Presentation on theme: "Dr. T.Tomita, PARI Prof. Y.Kawata, DPRI, Kyoto Univ."— Presentation transcript:
1Field Survey Report on Earthquake Tsunami Disaster of Indian Ocean ~ Sri Lanka, Jan.4 - 6, 2005 ~ Dr. T.Tomita, PARIProf. Y.Kawata, DPRI, Kyoto Univ.Prof. F.Imamura, Tohoku Univ.Dr. T.Arikawa, PARIDr. T.Yasuda, DPRI, Kyoto Univ.
2Locatgion of Epicenter and Bathymetry data USGS: U.S. Geological SurveyHav: Harvard Univ.
3Historical tsunami occurred in the Indian Ocean （Solov'iev and Go, 1975） DATELATLONMm1797/ 2/100.0°N99.0°E8.03.01833/11/242.5°N100.5°E8.32.51843/ 1/ 51.5°N98.0°E7.32.01861/ 2/161.0°N97.5°E8.51907/ 1/ 497.0°E7.52004/12/263.316°N95.854°E9.04.0
4South-West of Sri Lanka Island Survey LocationsSouth-West of Sri Lanka Island(2)ColomboJan. 4Moratuwa5.6Pana dula6.0PaiyagalaBeruwalaJan. 64.7AmbalangodaHikkaduwaDodanduwa4.0GalleJan. 5KoggalaWeligama4.9
5Galle Bay Galle Buoy Port Cottage owner testified: At first, the tide ebbed until buoy where the water depth is around 10-12m.Then, tsunami which height was 7m came into the bay.
6Galle Port The ship was launched on the quay. 6.03m 5.28m 2.70 3.04 3.332.241.70190.0m
7Eastern coast from Galle Port (1) View 1Sand on Roof is left4.79mCompletely damaged2.18Road2.612.5368.0mSand on the roof wasn’t flushed by tsunamiview 1
8Eastern coast from Galle Port (2) View 23.24mFew damageRoad0.632.61View 2
22GOSL planning of restoration SeaIIIIII0m100m300m1000mI. No constructionsII. Only permit constructions (e.g. hotels)III. Construction allowed with the permission of UDAGOSL also considers 3m elevation contour line.
23Tsunami simulation by DRS, DPRI Governing Equation Linear Shallow Water Theory inSpherical Coordinate SystemSpatial Grid Size 30 arc secondTemporal Grid Size 1.8 sBathymetry Data ETOPO2Computational Domain SE(77°52'E, 10°24'S)-NW(111°12'E, 22°56'N)Seismic Deformation Yamanaka(2004)Computed Time 6 hrsFault Parameter (Yamanaka, 2004)