Presentation on theme: "Japan Tsunamis Over 195 tsunamis in 1,313 years – 1 event every 6.73 years. Over 195 tsunamis in 1,313 years – 1 event every 6.73 years. Sept 20, 1498."— Presentation transcript:
Japan Tsunamis Over 195 tsunamis in 1,313 years – 1 event every 6.73 years. 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.
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
Deep ocean Assessment and Reporting of Tsunamis 1.8 m High, ~10 min period 450 NM NE Tokyo, 5685 m deep
Tsunami caused by uplift of the frontal sedimentary region on eastern margin as the island of Honshu moved 17 feet eastward. Uplift of ~25 meters Death Toll 15,093 - 5/17/2011 Missing 9,093 Total 24,186 In Shelters 115,433 PMEL Source
. 6.7 meter (22 ft) high Tsunami in 204 m deep ocean at Iwate GPS Gauge Yamazaki/Cheung UH source for Tsunami Max 25 meter uplift, -2.8 ft depression
Run-Up along coast Highest 37.9 meters = 124 feet
Red circle: run-up height Tsunami Water Levels - Blue Triangle - Run-up Height
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 4 th floor building near coast
Kashima 4.22 meter and 5.2 meter tsunami height at Kashima Port
Helicopter Views of Japan Tsunami http://www.youtube.com/watch?v=1ZpFzgUFjho
Japan Tsunami Flooding Kesennuma http://www.youtube.com/watch_popup?v=c3rqPPJPwLg
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/watch? v=-d6-l16v-fQ http://www.youtube.com/watch? v=ScjHs9bClyc
Rikuzentakata After Tsunami http://www.youtube.com/watch?v=dT3pAXYMTC4&NR=1
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/vgbmultimedia/News/Fukushimav15VGB.pdf http://martynwilliams.posterous.com/tsunami-damage-at-fukushima-daiichi
2004 Indian Ocean 2011 Japan 2004 Indian Ocean 2011 Japan Max Run-up 109 feet 125 feet Max Run-up 109 feet 125 feet Death Zone 33 feet 50 feet Death Zone 33 feet 50 feet Fritz/Meadows 33 feet Fritz/Meadows 33 feet EQ Length 1100 km 250 km EQ Length 1100 km 250 km Deaths 250-300,000 25,000 Deaths 250-300,000 25,000 To survive move to above 100 ft ASL, or above 4 th floor if you feel an earthquake or a Tsunami Alert To survive move to above 100 ft ASL, or above 4 th floor if you feel an earthquake or a Tsunami Alert
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 8/2 7/ 1883 Krakatoa Volcanic Explosion generated Tsunami Proj ec tile Impact and Explosion Generated Waves Tsuna mi Hazard for Hawaii Kai, Hawaii Hawaii T sunami Hazard from M9 Earthquake like 12/26/2004 PDF- KT A steroid Impact - Asteroid Hazard to Life on Earth Dr. Walk er Hawaii Historical Tsunami Hazard Evaluation Meadows P D F 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
Sanriku Tusnami http://www.youtube.com/watch?v=r2Pt3LdwhQo From high ground at Shizugawa High School. Tsunami overtops barrier. Horrifying and Grim.
Onagawa Tsunami Memorial Park 4 reinforced- concrete buildings overturned and transported by tsunami
Building A was a Police station overturned landward. Building B was a commercial building overturned seaward
Building C was Hotel Marusho transported 30 meter landward – owners missing Building D was Mutual Aid Association Building overturned
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 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
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