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

Technological advances in seismic instrumentation and telecommunication permit the implementation ,.7*Hpa  
of real-time rapid response and early warning systems. During large earthquakes, such systems are {$wjO7Glp  
capable of providing from a few seconds to a few tens of seconds of warning before the arrival of yI"6Da6|y  
strong ground shaking and enable quick reports about the damage estimates to determine where @g&ct>@y  
emergency response is most needed. An earthquake early warning and rapid response system can ;t|Ii8Ne  
provide the critical information needed to minimize loss of lives and property, and to direct rescue _iir<}  
operations As part of the preparations for the future earthquake in Istanbul a Rapid Response and Early -&-Ma,M?  
Warning system in the metropolitan area is in operation. For the Early Warning system ten strong zlEX+=3  
motion stations were installed as close as possible to the fault zone. Continuous on-line data from these +>r/0b  
stations via digital radio modem provide early warning for potentially disastrous earthquakes. P3=W|81e  
Considering the complexity of fault rupture and the short fault distances involved, a simple and robust c\Q7"!e  
Early Warning algorithm, based on the exceedance of specified threshold time domain amplitude ,=#F//  
levels is implemented. The encrypted early warning signals will be communicated to the respective [_}J F}6  
end users through a “service provider” company. The users of the early warning signal will be power QC9eUYe  
and gas companies, nuclear research facilities, critical chemical factories, subway system and several pNKhc#-w  
high-rise buildings. Depending on the location of the earthquake (initiation of fault rupture) and the yp({>{u7  
recipient facility the alarm time can be as high as about 8s. For the rapid response system one hundred kYjGj,m"  
18 bit-resolution strong motion accelerometers were placed in quasi-free field locations (basement of ?]}8o}G  
small buildings) in the populated areas of the city, within an area of approximately 50x30km, to ,d{"m)r<  
constitute a network that will enable early damage assessment and rapid response information after a f>N!wgo[  
damaging earthquake. Early response information is achieved through fast acquisition and analysis of iy%ZQ[Un  
processed data obtained from the network. A shake map and damage distribution map (using aggregate wwyPl  
building inventories and fragility curves) will be automatically generated using the algorithm ;u>DNG|.  
developed for this purpose. The shake and damage maps will be conveyed to the governor’s and vuoQz\  
mayor’s offices, fire, police and army headquarters within 3 minutes using radio modem and GPRS "\3B^ e,  
communication