15 Mar 2011

Numerical modeling of Tohoku-Pacific Earthquake Tsunami (Ver.3)
K.Goto, H.Yanagisawa, H.Kawamata

1. Tohoku-Pacific Earthquake（１）USGS (http://earthquake.usgs.gov/)1

15 Mar 2011（２）Dr.Yagi’s model - version 2（http://www.geol.tsukuba.ac.jp/~yagi-y/EQ/Tohoku/）（３）Geospatial information authority of Japan（http://www.gsi.go.jp/cais/topic110313-index.html）

2

15 Mar 2011

２．Wave front inferred from the arrival time of tide gauges
・Wave-ray analysis
・Grid size (Δx = 3250m)

3

15 Mar 2011

3．Fault Parameter

Model 1

Mw
9.1

Model 29.0

Model 3

8.8

Latitude Longitude D
39.30
144.2037.18
143.1239.14
143.9439.00
143.4937.21
142.51

L20
21
16
27.7
5.9

W
400
150
220
199
176

strike
150
150
150
85
82

dip
193
195
195
202
201

slip
14
15
15
18
15

depth
81
88.6
88.6
97
81

3
10
10
10
10.1

note
(1)
(2)
(3)

※ Reference(1) http://iisee.kenken.go.jp/staff/fujii/OffTohokuPacific2011/tsunami.html(2) http://www.geol.tsukuba.ac.jp/~yagi-y/EQ/Tohoku/(3) http://www.gsi.go.jp/common/000059085.pdf

4．Tsunami model・Non-linear long wave equation
・Grid size for the model validation :Δx = 3250m
・Grid size for the tsunami propagation and inundation :Δx = 50 － 1350m

5．Initial water elevation of the tsunami(Model 1)(Model 2)(Model 3)4

15 Mar 2011

６．Model Validation(1) Model 1
Shimokita
Water Elevation (m)Water Elevation (m)Kushiro420-2-4050

100150200250

6420-2-4300

050

100150Time (min)50-5-1050

100150200

250

300

050100150

Water Elevation (m)Water Elevation (m)20-2-4150200

250

Water Elevation (m)Aburatsu
10-1-2150200

250

10-1-2100

150200250Time (min)2100300

250300Time (min)50250

Tosashimizu

Choshi

100200Time (min)

450

300

1510
50-5-10

Time (min)0250

Ayukawa
Water Elevation (m)Water Elevation (m)Hachinohe
100200Time (min)

300

350

400

450

Time (min)

5300

350

400

450

15 Mar 2011(2) Model 2
Shimokita
Water Elevation (m)Water Elevation (m)Kushiro420-2-4050

100

150200250

6420-2-40300

501001500-5-10100150200

250050100150
Time (min)Tosashimizu
Water Elevation (m)Water Elevation (m)300-10Choshi

100

250

0-53006420-2-450200

5Time (min)

0300

10

Water Elevation (m)Water Elevation (m)550250

Ayukawa

Hachinohe
100200Time (min)Time (min)150200250

210-1-250300

100

150

200

250

300

350

400

450

Time (min)Time (min)Water Elevation (m)Aburatsu
210-1-250

100

150200

250

300

350

400

450

Time (min)(3) Model 3
Shimokita
Water Elevation (m)Water Elevation (m)Kushiro420-2-4050

100

150

200

250

6420-2-40300

50100150

Water Elevation (m)Water Elevation (m)50-5-1050

100

150

200

250

050100150

Water Elevation (m)Water Elevation (m)Tosashimizu

0-2-4200

250

Water Elevation (m)Aburatsu
10-1-2150

200

250

10-1-2100

150

200

250
Time (min)2100

250300Time (min)50300Time (min)

2150

250

0-10Choshi

100

200

10300

45030020Time (min)0250

Ayukawa

Hachinohe
100200Time (min)Time (min)300350400450Time (min)

6300

350

40045015 Mar 2011

7．Tsunami propagation(1) Model 1・Snapshots of the water level
6min

12min

18min

24 min30 min36 min7

15 Mar 2011

・Maximum tsunami height02

46881015 Mar 2011(2) Model 2・Snapshots of the water level
6min

12min

18min

24 min30 min36 min9

15 Mar 2011

・Maximum tsunami height02

4610810

15 Mar 2011(3) Model 3
・Snapshots of the water level
6min

12min

18min

24 min30 min36 min11

15 Mar 2011

・Maximum tsunami height02

4612810

15 Mar 2011

9. Tsunami inundation in Sendai coast(1) Satellite image before and after the tsunami(http://www.nasa.gov/multimedia/imagegallery/image_feature_1892.html)

13

15 Mar 2011(2) Model 1・Snapshots of the water level36 min48 min60 min72 min84 min96 min14

15 Mar 2011

・Maximum tsunami height

・Satellite image after the tsunami

1515 Mar 2011

・Maximum tsunami velocity

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15 Mar 2011(2) Model 2・Snapshots of the water level36 min48 min60 min72 min84 min96 min17

15 Mar 2011

・Maximum tsunami height

・Satellite image after the tsunami

18

15 Mar 2011

・Maximum tsunami velocity

19

15 Mar 2011(3) Model 3
・Snapshots of the water level36 min48 min60 min72 min84 min96 min20

15 Mar 2011

・Maximum tsunami height

・Satellite image after the tsunami

21

15 Mar 2011

・Maximum tsunami velocity

22