Shear Wave Anisotropy

Seismic anisotropy from teleseismic shear wave splitting measurements

作者:

Seismic anisotropy in the Fujian lithosphere and its tectonic implications from teleseismic shear wave splitting measurements

  1. As a result, the thickness of anisotropic layer increases from northeast to southwestin the Fujian area and in the southern part.

  2. Compared with the global tomography, it can be explained that the variations of fast-polarizations could relate to the EW mantle flowcreated by NS collision between the India and Eurasian Plates.

鍾仁齊 Jen-Chi Chung
碩士論文：利用剪力波分離探討福建地區岩石圈的非均向性及其地體構造上之意涵
Master’s Thesis: Seismic anisotropy in the Fujian lithosphere and its tectonic implications from teleseismic shear wave splitting measurements

Seismic anisotropy from teleseismic shear wave splitting measurements

作者:

Seismic anisotropy in the southeastern China and its tectonic implications from teleseismic shear wave splitting measurements

  1. In this study, we use teleseismic SKS/SKKS splitting as a tool for investigating seismic anisotropy.

  2. As a result, along the Fujian coastline,compared with the global tomography, it can be explained that the variations of fast-­‐polarizations (φf) could relate to the EW mantle flow created by NS collision between the India and Eurasian Plates, influenced by the Taiwan orogen (the collision between Eurasian and Philippine sea plates) and two subduction systems (the Manila and Ryukyu subductions).

彭筱涓 Hsiao-Chuan Peng
碩士論文：利用剪力波分離探討中國大陸東南沿海地區的非均向及其地體構造上之意涵
Master’s Thesis: Seismic anisotropy in the southeastern China and its tectonic implications from teleseismic shear wave splitting measurements

Seismic anisotropy in the upper crust from active source experiment

作者:

Seismic anisotropy in the upper crust from active source experiment

  1. Seismic anisotropy obtained from active source experiment

  2. Two anisotropic patterns in the Central Range. In the northern part, fast direction 42° with 9.7% anisotropy. In the southern part: fast direction 18° with 5.8% anisotropy.

  3. The deformation of the upper crust in the Central Range in northern part higher than that in the southern part.

Kuo-Chen, H., P. Sroda, F. T. Wu, C.-Y. Wang, Y.W. Kuo (2013) Seismic anisotropy of the upper crust in the mountain ranges of Taiwan from the TAIGER explosion experiment, Terrestrial, Atmospheric and Oceanic Sciences, 24, 6, 963-970, doi: 10.3319/TAO.2013.07.30.01(T).

SKS/SKKS splitting and Taiwan orogeny

作者:

SKS/SKKS splitting and Taiwan orogeny

  1. In central and southern Taiwan, the source of the anisotropy is mainly from the vertically coherent deformation of the crust and upper mantle by left‐lateral shearing. Red arrows represent the shear directions.

  2. In northern Taiwan, the source of anisotropy may be more complicated. Both hydrated olive in the upper mantle and the extrusion at the end of a collision zone are possible sources, but other possibilities can not be excluded.

Kuo-Chen, H., F. T. Wu, D. Okaya, B.-S. Huang, and W.-T. Liang (2009) SKS/SKKS Splitting and Taiwan Orogeny, Geophys. Res. Lett., doi:10.1029/2009GL038148

Download Page: https://sgylab.gl.ntu.edu.tw/data/#2009