Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy
نویسندگان
چکیده
منابع مشابه
Complex anisotropy beneath the Peruvian flat slab from frequency- dependent, multiple-phase shear wave splitting analysis
[1] Flat or shallow subduction is a relatively widespread global occurrence, but the dynamics remain poorly understood. In particular, the interaction between flat slabs and the surrounding mantle flow has yet to be studied in detail. Here we present measurements of seismic anisotropy to investigate mantle flow beneath the Peruvian flat-slab segment, the largest present-day region of flat subdu...
متن کاملOn the relationship between azimuthal anisotropy from shear wave splitting and surface wave tomography
[1] Seismic anisotropy provides essential constraints on mantle dynamics and continental evolution. One particular question concerns the depth distribution and coherence of azimuthal anisotropy, which is key for understanding force transmission between the lithosphere and asthenosphere. Here, we reevaluate the degree of coherence between the predicted shear wave splitting derived from tomograph...
متن کاملFrequency-dependent shear wave splitting beneath the Japan and Izu-Bonin subduction zones
Despite its importance for ourunderstandingof physical processes associatedwith subduction, the geometry of mantle flow in subduction zones remains poorly understood, particularly in the mantle wedge above subducting slabs. Constraints onmantle flowanddeformation canbeobtainedbymeasurements of shearwave splitting, a valuable tool used to characterize the geometry and strength of seismic anisotr...
متن کاملFrequency-dependent shear wave splitting and heterogeneous anisotropic structure beneath the Gulf of California region
The Gulf of California region has undergone a major evolution over the past ∼15Ma, since subduction of the now-extinct Farallon plate ceased and transform motion began, leading to the initiation of rifting and the opening of the Gulf of California ∼5Ma ago. The character of dynamic processes in the upper mantle beneath the region remains poorly understood, but constraints on seismic anisotropy ...
متن کاملContinental scale shear wave splitting analysis: Investigation of seismic anisotropy underneath the Australian continent
The structure of the upper mantle beneath the Australian continent is investigated using teleseismic shear wave splitting to extract seismic anisotropy. Measurements have been performed on data recorded at 190 sites with portable broadband seismic recorders, spanning almost the entire surface of the continent since 1992. The average time span of the various deployments, primarily designed for s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Geophysica
سال: 2016
ISSN: 1895-6572,1895-7455
DOI: 10.1515/acgeo-2015-0060