GD, Stackhouse, S
core   +1 more source

Major methods of seismic anisotropy

Earthquake Research Advances
Seismic anisotropy reveals that seismic wave velocity, amplitude, and other physical properties show variations in different directions, which can be divided into lattice-preferred orientation (LPO) and shape-preferred orientation (SPO) according to its ...
Xinai Zhao, Jing Wu
doaj   +1 more source