Cejing jishu, 2023 The wave field data which is monitored the fracturing crack by micro seismic in the well is complex, especially when the shear wave (S-wave) encounters the fracture. The shear wave will split into the fast or slow wave. The polarization directions of the
WEN Rou +5 more
doaj +1 more source
Sub-slab mantle anisotropy beneath south-central Chile [PDF]
, 2012 Knowledge of mantle flow in convergent margins is crucial to unravelling both the contemporary geodynamics and the past evolution of subduction zones. By analysing shear-wave splitting in both teleseismic and local arrivals, we can determine the relative
Hicks, Stephen P. +2 more
core +1 more source
New “Fresnel‐Zone” estimates for shear‐wave splitting observations from finite‐difference modeling
Geophysical Research Letters, 2000 We employ full finite‐difference modeling to study effects of teleseismic shear‐wave splitting in 2D upper‐mantle models with lateral variations of anisotropy. In our models the anisotropy is confined to a layer at variable depth within the top 550 km of
Georg Rümpker, Trond Ryberg
doaj +1 more source
Identifying global seismic anisotropy patterns by correlating shear-wave splitting and surface-wave data [PDF]
, 2009 International audienceWe compare a global compilation of shear-wave splitting measurements with azimuthal seismic anisotropy parameters inferred from surface-wave tomography.
Barruol, Guilhem +3 more
core +6 more sources
Shear‐wave splitting observations across southwest Ireland [PDF]
Geophysical Research Letters, 2006 Shear‐wave splitting analyses have been carried out on teleseismic data from the southwest of Ireland acquired during the Irish Seismological Lithospheric Experiment (ISLE). The data were gathered over a ten‐month period by a temporary network of 23 broadband and short‐period stations.
Do, V. +3 more
openaire +3 more sources
Mantle flow through a tear in the Nazca slab inferred from shear wave splitting
Geophysical Research Letters, 2017 A tear in the subducting Nazca slab is located between the end of the Pampean flat slab and normally subducting oceanic lithosphere. Tomographic studies suggest mantle material flows through this opening.
Colton Lynner +4 more
doaj +1 more source
Mantle Flow Pattern Associated With the Patagonian Slab Window Determined From Azimuthal Anisotropy
Geophysical Research Letters, 2022 Geological processes in Southern Patagonia are affected by the Patagonian slab window, formed by the subduction of the Chile Ridge and subsequent northward migration of the Chile Triple Junction.
Walid Ben‐Mansour +6 more
doaj +1 more source
The Turkish Dilatancy Project (TDP3): multidisciplinary studies of a potential earthquake source region [PDF]
, 1987 The section of the North Anatolian Fault lying near the city of Izmit, at the east of the Marmara Sea, has been identified as a seismic gap and the possible site of a future major earthquake.
Beamish, David +3 more
core +1 more source
Observations of stress relaxation before earthquakes [PDF]
, 2004 Theory and observations suggest that seismic shear wave splitting, caused by fluid-saturated stress-aligned microcracks, directly monitors low-level deformation before fracturing, faulting and earthquakes occur.
Angerer +21 more
core +1 more source
Seismic Anisotropy Analysis Beneath Sumatra Revealed by Shear-Wave Splitting
Indonesian Journal on Geoscience, 2017 DOI: 10.17014/ijog.4.3.169-179A shear-wave splitting analysis was determined to observe anisotropic structures of an upper mantle layer beneath Sumatra.
Arya Dwi Candra +2 more
doaj +1 more source