921集集地震造成之地表變形模式; Styles of Surface Deformation Resulting from The 1999 Chi-Chi Earthquake

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Title:	921集集地震造成之地表變形模式;Styles of Surface Deformation Resulting from The 1999 Chi-Chi Earthquake
Authors:	康耿豪;Keng-Hao Kang
Contributors:	應用地質研究所
Keywords:	921;集集地震;車籠埔;斷層;地震;earthquake;chi-chi;921
Date:	2004-07-08
Issue Date:	2009-09-22 09:57:41 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	921地震車籠埔斷層活動造成近百公里的地表破裂，為近百年發生在陸地上逆衝斷層活動中的最大者，亦提供了研究低角度逆衝斷層破裂及地盤變形現象的絕佳機會。並在車籠埔斷層沿線選定六個具代表性地區，以電子全測站測量地震後地形，以及裂隙、地塹等次生構造，配合野外地質調查資料，製作剖面圖與3D透視圖，以了解斷層上下盤的變形方式。車籠埔斷層上盤的變形現象大致可分為(a)單斜變形，(b)純粹撓曲變形，(c)純逆衝變形，(d)逆衝及地塹變形，(e)逆衝及撓曲變形，(f)逆衝及背衝斷層變形，及(g)逆衝及背衝撓曲變形，各種變形特性將在本文描述。 The surface rupture along the Chelungpu fault associated with the 1999 Chi-Chi earthquake extends north-south about 100 km. It provides an exceptional opportunity to study surface deformation of a low angle thrust. Our detailed survey at representative sites along the fault shows that the rupture is a relatively simple 1 to 4 m high scarp with minor hanging-wall deformation and localize uplift, fold, and graben formation along the scarp crest. Along the length of the Chelungpu fault rupture, hanging-wall deformation may be classified into 7 different styles. This includes: (a) monoclinal folding, (b) warping, (c) pure thrusting, (d) thrusting and graben formation, (e) thrusting and warping, (f) thrusting and backthrusting, and (g) thrusting and back-kinking. Simple thrusting and monoclinal folding generally represent narrower deformation. whereas more complex zones of deformation tend to be wider. The deformation styles will be described in details in the text.
Appears in Collections:	[Graduate Institute of Applied Geology] Electronic Thesis & Dissertation

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