Abstract
Recently, magnitude of earthquake and location of epicenter have come to be estimated urgently in 3-4 seconds based on the observed data of P-wave. Earthquake information estimated urgently is termed the early earthquake warning. And, , an arrival time and an intensity of S-wave can be estimated and informed before an attack of main shock. In this study, we have developed an immediate evaluation method for earthquake damage of dams by combining the early earthquake warning and a 3-D dynamic analysis. As a result, the earthquake damage of dams can be evaluated by the method proposed within one second. This method is useful to mitigate not only human disaster but also physical damage by earthquakes.
