Dear Visitor.

Thank you very much for your visit our site. We have renewed our simulation by comparing the tsunami amplitudes along the coasts with the measurements taken by us other tsunami survey teams.  The results of our new simulations will be available after March 16, 2005 in the following link(s).

Our field survey in Sumatra Island is documented in

 

http://yalciner.ce.metu.edu.tr/sumatra/survey

 

Our new simulation results will be ready in the following link

 

http://yalciner.ce.metu.edu.tr/sumatra/survey/simulation/index.htm

Best wishes and kind regards.   Dr. Ahmet Cevdet Yalciner yalciner@metu.edu.tr

__________________

The following part of this page has been prepared two weeks after Indian Ocean Tsunami in order to provide data based on model studies for identification of level of tsunami inundation and run up along Indian ocean coasts for the teams to go to sites for tsunami survey and reconnaissance.

 __________________

Our web site (dated on January 10, 2005), for Simulation of Indian Ocean Tsunami is presented in the following.

 

We announce our deep condolences to the people from all countries who suffered from the devastating December 26, 2004 tsunami disaster directly and/or indirectly We also dedicate all our knowledge/efforts/works and share all our results with all scientists, officials, managers, decision makers and governors for the better understanding of the this disaster and better development in preparedness and mitigation for future events.

THE MODEL STUDIES ON

DECEMBER 26, 2004 INDIAN OCEAN TSUNAMI

 

Ahmet Cevdet Yalciner, Tuncay Taymaz,, Ugur Kuran, Efim Pelinovsky, Andrey Zaitsev.

 

Research Assistants Ceren Ozer, Hulya Karakus, Gulizar Ozyurt, Ilgar Safak in

Middle East Technical University (METU) and

 

Onur Tan, Seda Yolsal in Istanbul Technical University (ITU)

 

Our closest collaborators Nobuo Shuto, Costas Synolakis, Fumihiko Imamura, Emile Okal  are acknowledged for their endless scientific support and cooperation

 

January 10, 2005, Ankara Turkey

 

 

Tsunami Propagation Model for December, 26, 2004 Tsunami event

 

The generation, propagation and coastal amplification of tsunami waves are modeled using TUNAMI N2 software which was originally authored by Fumihiko Imamura in Tohoku University Japan, and developed in Middle East Technical University by Ahmet Cevdet Yalciner, and in the University of Southern California by Costas Synolakis. It is UNESCO TIME Project Product. The model applications for Dec. 26, 2004 Indian Ocean

Tsunami event by Res. Assists. Ceren Ozer, Hulya Karakus, Gulizar Ozyurt and Ilgar Safak in Middle East Technical University (METU), Ankara-Turkey, and  Efim Pelinovsky and Andrey Zaitsev from Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia

 

We have made simulations.


 

*******************

SIMULATION 1:  

*******************

Our first estimate of the tsunami source on the date of earthquake and tsunami

(December 26, 2004) was based on the fault data

Fault Length and Width are 666km and 90 km respectively.

Strike Angle   340

Dip Angle        13

Slip Angle        55

Displacement   20 m

Focal Depth       7 km.

The initial wave has

The maximum positive amplitude   :  7.18 m

The maximum negative amplitude  :  3.42 m.

Shown in the figures (links) below

http://yalciner.ce.metu.edu.tr/sumatra/0001/faultwave.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a000.jpg

 

The sea state and propagation of the wave at different time steps

in Indian Ocean can be seen in the following figures

 

http://yalciner.ce.metu.edu.tr/sumatra/0001/a000.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a060.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a120.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a180.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a240.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a300.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/a360.jpg

 

The distribution of maximum amplitude in the Ocean throughout

simulation duration

http://yalciner.ce.metu.edu.tr/sumatra/0001/azmax-600dpi.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0001/azmax.jpg

 

The run up distributions along the Coast of Indonesia

http://yalciner.ce.metu.edu.tr/sumatra/0001/indoneziya.jpg

 

