學術資源整合系統-相關推薦

 
作者Chung, Ling-Ho;Chen, Yue-Gau;Wu, Yih-Min;Shyu, J.B.H.;Kuo, Yu-Ting;Lin, Yu-Nong Nina
出版日期200805
著作名稱Seismogenic faults along the major suture of the plate boundary deduced by dislocation modeling of coseismic displacements of the 1951 M7.3 Hualien–Taitung earthquake sequence in eastern Taiwan
刊名Earth and Planetary Science Letters
269
3-4
頁數416-426
被收錄索引SCI
主題地質
關鍵字Coseismic displacement,Plate boundary,Active fault,Dislocation model
摘要Research at plate boundaries generally focuses on the kinematics of plate motions, the genesis of large earthquake, and natural resources. However, often the present state of knowledge is still insufficient to reveal the details of such dynamic systems. To define in more detail the dynamics of, a major plate boundary fault the Coastal Range Fault, eastern Taiwan, we use seismologic and geodetic data to unravel its subsurface geometry and relevant fault behavior. By recomputing the archive triangulation datasets (1917–1978), and using a dislocation algorithm, we determine that it consists of three segments. Our model results are consistent with the observation of the 1951 M7.3 Hualien–Taitung earthquake sequence: that the southern two segments are both oblique-slip faults with significant thrust components, while the northern segment is a pure strike-slip fault. According to our model each segment has the potential to produce an earthquake larger than M7. However, based on GPS observations and seismic records, slip on the southern segment may take the form of aseismic creep and multiple moderate earthquakes, rather than large events with long recurrence interval as occur on the two more northerly segments. With regard to the central segment, the epicenter distribution of catalogued earthquakes occurring after 1951 reveals the presence of a seismic gap, indicating that slip on this segment is predominantly coseismic, with a correspondingly higher potential for large earthquakes in the future.
全文Full Text;Full Text
資料連結Full Text
DOIhttps://doi.org/10.1016/j.epsl.2008.02.035
系統號NO000004536

Aug 20 2021 11:12:17
nmns/nmnsweb_2nd_target(0)