Indian Ocean Disaster Sumatra Earthquake Tsunami Survey Report on Phuket, Khao Lak, Phi Phi Island...

Indian Ocean DisasterIndian Ocean DisasterSumatra Earthquake Tsunami Sumatra Earthquake Tsunami

Survey Report onSurvey Report onPhuket, Khao Lak, Phi Phi Phuket, Khao Lak, Phi Phi Island in ThailandIsland in Thailand

Kenji HARADAKenji HARADA

DRS, DPRI, Kyoto Univ.DRS, DPRI, Kyoto Univ.

MPMD-2005Jan. 15, 2005

K.HARADA, DRS, DPRI, Kyoto Univ.Thailand Group, ITST of Indian Ocean Tsunami Disaster 2004 2

By Okumura, Suzuki, DRS, DPRI, Kyoto Univ.

http://www.drs.dpri.kyoto-u.ac.jp/sumatra/

MPMD-2005Jan. 15, 2005


Contents of today’s Contents of today’s presentationpresentation

Event information of disasterEvent information of disaster EarthquakeEarthquake

Tsunami Numerical SimulationTsunami Numerical Simulation Tsunami PropagationTsunami Propagation Maximum Tsunami heightMaximum Tsunami height Topogrophic Topogrophic

Tsunami field survey around PhuketTsunami field survey around Phuket Tsunami heightTsunami height Damages by TsunamiDamages by Tsunami Casuality by TsuanmiCasuality by Tsuanmi

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Sumatra EarthquakeSumatra Earthquake Mw=9.0Mw=9.0 Date: Dec. 26, 2004 Date: Dec. 26, 2004

at 00:58:53AM(UTC), 07:58:53(Local at 00:58:53AM(UTC), 07:58:53(Local time)time)

LocationLocation Off the west coast of Northern Sumatra Off the west coast of Northern Sumatra

(3.316°N, 95.854°E)(3.316°N, 95.854°E) Depth: 30kmDepth: 30km

http://earthquake.usgs.gov/eqinthenews/2004/usslav/http://earthquake.usgs.gov/eqinthenews/2004/usslav/

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Earthquake & Earthquake & TopographyTopography

By M. Matsuyama, CRIEPI

MPMD-2005Jan. 15, 2005


Deformation, initial Deformation, initial tsunamitsunami

south north

L(km) 500 500

W(km) 200 200

depth(km) 28.6 28.6

Strike 329 360

Dip 8 8

Slip 10 10

Dislocation(m)

5.0 5.0

Mo(dyne cm) 4.0E29

Harvard Univ.

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Result 1Result 1

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Result 2Result 2

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Result 3Result 3

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Map of Survey AreaMap of Survey Area

Khao Lak

Phi Phi Is.

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Survey ResultSurvey Resulthttp://www.drs.dpri.kyoto-u.ac.jp/sumatra/

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Topography of Andaman Topography of Andaman SeaSea

-1000.0

-500.0

-2000.0

-5000 -4000 -3000 -2000 -1000 0Sea depth (m)

Sumatra Is.Sumatra Is.

Khao LakKhao LakPhuket Is.Phuket Is.

Tsunami would be propagate on shelf, after the direction was changed by characteristic topography between Phuket and north Sumatra. By the effect of topography, Tsunami height around Khao Lak would be come to higher than other coast.

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Building DamageBuilding Damage

at Khao Lak

Tsunami

Roof tileRoof tile are washed away by Tsunami

Tsunami height = Tsunami height = 8.88.8 m mfrom sea level

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Building DamageBuilding Damage RC ColumnRC Column

WallWall

•Stacked BricksStacked Bricks

•Can’t resist Can’t resist tsunami pressuretsunami pressure

at Khao Lak

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Tsunami RunupTsunami Runup

•Tsunami run up mountain foot

•Vegetation are die down by Tsunami(salt water)

at Khao Lak

Tsunami height 9.6m≒Tsunami height 9.6m≒Runup distance 300m ≒Runup distance 300m ≒from shorelinefrom shoreline

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Phi Phi IslandPhi Phi IslandN

S

Phi Phi Island has sandbar at central part.Ground Elevation of sandbar is very low(a few meter) and narrow.North side have sand beach and very North side have sand beach and very shallow bay. shallow bay. South side have Pier, and water depth of South side have Pier, and water depth of south side is deeper than north side.south side is deeper than north side.

NorthNorthSouthSouth

Tsunami

Tsunami

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Phi Phi IslandPhi Phi Island

Debris of CoralDebris of Coral are transported to north beach from north bay from north bay mouthmouth by Tsunami.

The boatThe boat is transported on central part of sandbar from from south bay port south bay port by Tsunami.

N S N S

Tsunami

Tsunami

North Beach Central part of sand hill

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Damage by Back FlowDamage by Back Flow

Road

Broken seawall

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Casualty in ThailandCasualty in Thailand

ProvinceProvince DeathDeath InsureInsured d

PhangngPhangngaa

4,1904,190 5,5975,597

KrabiKrabi 693693 1,3761,376

PhuketPhuket 260260 1,1111,111

RanongRanong 159159 246246

TrangTrang 55 112112

SatunSatun 66 1515

TotalTotal 5,3135,313 8,4578,457From HP of Thailand Embassy, Tokyo at Jan. 14, 2005.http://www.thaiembassy.jp

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Small Damage due to Small Damage due to DuneDune

SeaHill

Dune

Sea

Road

Hotels

Dune is heigher than Road.Dune would be play a part of tide wall.

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More tsunami survey information, More tsunami survey information,

Please access our Please access our HP;HP;

http://www.drs.dpri.kyoto-u.ac.jp/sumhttp://www.drs.dpri.kyoto-u.ac.jp/sumatra/atra/

and please contact me!

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SnapshotsSnapshots

MPMD-2005Jan. 15, 2005


Indian Ocean Disaster Sumatra Earthquake Tsunami Survey Report on Phuket, Khao Lak, Phi Phi Island...

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