What question did this study set out to answer?

To assess the feasibility and reporting speed of a virtual subnetwork approach integrated into a regional seismic network for operational earthquake early warning.

June 1, 2002Bulletin of the Seismological Society of America

A Virtual Subnetwork Approach to Earthquake Early Warning

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To assess the feasibility and reporting speed of a virtual subnetwork approach integrated into a regional seismic network for operational earthquake early warning.
Implemented a virtual subnetwork (VSN) system across the Taiwan Central Weather Bureau seismic network.
Tracked detection accuracy and reporting latency for all regional seismic events over an operational period from December 2000 to June 2001.
Achieved 100% correct detection across N=54 monitored earthquakes during the deployment window.
Produced comprehensive earthquake alerts in an average of approximately 22 seconds post-origin time, predominantly under 30 seconds.
Provided more than 20 seconds of advance warning for regions situated over 145 km from epicenters prior to strong shear-wave arrival at approximately 44 seconds.

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Implication

Field evaluation demonstrates a 22-second average rapid-reporting time across 54 seismic events, indicating practical early-warning windows for distant metropolitan areas.

Cite This Study

Yih‐Min Wu (2002) studied this question.

synapsesocial.com/papers/6a758554e42ca79ec1e722a3 https://doi.org/10.1785/0120010217

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Implication

Field evaluation demonstrates a 22-second average rapid-reporting time across 54 seismic events, indicating practical early-warning windows for distant metropolitan areas.

A Virtual Subnetwork Approach to Earthquake Early Warning

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A Virtual Subnetwork Approach to Earthquake Early Warning

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Implication

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