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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/62621


    Title: 龜山島周邊地震活動調查及其與火山進程之可能相關性;Investigation of the Seismicity around Kueishantao Island and Its Possible Relationship with Volcanic Processes
    Authors: 柯士達;林正洪
    Contributors: 國立中央大學地球物理研究所
    Keywords: 地球科學;防災工程
    Date: 2012-12-01
    Issue Date: 2014-03-17 11:52:35 (UTC+8)
    Publisher: 行政院國家科學委員會
    Abstract: 研究期間:10108~10207;Kueishantao is a small volcanic island that lies a few kilometers offshore the Ilan coast in northeastern Taiwan. Volcanological and geochemical observations indicate that the volcanic system of Kueishantao produced its last eruption about 7000 years ago, while parts of the volcano edifice collapsed into the sea. Recently, a local seismic network consisting of 13 three-component stations has been installed along the Ilan coast and on Kueishantao island itself. The proposal first deals with the initial processing of the continuous seismological data such as identification of events, picking and initial locations. This is going to be followed by an estimation of a minimum 1D velocity model in order to obtain more constrained absolute locations. At this point it is also suggested to apply the double-difference algorithm and calculate high precision relative locations. In this way there is going to be an accurate delineation of seismicity in the area around Kuieshantao and it will be possible to make inferences of its relationship with the volcano-hydrothermal system. Special attention will be paid into detecting volcano-seismic signals (low-frequency earthquakes, or other types of volcanic tremors), since their presence is an indicator of volcanic fluid activity (gases rising from depth and hydrothermal fluids).
    Relation: 財團法人國家實驗研究院科技政策研究與資訊中心
    Appears in Collections:[地球物理研究所] 研究計畫

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