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Thailand Indian Ocean Tsunami, Dec/26/2004 Tsunamis are long waves on shallow water:  (k) = [gk.tanh(hk)] 1/2  (gh) 1/2 (k  h 2 k 3 /6+…) So, response.

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Presentation on theme: "Thailand Indian Ocean Tsunami, Dec/26/2004 Tsunamis are long waves on shallow water:  (k) = [gk.tanh(hk)] 1/2  (gh) 1/2 (k  h 2 k 3 /6+…) So, response."— Presentation transcript:

1 Thailand Indian Ocean Tsunami, Dec/26/2004 Tsunamis are long waves on shallow water:  (k) = [gk.tanh(hk)] 1/2  (gh) 1/2 (k  h 2 k 3 /6+…) So, response ~  cos(kx  kct + ct h 2 k 3 /6) dk ~ Ai{(x  ct)(ct.h 2 /2) -1/3 }/(ct.h 2 /2) 1/3. Courtesy Kenji Satake (National Inst of Adv Indus. Sci & Tech, Japan)

2 2km Pre-Tsunami 2km NASA - ASTER images of Indian Ocean Tsunami, Dec/26/2004 5 Days after Tsunami; Dec/31/2004 Red: elevations within 10 meters of sea level; from SRTM ASTER: Advanced Spaceborne Thermal Emission and Reflection Radiometer SRTM: Shuttle Radar Topography Mission

3 A Tsunami Model: therefore, Since At land-fall, A rough estimate by energy conservation…

4 Flood Ebb

5 5 days 6m -6m Anchorage Kodiak Is. 100 km From Oey, Ezer, Hu, Muller-Kager, 2007 Tidal resonance length (M 2 P=12.42h), L=(P/4)(gH) 1/2 ~ 250 km Cook Inlet Study The Model Model Obs.

6 Anchorage Low Tide High Tide Terra/Aqua Data Low Tide High Tide

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