地震初達波強震即時警報系統之研發(Ⅲ)

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Project title/計畫英文名

地震初達波強震即時警報系統之研發(Ⅲ)

Project Number/計畫編號

MOTC-CWB-99-E-08

Translated Name/計畫中文名

地震初達波強震即時警報系統之研發(Ⅲ)

Project Principal Investigator/計畫主持人

YIH-MIN WU

Funding Organization

Central Weather Bureau, MOTC

Start date/計畫起

04-01-2010

Expected Completion/計畫迄

31-12-2010

摘要：台灣位在地震頻繁的環太平洋地震帶上，地震活動頻繁，災害性地震也經常發生。因此，地震防減災是必須持續加強的研究課題。強震即時警報系統之發展是目前最有效的減災。快速的地震資訊，除了是地震防救災反應重要的指標外，也能滿足社會大眾及新聞媒體的期待。地震預警系統所提供之訊息，更是直接提供重大工程及民生設施採取緊急地震應變的關鍵。為了增加地震預警時間，建立地震初達波監測系統是一個重要的方法，本研究已利用Earthworm系統整合即時觀測地震紀錄，並進行線上監測系統測試，目地欲提高地震預警之執行效率。另外，將地震初達波預警方法應於建築物之地震儀陣列，檢驗利用Pd值做為建築物的破壞性指標與地震預警方法在建築物上之可行性。
Abstract: As urbanization progresses worldwide, earthquakes pose serious threat to lives and properties for urban areas near major active faults on land or subduction zones offshore. Earthquake Early Warning (EEW) can be a useful tool for reducing earthquake hazards, if the spatial relation between cities and earthquake sources is favorable for such warning and their citizens are properly trained to respond to earthquake warning messages. An EEW system forewarns an urban area of forthcoming strong shaking, normally with a few sec to a few tens of sec of warning time, i.e., before the arrival of the destructive S-wave part of the strong ground motion. In this project, we would like to design a system using initial P waves for EEW purpose. A new prototype earthquake early warning system that is being developed and tested using a real-time seismographic network currently in operation in Taiwan. This system is based on the Earthworm environment which carries out integrated analysis of real-time broadband, strong-motion and short-period signals. The purpose is to provide a quick and accurate method for practical EEW system. We also apply EEW to strong-motion records from a building sensor array installed in Taitung County, Taiwan. Using Pd as an indicator for destructive earthquakes does not lead to missing or false alarms for EEW purposes.

Keyword(s)

環太平洋地震帶
災害性地震
地震初達波監測
seismic zone
damage earthquake
earthquake monitoring

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地震初達波強震即時警報系統之研發(Ⅲ)

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