碩士 / 國立中央大學 / 地球物理研究所 / 94 / We have applied array analysis to two-station method to obtain the Rayleigh-wave phase velocities in the Taiwan Strait to extract the regional crustal and upper mantle structure. Seismograms from teleseismic sources recorded by 4 BATS stations were used to determine the phase velocity dispersion data of Rayeigh waves with period range from 18 to 90 sec for 5 wave paths crossing the Taiwan Strait.
An inversion analysis on the dispersion data for each path gave the one-dimensional shear-wave velocity structure beneath the path. Inversion results show that crust under the Taiwan Strait has relative high velocities and thin thickness when comparing with the west Taiwan and southeastern China. S wave velocities of upper mantle in the Taiwan Strait are lower than the west Taiwan and southeastern China. A lid-low velocity zone structure of upper mantle fails to be discovered in the Taiwan Strait. The overall thickness of lithosphere under the Taiwan Strait is about 70~80 km.
| Identifer | oai:union.ndltd.org:TW/094NCU05134022 |
| Date | January 2006 |
| Creators | Hsin-Chiang Liang, 梁信強 |
| Contributors | none, none, 余貴坤, 顏宏元 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 69 |
Page generated in 0.017 seconds