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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/71111

    Title: 台灣地震鏈的研究
    Authors: 陳姵妤;Chen,Pei-Yu
    Contributors: 土木工程學系
    Keywords: 地震預測;強地震鏈;chain of earthquake;earthquake prediction
    Date: 2016-07-19
    Issue Date: 2016-10-13 12:07:07 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 在觀察集集大地震前半年的地震活動時,發現集集大地震前15個小時和前4個月分別出現了一條瞬時地震鏈與一條包含了規模5以上的事件、規模4以上的事件以及規模3以上的事件的強地震鏈。推測是大地震前,因地殼處於應力集中的狀態,造成局部的弱化以及地殼整體平衡的改變,因而在其後的一段時間內產生了巨大能量釋放的大地震。
    ;A special phenomenon before the Chi-Chi earthquake in Taiwan was found when we analyzed the earthquake catalog of Taiwan. Namely, there were some ‘‘long shallow vertical chains of earthquakes’’ containing earthquake events with M<5.7 occurred before the Chi-Chi earthquake. The term ‘‘vertical chain of earthquakes’’ stands for a special set of events which happen within a certain short period of time on a vertical line underground. And the term ‘‘long shallow vertical chain of earthquakes’’ stands for the particular vertical chain of earthquakes which contains more than nine events distributed more than ten kilometers under and near the ground surface.
    A special type of long shallow vertical chain of earthquakes is studied in details. A chain of this type contains at least one event with magnitude higher than 4.8, one event with magnitude higher than 4 and one event with magnitude higher than 3. We analyze this type of chains happened in Taiwan over the last forty years. It is found that, if one (or more than one) of this type of chains has formed in Taiwan then there is a chance that an event with magnitude over six will happen within a short period of time. As a result, the appearance of this type of shallow vertical chain of earthquakes in Taiwan might be considered as a useful information for us to deal with a strong earthquake which may happen in the near future.
    Appears in Collections:[土木工程研究所] 博碩士論文

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