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

Technological advances in seismic instrumentation and telecommunication permit the implementation uOGw9O-d9  
of real-time rapid response and early warning systems. During large earthquakes, such systems are ilva,WFa^  
capable of providing from a few seconds to a few tens of seconds of warning before the arrival of BRYHX.}h\A  
strong ground shaking and enable quick reports about the damage estimates to determine where :Lug7bUVD  
emergency response is most needed. An earthquake early warning and rapid response system can TBrPf-Xr  
provide the critical information needed to minimize loss of lives and property, and to direct rescue *~H Sy8s  
operations As part of the preparations for the future earthquake in Istanbul a Rapid Response and Early k: ;WtBC6j  
Warning system in the metropolitan area is in operation. For the Early Warning system ten strong S@ f9c  
motion stations were installed as close as possible to the fault zone. Continuous on-line data from these jZ3fKyp#
 
stations via digital radio modem provide early warning for potentially disastrous earthquakes. {vO9ptR;  
Considering the complexity of fault rupture and the short fault distances involved, a simple and robust Ip]KPrwp  
Early Warning algorithm, based on the exceedance of specified threshold time domain amplitude Zsh9>]ML  
levels is implemented. The encrypted early warning signals will be communicated to the respective uXq. ]ub  
end users through a “service provider” company. The users of the early warning signal will be power Pco'l#:  
and gas companies, nuclear research facilities, critical chemical factories, subway system and several gl_^V&c  
high-rise buildings. Depending on the location of the earthquake (initiation of fault rupture) and the tdaL/rRe  
recipient facility the alarm time can be as high as about 8s. For the rapid response system one hundred C{bgkzr  
18 bit-resolution strong motion accelerometers were placed in quasi-free field locations (basement of y#$CMf -q^  
small buildings) in the populated areas of the city, within an area of approximately 50x30km, to ,'iE;o{Tu  
constitute a network that will enable early damage assessment and rapid response information after a F*K_+ ?m  
damaging earthquake. Early response information is achieved through fast acquisition and analysis of c{LO6dNg\z  
processed data obtained from the network. A shake map and damage distribution map (using aggregate  _\HQvH  
building inventories and fragility curves) will be automatically generated using the algorithm |B2+{@R  
developed for this purpose. The shake and damage maps will be conveyed to the governor’s and OaZQ7BGq  
mayor’s offices, fire, police and army headquarters within 3 minutes using radio modem and GPRS zNuJjL  
communication