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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 吳逸民 | |
| dc.contributor.author | Hsin-Yi Yen | en |
| dc.contributor.author | 顏心儀 | zh_TW |
| dc.date.accessioned | 2021-06-13T06:03:35Z | - |
| dc.date.available | 2006-07-11 | |
| dc.date.copyright | 2006-07-11 | |
| dc.date.issued | 2006 | |
| dc.date.submitted | 2006-06-19 | |
| dc.identifier.citation | Allen, R. and H. Kanamori (2003). The potential for earthquake early warning in South California, Science, 300, 786-789.
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Zhao, B. S. Huang, and W. T. Liang (2006b). Magnitude determination using initial P waves: A single-station approach, Geophys. Res. Lett., 33, L05306, doi:10.1029/2005GL025395. 辛在勤，1998：台灣地區地震預警之初探。中央氣象局氣象學報第42卷，第118-134頁。 吳逸民，1999：地震速報與預警系統之發展-台灣經驗。國立中央大學地球物理研究所博士論文。 吳逸民，2006：如何利用地震初達波從事地震預警。自然科學簡訊第十八卷第一期，第8-11頁。 高弘，2001：使用類神經網路自動判別寬頻地震資料之波相到時。中央氣象局地震技術報告彙編第30卷，第103-120頁。 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/34334 | - |
| dc.description.abstract | 大地震之發生目前難以有效地被預測，淺源大地震往往釀成災難，造成生命財產之損失。為了降低地震所帶來之災害，地震預警系統(Earthquake Early Warning, EEW)是目前經評估有效的地震減災方法，世界上已有許多國家都投入這項工作中，如美國(Kanamori et al., 1997; Allen and Kanamori, 2003; Wu et al., 2006a)、日本(Nakamura, 1988; Odaka et al., 2003)、墨西哥(Espinosa-Aranda et al., 1995)及台灣(Wu et al., 1998, 2002, 2006b; Wu and Kanamori, 2005a, 2005b)。台灣的地震預警系統可在地震發生後約20秒，對距離震央70公里以外的地區提供不同程度之預警時間，但對於距震央70公里內的地區卻無法發佈警報(Wu et al., 1998, 1999, 2002)。因此，為了改善現況，我們研究利用地震初達波(P波)特性之方法從事地震預警研究，以期能將提供警報的時間縮短至地震發生後10 秒內。
本研究從台灣寬頻地震網中，收集發生於1996年至2004年規模大於4.0且震源深度小於30公里之地震紀錄，以P波到達後3秒內之垂直分量訊號進行分析。方法上採用平均週期Tc(Kanamori, 2005)來估算地震規模，並由P波到達後3秒內之垂直分量之最大地表位移Pd(Wu and Kanamori, 2005b) 計算地震波振幅隨距離衰減之關係，利用此衰減關係亦可用來估算規模。由Voronoi cells的概念(Sambridge, 1999)及傳統定位方法可隨時間提供不同精確度之地震位置。 根據我們的分析，Tc所估計的地震規模與實際規模呈現1:1的線性關係，由Pd衰減關係所計算出的規模與實際規模亦為1:1的對應關係。將結果與前人研究(Kanamori, 2005; Wu and Kanamori, 2005a)相較，Tc與地震規模之對應呈現相當一致的趨勢。利用P波三秒內的資訊就有可能掌握地震的最後規模，符合Olson and Allen(2005)所提出之成果。 對地震的減災而言，採用Tc及Pd方法有可能將地震大小的判定時間縮至地震發生後10秒內，對於離震央30公里以外的地區提供預警。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2021-06-13T06:03:35Z (GMT). No. of bitstreams: 1 ntu-95-R93224204-1.pdf: 3498656 bytes, checksum: 037747e1c9aa7f686d0ba22016450062 (MD5) Previous issue date: 2006 | en |
| dc.description.tableofcontents | 第一章 簡介----------------------------------1
1.1 地震預警系統的歷史發展------------------2 1.2 研究動機與目的--------------------------2 1.3 各章主要內容簡介------------------------3 第二章 研究資料與方法-------------------------5 2.1 資料來源--------------------------------5 2.2 BATS的簡介------------------------------11 2.3 前人研究與研究方法----------------------12 2.3.1 規模之估算------------------------------13 2.3.2 地震位置之估算--------------------------15 第三章 研究結果------------------------------20 3.1 單一測站之分析--------------------------20 3.2 多測站之分析----------------------------24 第四章 討論----------------------------------28 第五章 結論----------------------------------33 參考文獻 -------------------------------------34 附錄一 BATS四測站之單站分析結果--------------37 附錄二 2005年中國地球物理年會發表文章--------54 附錄三 GRL期刊發表文章-----------------------62 | |
| dc.language.iso | zh-TW | |
| dc.title | 利用台灣寬頻地震網從事強震預警研究 | zh_TW |
| dc.title | Experiment on earthquake early warning for Taiwan broadband seismic network | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 94-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 龔源成,梁文宗,趙里,黃柏壽 | |
| dc.subject.keyword | 地震預警, | zh_TW |
| dc.subject.keyword | earthquake early warning, | en |
| dc.relation.page | 65 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2006-06-20 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 地質科學研究所 | zh_TW |
| 顯示於系所單位： | 地質科學系 | |
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