URBAN EARTHQUAKE RAPID RESPONSE AND EARLY WARNING SYSTEMS [复制链接]

Technological advances in seismic instrumentation and telecommunication permit the implementation wXp:XZ:]T  
of real-time rapid response and early warning systems. During large earthquakes, such systems are QsxvA;7%  
capable of providing from a few seconds to a few tens of seconds of warning before the arrival of gCsN\z  
strong ground shaking and enable quick reports about the damage estimates to determine where P
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emergency response is most needed. An earthquake early warning and rapid response system can 6 %aaK|0  
provide the critical information needed to minimize loss of lives and property, and to direct rescue <]%6x[  
operations As part of the preparations for the future earthquake in Istanbul a Rapid Response and Early lr;ubBbT  
Warning system in the metropolitan area is in operation. For the Early Warning system ten strong /kyO,g$9  
motion stations were installed as close as possible to the fault zone. Continuous on-line data from these *^g]QQ  
stations via digital radio modem provide early warning for potentially disastrous earthquakes. H;_Ce'oU(  
Considering the complexity of fault rupture and the short fault distances involved, a simple and robust F4-rPv  
Early Warning algorithm, based on the exceedance of specified threshold time domain amplitude |.RyF@N`T  
levels is implemented. The encrypted early warning signals will be communicated to the respective />8A?+g9u  
end users through a “service provider” company. The users of the early warning signal will be power {*n<A{$[ m  
and gas companies, nuclear research facilities, critical chemical factories, subway system and several XP!m]\E&I  
high-rise buildings. Depending on the location of the earthquake (initiation of fault rupture) and the |uz<)  
recipient facility the alarm time can be as high as about 8s. For the rapid response system one hundred ?mC'ZYQI  
18 bit-resolution strong motion accelerometers were placed in quasi-free field locations (basement of ORP<?SG55u  
small buildings) in the populated areas of the city, within an area of approximately 50x30km, to kmTYRl )j  
constitute a network that will enable early damage assessment and rapid response information after a G na%|tUz|  
damaging earthquake. Early response information is achieved through fast acquisition and analysis of gfN=0Xj4  
processed data obtained from the network. A shake map and damage distribution map (using aggregate oDD"h,Z  
building inventories and fragility curves) will be automatically generated using the algorithm \kUQe-:he  
developed for this purpose. The shake and damage maps will be conveyed to the governor’s and !hfpa_5  
mayor’s offices, fire, police and army headquarters within 3 minutes using radio modem and GPRS ?kZ-,@h:  
communication