Development of A Prototype of Strong Ground Motion Estimation System

Development of A Prototype of Strong Ground Motion Estimation System

Although disastrous earthquakes may not happen everyday, governments in various countries need one decision support system for managing emergency response during such events. To support such a system, the 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(SGMES) needs to obtain some relevant waveform data immediately after an earthquake event in computing the focal mechanism and in solving the earthquake rupture patterns within 30~60 minutes after an earthquake. In 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, various 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 and SA contour maps can be produced to check soil liquefactions and landslides. The response spectrums can be also produced also to check immediately the status of bridges and relevant structures.