1 / 20

2008 Iwate-Miyagi Nairiku Earthqukae

2008 Iwate-Miyagi Nairiku Earthqukae. 2008.06.14 08:43 Lat.N=38d 01.7m, Long.E=140d 52.8m Focal depth=8km Mjma=7.2 Max Ijm=6 high. Location of stations, Blue circle indicates a station where the Max PGA of 4G was observed.

dolan
Download Presentation

2008 Iwate-Miyagi Nairiku Earthqukae

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 2008 Iwate-Miyagi Nairiku Earthqukae • 2008.06.14 08:43 • Lat.N=38d 01.7m, Long.E=140d 52.8m • Focal depth=8km • Mjma=7.2 • Max Ijm=6 high

  2. Location of stations, Blue circle indicates a station where the Max PGA of 4G was observed. Inversion of dislocation with records at NIED stations indicated by dark dotts. Red star is the epicenter http://www.k-net.bosai.go.jp/k-net/topics/Iwatemiyaginairiku_080614/inversion/

  3. Aftershock locations with red circle and fault model with source mechanisms Hi-net mechanism from head wave and F-net from wave form inversion http://www.k-net.bosai.go.jp/k-net/topics/Iwatemiyaginairiku_080614/inversion/Figs/fig1.html

  4. Source inversion by tele-seismic observation http://taro.eri.u-tokyo.ac.jp/saigai/iwate/index.html#A

  5. Image of geological section with hypocenter http://www.eri.u-tokyo.ac.jp/topics/Iwate2008/tectonics.html

  6. Distribution of PGA and PGV http://www.k-net.bosai.go.jp/k-net/topics/Iwatemiyaginairiku_080614/Iwatemiyaginairiku_080614_kyoshin.htm ・

  7. Comparison with an attenuation relation

  8. Record of extremely large PGA of 4G http://www.k-net.bosai.go.jp/k-net/topics/Iwatemiyaginairiku_080614/IWTH25_NIED.pdf

  9. Record of same station but at bottom of borehole

  10. Soil profile of the station http://www.kik.bosai.go.jp/kik/ftppub/sitepdf/IWTH25-J.pdf

  11. http://www.jishin.go.jp/main/chousa/08jun_iwate_miyagi/p11.jpghttp://www.jishin.go.jp/main/chousa/08jun_iwate_miyagi/p11.jpg Expected events for active faults, Epicenter is indicated with red circle. Lines are the active faults and dark circles are event epicenters.

  12. Dislocation observed by GPS http://www.gsi.go.jp/BOUSAI/h20-iwatemiyagi/080614siryou1.pdf

  13. Active fault are indicated with red lines and epicenter is indicated with a yellow star. http://www.jishin.go.jp/main/oshirase/20080614_iwate_miyagi.htm

  14. Satellite image with red cross for epicenter Parts A and B are location where the representative land slides were occurred. http://www.jaxa.jp/projects/sat/alos/index_j.html

  15. Satellite images before (right) and after (left) the events A natural dam is existing in the left panel, so a lake appears. http://www.jaxa.jp/projects/sat/alos/img/topics_20080615_2l_j.jpg

  16. Natural dam Picture from Yomiuri Newspaper

  17. Satellite images before (right) and after (left) the events A largest land slide is existing in the left panel of 60,000,000m2 http://www.jaxa.jp/projects/sat/alos/img/topics_20080615_3l_j.jpg

  18. Volume of a land slide =1.2km×0.8km×50m≒60,000,000m3 Picture from Mainichi Newspaper

  19. Prof. Ohtsuki found fault trace for this event, sorry for all in Japanese

  20. Fault rupture found by Prof Otsuki, Tohoku Univ. http://www.chunichi.co.jp/article/feature/ntok0021/list/200806/CK2008061602000194.html

More Related