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研究生:彭葦
研究生(外文):Wei Pneg
論文名稱:2003年台東成功地震對於縱谷斷層地震活動度之影響
論文名稱(外文):Influence of seismicity rate change due to Chengkung earthquake along the Longitudinal Valley fault
指導教授:胡植慶胡植慶引用關係
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:地質科學研究所
學門:自然科學學門
學類:地球科學學類
論文種類:學術論文
畢業學年度:98
語文別:英文
論文頁數:59
中文關鍵詞:成功地震庫倫應力斷層觸發
外文關鍵詞:rate/state modelcoulomb stress changeearthquake triggeringChengkung earthquake
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Coulomb stress changes had been discussed broadly for understanding the earthquake interaction. Most successful studies were focused on the strike-slip fault system, such as San Andreas fault and north Anatolian fault. Comparing to the strike-slip fault, the complexity of thrust fault system is that the coulomb stress transfer varies with the depth and leads more uncertainty of subsurface structures to calculate the stress transfer. In this study we focused on a creeping Chihshang fault with the creeping rate of about 2-3 cm/yr, which ruptured on December 12, 2003 by Mw 6.5 Chenkung earthquake in eastern Taiwan. We calculated the coulomb stress change with different type of reciver fault in order to figure out how the background seismicity rate along the locked and crreping zone does influence the coulomb stress change. Futhermore, we want to discuss the fault interaction where April 1, 2006 Mw 6.4 Taitung earthquake which stress increasement probably imparted by the 2003 Chenkung earthquake.
Chapter I Motivation
1.1 Introduction …………………………………………………………………1
1.2 RoadMap ……………………………………………………………………3

Chapter II Seismicity Observation
2.1 Seismicity on the LVF ………………………………………………………..6
2.1.2 Fault segmentation …………….................................................................8
2.1.2.1 Mc estimate ………………………………………………………..9
2.1.2.2 Background seismicity rate ………………………………………..9
2.1.2.3 Aftershock duration ……………………………………...……....9
2.2 Change of seismicity rate associated with 2003 event ………………………10
2.2.1 Seismicity in eastern Taiwan ……………………………………......10
2.2.2 Seismicity in the Chihshang area …………………………………...12

Chapter III Coulomb stress transfer model
3.1 Coulomb stress changes ……………………………………………………..30
3.2 Rupture model …………………………………………………………….....30
3.3 Coulomb stress induced by Chengkung earthquake …………………….......31
3.3.1 Results of Coulomb stress change …………………………………..31

Chapter IV rate/state friction model
4.1 rate/state friction model ……………………………………………………...43
4.2 Results of expected seismicity rate …………………………………….........44

Chapter V Discussions
5.1 Earthquake triggering among segments of LVF ………………………….....49
5.2 Triggering order among segments of LVF …………………………………..50

Chapter VI Conclusions
6.1 Conclusions …………………………………………………………….……….54
References ..................................……………………………………………..55
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