Japan Tsunamis

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Japan Tsunamis

• Over 195 tsunamis in 1,313 years 1 event every
  6.73 years.

Sept 20, 1498 8.6 M earthquake Great Buddha of
Kamakura cast in bronze in 1252, 103 tons, 44
feet high, eyes 3 feet apart, located at 50 feet
ASL and ½ mile from shore. Buddha moved by
tsunami from its original site and temple
destroyed.
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3/1/1973
Ancient Tsunami Markers
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3/11/2011 Earthquake - CalTech
Japan Trench where subducting Pacific Plate is
overridden by Okhotsk Plate. Fault slip 8-meter
contours 50 m max uplift 250 km length,
with 50-100 km over 30 m uplift
Instead of saying a large earthquake wouldnt
happen there, we should have said we didnt
know. Hiroo Kanamori
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1.8 m High, 10 min period 450 NM NE Tokyo, 5685
m deep
Deep ocean Assessment and Reporting of Tsunamis
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Tsunami caused by uplift of the frontal
sedimentary region on eastern margin as the
island of Honshu moved 17 feet eastward.
PMEL Source
Death Toll 15,093 - 5/17/2011 Missing
9,093 Total 24,186 In
Shelters 115,433
Uplift of 25 meters
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Yamazaki/Cheung UH source for Tsunami Max 25
meter uplift, -2.8 ft depression
6.7 meter (22 ft) high Tsunami in 204 m deep
ocean at Iwate GPS Gauge
.
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Run-Up along coast Highest 37.9 meters 124 feet
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Red circle run-up height
Tsunami Water Levels - Blue Triangle - Run-up
Height
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Miyako Tsunami Barrier
Tsunami Height 11.5 meter, Seawall 7.6
meter Run-up heights of 19.5 and 25.5 meter,
Over roof of 4th floor building near coast
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Miyako Tsunami
http//www.youtube.com/watch?vvoBsihraeRONR1
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Whirlpool
Natori wave strikes homes 901 dead, 145 missing
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Natori
Tsunami height 12 meter near Sendai airport 9
meter near fishing port
Kesennuma
Tsunami Heights 9.10-14.7 meters, 16-22 meter
run-up 930 dead, 604 missing
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8.5 meter tsunami height at Miyako tide gauge ,
412 dead, 355 missing8.0 meter at Ofunatonear
Tsunami source314 dead, 150 missing
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Rescue from Roof
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People on Beer Factory Roof
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Kamaishi
7-9 meter tsunami height
937 dead, 508 missing
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Sendia Airport
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Sendai Airport
Sendia Airport 3rd floor
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Arahama
9.3 meter tsunami height
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Fujitsuha
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Ishinomaki
5 meter in Harbor 16 m runup Ogachi-machi 2964
dead, 2770 missing
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Oshika
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Kashima
4.22 meter and 5.2 meter tsunami height at
Kashima Port
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Helicopter Views of Japan Tsunami
http//www.youtube.com/watch?v1ZpFzgUFjho
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Japan Tsunami Flooding Kesennuma
http//www.youtube.com/watch_popup?vc3rqPPJPwLg
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Rikuzentakata
The coastline has been totally reshaped. A long
barrier beach with well-vegetated land is almost
completely gone. North of that flood water sits
on agricultural fields. A 6.5 meter high sea wall
was overtopped by a 13 meter high wave, 80 of
8,000 houses were swept away. Over 18,000 lost
out of 26,000. The harbor gate failed to shut
and 45 firemen where swept away while attempting
to close them manually. http//www.youtube.com/wat
ch?v-d6-l16v-fQ http//www.youtube.com/watch?vSc
jHs9bClyc
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Rikuzentakata Tsunami
http//www.youtube.com/watch?vScjHs9bClyc
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Rikuzentakata Failed Gate
http//www.youtube.com/watch?v-d6-l16v-fQ
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Rikuzentakata After Tsunami
http//www.youtube.com/watch?vdT3pAXYMTC4NR1
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Fukushima Nuclear Power Plant A 150 foot high
splash as Tsunami impacts the turbine building,
passes over its roof and strikes adjacent reactor
building. The lower height structures including
the diesel generators are already submerged
Plant had a 19 foot high levee. The tsunami wave
height was 46 feet. http//www.vgb.org/vgbmultime
dia/News/Fukushimav15VGB.pdf http//martynwilliam
s.posterous.com/tsunami-damage-at-fukushima-daiich
i
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Fudai, Japan and its 3000 residents survived
because of a 51 foot (15.5 meter) floodgate
Run-up of 66 feet (20 meter) on gate towers
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Source
SWAN Numerical Model of Tsunami reaching Hawaii
2 meter contour
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----0 Tide ---
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Makaha Beach Mark Suiso
9 Feet Runup
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Dan Walkers North Shore Survey
17.5 ft
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Haleiwa Harbor7 Foot Run-up
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Keehi Harbor
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Keehi Harbor70 boats damaged or lost
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KonaVillage HotelHales
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Kealakekua Bay
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Kealakekua Bay
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Napoopoo
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Napoopoo
16 feet runup -Walker
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Napoopoo
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Kona, Hawaii Tsunami
http//www.youtube.com/watch?v91Wh0_yNJhc
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Crescent City8 ft high waves
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2004 Indian Ocean
2011 Japan

• Max Run-up 109 feet 125
  feet
• Death Zone 33 feet 50
  feet
• Fritz/Meadows 33 feet
• EQ Length 1100 km 250 km
• Deaths 250-300,000 25,000
• To survive move to above 100 ft ASL, or above
  4th floor if you feel an earthquake or a Tsunami
  Alert

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www.MCCOHI.COM TSUNAMI Science and Hawaii Hazards
PowerPoint Files PowerPoints with Movies are
available on NMWW DVD 12/26/2004 Indian Ocean
Tsunami - 300,000 Deaths 7/8/1955 Lituya Bay 1600
ft High Tsunami 8/27/1883 Krakatoa Volcanic
Explosion generated Tsunami Projectile Impact and
Explosion Generated Waves Tsunami Hazard for
Hawaii Kai, Hawaii Hawaii Tsunami Hazard from M9
Earthquake like 12/26/2004 PDF- KT Asteroid
Impact - Asteroid Hazard to Life on Earth Dr.
Walker Hawaii Historical Tsunami Hazard
Evaluation Meadows PDF Report on Hawaii Tsunami
Zone Hazards PDF 6/2010 PACON Paper on Hawaii M9
Tsunami Hazards 6/2010 PACON PowerPoint on Hawaii
M9 Tsunami Hazards 3/11/2011 Honshu Tsunami
PowerPoint Tsunami Hazard to Hawaii from
Landslides and Asteroids
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Sanriku Tusnamihttp//www.youtube.com/watch?vr2P
t3LdwhQo
From high ground at Shizugawa High
School. Tsunami overtops barrier. Horrifying and
Grim.
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Onagawa Tsunami Memorial Park4
reinforced-concrete buildings overturned and
transported by tsunami
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• Building A was a Police station overturned
  landward.

Building B was a commercial building overturned
seaward
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Building C was Hotel Marusho transported 30 meter
landward owners missing

• Building D was Mutual Aid Association Building
  overturned

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Onagawa Tsunami Memorial Park

• Town decided to leave four reinforced-concrete
  buildings overturned by tsunami in order to make
  future generations aware of tsunami disaster and
  hazard and establish a Tsunami Museum