RED-ACT: Mar. 09, M4.5 Japan Gifu-ken Earthquake
RED-ACT Report
Real-time Earthquake Damage Assessment using City-scale Time-history analysis
Mar. 09, M4.5 Japan Gifu-ken Mino-chuseibu Earthquake
Research group of Xinzheng Lu at Tsinghua University (luxz@tsinghua.edu.cn)
First reported at 06:00, Mar. 9, 2019 (Beijing Time, UTC +8)
Acknowledgments and Disclaimer
The authors are grateful for the data provided by K-NET and KiK-net. This analysis is for research only. The actual damage resulting from the earthquake should be determined according to the site investigation.
Scientific background of this report can be found at:
http://www.luxinzheng.net/software/Real-Time_Report.pdf
1. Introduction to the earthquake event
At 01:08 09 Mar, 2019 (Local Time, UTC +9), an M 4.5 (JMA) earthquake occurred in Japan Gifu-ken Mino-chuseibu. The epicenter was located at 136.7 35.4, with a depth of 40.0 km.
2. Recorded ground motions
40 ground motions near to epicenter of this earthquake were analyzed. The names and locations of the stations can be found Table 1. The maximal recorded peak ground acceleration (PGA) is 151 cm/s/s. The corresponding response spectra in comparison with the design spectra specified in the Chinese Code for Seismic Design of Buildings are shown in Figure 1.
Figure 1 Response spectra of the recorded ground motions with maximal PGA
3. Damage analysis of the target region subjected to the recorded ground motions
Using the real-time ground motions obtained from the strong motion networks and the city-scale nonlinear time-history analysis (see the Appendix of this report), the damage ratios of buildings located in different places can be obtained. The building damage distribution and the human uncomfortableness distribution near to different stations is shown in Figure 2 and Figure 3, respectively. These outcomes can provide a reference for post-earthquake rescue work.
Figure 2 Damage ratio distribution of the buildings near to different stations
Figure 3 Human uncomfortableness distribution near to different stations
The details can be accessed at
http://www.luxinzheng.net/software/2019-03-09-Japan-4.5.html
http://www.luxinzheng.net/software/2019-03-09-Japan-4.5-Acc.html
Scientific background of this report can be found at: http://www.luxinzheng.net/software/Real-Time_Report.pdf
Table 1 Names and locations of the strong motion stations
No.Station NameLongitudeLatitude
1AIC001136.7535.2976
2AIC002136.91535.2979
3AIC004136.97435.0632
4AIC005137.20635.1979
5AIC006137.50935.2159
6AIC008137.57635.1006
7AIC009137.14635.0812
8AIC010137.4334.9803
9AIC011136.86434.9965
10AIC014137.2234.8263
11FKI004136.48735.9789
12FKI005136.17435.9067
13FKI006136.235.7731
14FKI011136.66835.9097
15GIF007137.48636.0378
16GIF011136.98135.7593
17GIF012136.48835.6365
18GIF013137.16235.6637
19GIF015136.90735.5454
20GIF016137.11935.5424
21GIF017136.57135.4829
22GIF018137.535.4887
23GIF019137.40435.4495
24GIF020136.75735.4248
25GIF02113735.4426
26GIF022136.47135.2834
27GIF023137.21635.3882
28GIF024137.38735.3009
29GIF026136.74135.5912
30MIE001136.49435.1718
31MIE002136.50735.0279
32MIE003136.63634.9704
33MIE004136.44934.8569
34SIG002136.02435.4215
35SIG003136.26435.377
36SIG007136.09635.1339
37SIG008136.29535.0701
38SIG009136.08535.0051
39SIG011136.05934.8779
40SIG012136.23134.9043
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