Real-time Seismology Masumi Yamada Kyoto University.
-
Upload
margery-phillips -
Category
Documents
-
view
222 -
download
0
Transcript of Real-time Seismology Masumi Yamada Kyoto University.
![Page 1: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/1.jpg)
Real-time Seismology
Masumi YamadaKyoto University
![Page 2: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/2.jpg)
Jim Mori
![Page 3: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/3.jpg)
Earthquake
Location of aftershocks determined(Mainshock was assumed to be the same place)
Magnitude estimated as 6-7
0min
14min
24min
1994 Northridge EQ
Jim Mori
![Page 4: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/4.jpg)
![Page 5: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/5.jpg)
2011 Tohoku EQEarthquake
P-wave detected
Location and Magnitude determinedEarthquake Early Warning issued
Observed Seismic Intensity reported
Tsunami Warning issued
0sec
19sec
27sec
3min
3.5min
![Page 6: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/6.jpg)
![Page 7: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/7.jpg)
29min
34min
Shaking arrival Tsunami arrival
Mainichi.jp
10sec
55min
Tsunami hight
![Page 8: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/8.jpg)
ProvidingEarthquake Early Warning
needs
![Page 9: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/9.jpg)
ProvidingEarthquake Early Warning
needs
seismometer
![Page 10: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/10.jpg)
Wald(2005) Seismic Stations
San Francis
co
LosAnagel
es
![Page 11: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/11.jpg)
ProvidingEarthquake Early Warning
needs
seismometer
![Page 12: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/12.jpg)
ProvidingEarthquake Early Warning
needs
communicationseismometer
![Page 13: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/13.jpg)
sensor
sensor
sensor
JapanMeteorologic
alAgency
TV
radiocell
phonetown
speaker
provider
train
factory<1sec
![Page 14: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/14.jpg)
ProvidingEarthquake Early Warning
needs
communicationseismometer
![Page 15: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/15.jpg)
ProvidingEarthquake Early Warning
needs
seismologycommunicationseismometer
![Page 16: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/16.jpg)
Kanamori (2005)
![Page 17: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/17.jpg)
Kanamori (2005)
Trade-off: Speed vs Accuracy
![Page 18: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/18.jpg)
8 warnings for M6-7 earthquakes in 3 years
…but 10 times more after March 11, 2011.
M Obs. Pred.
May 8, 2008 7.2 6 + 6 -
July 8, 2008 6.1 5 - 5 -
July 24, 2008 6.8 5 - 6 -
Sep. 11, 2008 7.1 5 +
5 -
Aug. 11, 20096.5 5 + 6 -
Oct. 30, 2009 6.8 5 - 4
Feb. 27, 2010 7.2 6 -
5 -
Mar. 14, 2010 6.7 5 -
5 -
![Page 19: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/19.jpg)
![Page 20: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/20.jpg)
64%64%
17%17%
13%13%
11
11
44
Cell phone
TV
Radio
Announce
Town speaker
Unknown Tohoku earthquakeMarch 11, 2011
![Page 21: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/21.jpg)
“Earthquake occurred off Fukushima.Prepare for strong shaking.”(Japan Meteorological Agency)
![Page 22: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/22.jpg)
Galapagos phone
Smart phone
-NTT OK-Au OK-Softbank NO
-NTT NO-Au OK-Softbank NO (iphone)
vs
![Page 23: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/23.jpg)
with EEW47%
no EEW53%
47% of cell phone
can receive EEW
JMA website, September 2010
![Page 24: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/24.jpg)
How to Use EEW ?
![Page 25: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/25.jpg)
27 bullet trains were stopped without derailments.
- March 11, 2011
![Page 26: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/26.jpg)
![Page 27: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/27.jpg)
2003 Sanriku EQ US $15 million
loss
2005 Miyagi EQ US $200k loss
$600k invested in EEW and structural improvements
OKI SEMICONDUCTOR
![Page 28: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/28.jpg)
![Page 29: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/29.jpg)
Nature.com
![Page 30: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/30.jpg)
Human
Seismometer
iSeismometer
Tsunami Warning
Your idea
![Page 31: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/31.jpg)
Thank youfor your attention.
“Real-time Seismology”Masumi Yamada @Kyoto Univ.
![Page 32: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/32.jpg)
![Page 33: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/33.jpg)
Good! Bad…
3/11 M9 3/12 M6
JMA website
Improve Location Estimation
![Page 34: Real-time Seismology Masumi Yamada Kyoto University.](https://reader036.fdocuments.net/reader036/viewer/2022062519/56649ec05503460f94bcb5f8/html5/thumbnails/34.jpg)
Real-time Seismology