Investigation of deep subsurface structure using the high dense strong motion seismograph network
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概要
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To delineate deep subsurface structure beneath Yokohama City, we analyzed the P- and S-wave traveltime data of the earthquakes observed by the high dense strong motion seismograph network for the real-time earthquake hazards mitigation system. The three-dimensional velocity structure thus obtained shows that the base rock is deeper at northern and southern part of the city, while shallower at the western part. To study the effect of deep subsurface structure on earthquake ground motion, we simulated earthquake ground motions on the ground surface using the three-dimensional velocity model. We also made the prediction maps of earthquake ground motions, called"Shake Map", for hypothetical earthquakes using this three-dimensional subsurface model. This investigation shows that a strong motion seismograph network can be effectively used for highly precise prediction of earthquake ground motion in the future.
- 一般社団法人 日本地震工学会の論文
一般社団法人 日本地震工学会 | 論文
- Scope of this issue
- Study on the Priority of Measuring against Scenario Earthquakes Based on Seismic Risk Estimation
- Investigation on Actual Disaster Responses in Local Governments in terms of Information Sharing
- Empirical Correction of Ground Motion Prediction Equations of Response Spectra at Rock Sites for Near-Field Earthquakes Considering Amplification Effect within Deep Subsurface Structure
- A Study for Estimating Suspension Time of Railway Lines Due to Earthquake