- 著者
- Masahiro KORENAGA Shunroku YAMAMOTO Shunta NODA Shin AOI
- 出版者
- Railway Technical Research Institute
- 雑誌
- Quarterly Report of RTRI (ISSN:00339008)
- 巻号頁・発行日
- vol.60, no.2, pp.134-139, 2019-05-01 (Released:2019-05-26)
- 参考文献数
- 9
- 被引用文献数
- 4
This article explains processes for improving the railway earthquake early warning system. These processes were introduced to use data transmitted in real time from recently developed ocean bottom seismic networks. Three mechanisms were designed to be able to exploit this data: 1) an algorithm for servers in OBS system base stations; 2) a procedure to allow transmissions between the servers and railway company receivers; and 3) a system built into the receiver to determine whether running trains need to be stopped or not. Confirmation was obtained that the proposed processes were able to reduce the risks to railways from earthquakes, because they are capable of extending the lead time before the arrival of strong seismic motion.
- 著者
- Yadab P. DHAKAL Wataru SUZUKI Takashi KUNUGI Shin AOI
- 出版者
- JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING
- 雑誌
- 日本地震工学会論文集 (ISSN:18846246)
- 巻号頁・発行日
- vol.15, no.6, pp.6_91-6_111, 2015 (Released:2015-11-25)
- 参考文献数
- 37
- 被引用文献数
- 7 7
We constructed ground motion prediction equation (GMPE) for absolute velocity response spectra in the period range of 1 to 10 s with the primary aim of providing early warning of long-period ground motions in Japan during moderate to large magnitude earthquakes. We found that the spatial variability of the observed long-period intensities can be reproduced in broad areas within a difference of one intensity by using the methodology proposed in this study that requires the magnitude and distance to be determined promptly.