Strong Ground Motion Estimation System in NCREE

Abstract eng:
Although disaster earthquakes may not happen everyday, governments of many countries need one decision support system for managing emergency response during such events. To support such a system, Center for Research on Earthquake Engineering (NCREE) is now developing a Strong Ground Motion Estimation System. This system is designed to work with the Taiwan Earthquake Loss Estimation System (TELES) which developed by NCREE, and wish to become the prototype system for Taiwan. The Strong Ground Motion Estimation System need to get the some waveform data immediately after earthquake happen, and begin to compute the focal mechanism and to solve the earthquake rupture patterns within 30~60 minutes after earthquake. For those not monitoring remote regions and countries, this system still can fetch seismograms from global seismic network via internet after 30~60 minutes and to solve the focal mechanism and earthquake rupture patterns for additional 60 minutes. After this earthquake source resolving process, many computation techniques can be applied to make synthetic seismograms for the earthquake affected regions. Local site responses can be corrected if the site information is available. The PGA, SA contour maps can be produced for checking soil liquefactions and landslides. The response spectrums can be also produced for quickly checking the status of bridges and structures.

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