Seismic anisotropy beneath the Chinese Mainland: Constraints from shear wave splitting analyses
We use earthquakes recorded by the China National Seismic Network from 2015 to 2019 and measure shear wave splitting parameters of SKS to study the anisotropic characteristics beneath the mainland of China.
Lingxia Gao, Daoyuan Sun
doaj +1 more source
Deformation in Rutford Ice Stream, West Antarctica: measuring shear-wave anisotropy from icequakes [PDF]
Ice streams provide major drainage pathways for the Antarctic ice sheet. The stress distribution and style of flow in such ice streams produce elastic and rheological anisotropy, which informs ice-flow modelling as to how ice masses respond to external
Baird, A.F. +15 more
core +1 more source
Deriving micro- to macro-scale seismic velocities from ice-core c axis orientations [PDF]
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 +6 more
doaj +1 more source
Shear-wave splitting in the mantle of the pacific [PDF]
SUMMARY The bulk of previously known data on seismic anisotropy in the suboceanic mantle was obtained from observations of azimuthal variations of the surface-wave and P, velocities. Our study of azimuthal anisotropy in the mantle of the Pacific is based on observations of shear-wave splitting. The idea of our method of measurement (Vinnik & Farra 1992)
Véronique Farra, Lev Vinnik
openaire +1 more source
New “Fresnel‐Zone” estimates for shear‐wave splitting observations from finite‐difference modeling
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
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
Mantle Flow Pattern Associated With the Patagonian Slab Window Determined From Azimuthal Anisotropy
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
Mantle flow through a tear in the Nazca slab inferred from shear wave splitting
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
Shear‐wave splitting observations across southwest Ireland [PDF]
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
Upper crust anisotropy of the 2020 Jiashi MS 6.4 earthquake
The 2020 Jiashi MS 6.4 earthquake occurred north of the 1997–1998 Jiashi earthquake swarm. Because of its complex tectonic environment and frequent strong earthquake occurrence, scholars have paid extensive attention to this area.
Jin Li +4 more
doaj +1 more source

