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Student Number 90622006
Author Ling-Yuan Qiu(邱凌源)
Author's Email Address No Public.
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Department Graduate Institute of Geophysics
Year 2002
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title The study on the subsurface structures in the north portion of Chichi earthquake fault by 3-D Physical modeling test
Date of Defense 2003-07-10
Page Count 111
Keyword
  • Chelungpu fault
  • Chichi earthquake fault
  • SanI fault
  • Abstract The Chelungpu fault activity triggered 921 Chichi Earthquake in 1999, the accompanied nearly 100 km long surface rupture is named as Chichi earthquake fault. Efforts have been endeavored to the study of the eastward extension of the fault after crossing through Tachiahsi northwardly. Based on the thin-skin thrust model, this study performed 3-D physical modeling tests for the purpose of realizing the subsurface geologic structures at the turning region of Chichi earthquake fault.
    Two groups of model designs have been tested in the study. In the first group models, a main weak plane (MWP) has been properly designed to simulate the pattern of Chichi earthquake fault, tests are meant to find out the faulting characteristics in relation to the nearby geologic structures. In the second group models, a sub-weak plane (SWP) has been considered to justify the eastward turning action of Chichi earthquake fault. By correlating the test results with all the available geological and geophysical data, a possible subsurface geologic structure pattern in presented for the northern portion of Chichi earthquake fault.
    By judging from the test results, it shows that Chichi earthquake fault and SanI fault may both possibly belong to the same N-S oriented fault thrusting system, which dips 30 degrees to the east. And the turning phenomenon of Chichi earthquake fault at Tachiahsi may possibly guided by a pre-existing E-W oriented weak zone at the place. And besides, further northwestward tectonic compression will tend to change the E-W oriented portion of Chichi earthquake fault to a northeastward extension.
    Table of Content 摘要………………………………………………………………….... i
    誌謝…………………………………………………………………… ii
    目錄…………………………………………………………………… iii
    圖目…………………………………………………………………… iv
    表目…………………………………………………………………… v
    第一章 緒論………………………………………………………… 1
       1.1 研究動機……………………………………………… 1
       1.2 研究方法與目的……………………………………… 1
       1.3 本文內容…….………………………………………… 2
    第二章 文獻探討…………………………………………………… 3
       2.1 集集地震斷層簡介…………………………………… 3
       2.2 車籠埔斷層地下構造形態…………………………… 9
       2.3 和三義斷層的關連…………………………………… 9
       2.4 通霄-埔里地震線性地震帶………………………… 14
       2.5 集集地震斷層北段之相關資料……………………… 17
    第三章 研究方法…………………………………………………  21
       3.1 實驗材料……………………………………………… 21
       3.2 實驗裝置……………………………………………… 21
       3.3 實驗流程……………………………………………… 25
       3.4 模型設計……………………………………………… 26
    第四章  實驗結果與討論………………………………………… 32
       4.1 實驗過程與記錄重點………………………………… 32
       4.2 第一組:改變斜角…………………………………… 34
       4.2.1 模型1………………………………………………  34
       4.2.2 模型2………………………………………………  37
       4.2.3 模型3………………………………………………  40
       4.2.4 模型4………………………………………………  44
       4.2.5 模型5………………………………………………  50
       4.3  第一組實驗綜合討論………………………………  54
       4.4  第二組:表面給予次弱面…………………………  59
       4.4.1 模型6………………………………………………  60
       4.4.2 模型7………………………………………………  64
       4.4.3 模型8………………………………………………  64
       4.4.4 模型9………………………………………………  69
       4.4.5 模型10……………………………………………  73
       4.4.6 模型11……………………………………………  78
       4.4.7 模型12……………………………………………… 82
       4.5  第二組實驗綜合討論………………………………  86
       4.6  第一組與第二組實驗結果綜合討論………………… 92
    第五章 實驗結果與地質、地球物理資料比對…………………  94
       5.1  實驗設計與集集地震斷層之地質及地球物理資料… 94
       5.2  地下構造與三義斷層及通霄-埔里地震帶之相關性 95
       5.3  次弱面設計與集集地震斷層北端之地質、地球物理
          資料比對……………………………………………  97
    第六章 結論………………………………………………………  98
    參考文獻……………………………………………………………  106
    ABSTRACT……………………………………………………………  111
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    Advisor
  • Rong-Kuan Yang(楊榮堃)
  • Files
  • 90622006.pdf
  • approve immediately
    Date of Submission 2003-07-16

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