The run up distributions along the Coast of North of Thailand

http://yalciner.ce.metu.edu.tr/sumatra/0001/thailand_N.jpg

 

The run up distributions along the Coast of South of Thailand

http://yalciner.ce.metu.edu.tr/sumatra/0001/thailand_S.jpg

 

The run up distributions along the North Coast of Indian Ocean

http://yalciner.ce.metu.edu.tr/sumatra/0001/north.jpg

 

The coastlines where run up distributions are computed

http://yalciner.ce.metu.edu.tr/sumatra/0001/runup_area.jpg

 

********************

SIMULATION 2 

BY USING SPHERICAL COORDINATE

SYSTEM WITH CORIOLIS FORCE EFFECT

********************

By Andrey Zaitsev and Efim Pelinovsky from the Institute of Applied Physics,

Russian Academy of Sciences, Nizhny Novgorod, Russia

 

The same fault data given above has also been used in simulation

Initial wave

http://yalciner.ce.metu.edu.tr/sumatra/spherical/t0.jpg

 

After 2 hours

http://yalciner.ce.metu.edu.tr/sumatra/sphericalt2hours.jpg

 

Run up Distribution

http://yalciner.ce.metu.edu.tr/sumatra/spherical/ruup_area_lable.jpg

http://yalciner.ce.metu.edu.tr/sumatra/spherical/ruups_area.jpg

 

***********************

SIMULATION 7: 

***********************

New version of simulation: Simulation 7.

Animation

 

http://yalciner.ce.metu.edu.tr/sumatra/0007/sim-7-b-60dpi-600min.gif

 

Fault Length and Width are 419km and 190km respectively.

Strike Angle   329

Dip Angle          8

Slip Angle      110

Displacement   20 m

Focal Depth     25 km.

The initial wave has

The maximum positive amplitude   :  7.18 m

The maximum negative amplitude  : -3.36 m

 

It is based on the fault parameters and initial wave shown in the figure with its link below:

http://yalciner.ce.metu.edu.tr/sumatra/0007/0000-data.jpg

 

In this simulation we have used shorter length of the fault by using the fault plane solutions (by Prof. Tuncay Taymaz) and historical earthquakes (Geophysicist Ugur Kuran) of the fault zones at West of Sumatra.

 

We have put the animation of several files in the following link

about the results of recent Simulation 7.

 

 

http://yalciner.ce.metu.edu.tr/sumatra/0007/sim-7-b-60dpi-600min.gif

 

The jpeg files showing the sea state at different time steps are also shown in the following links. (The file name represents the time in minutes)

 

http://yalciner.ce.metu.edu.tr/sumatra/0007/0000.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0007/010.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0007/060.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0007/120.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0007/240.jpg

http://yalciner.ce.metu.edu.tr/sumatra/0007/360.jpg

 

The distribution of maximum positive amplitudes in Indian Ocean throughout 900 minutes simulation is in the link below

 

http://yalciner.ce.metu.edu.tr/sumatra/0007/max-0007.jpg

 

The time histories of water surface fluctuations at some gauge locations near West of Sumatra

http://yalciner.ce.metu.edu.tr/sumatra/0007/sumatrawest.jpg

 

The time histories of water surface fluctuations at some gauge locations near East of Sumatra

http://yalciner.ce.metu.edu.tr/sumatra/0007/sumatraeast.jpg

 

The time histories of water surface fluctuations at some gauge locations near Thailand

http://yalciner.ce.metu.edu.tr/sumatra/0007/thailand.jpg

 

The time histories of water surface fluctuations at some gauge locations near Burma

http://yalciner.ce.metu.edu.tr/sumatra/0007/burma.jpg

 

The time histories of water surface fluctuations at some gauge locations near Bangladesh

http://yalciner.ce.metu.edu.tr/sumatra/0007/bangladesh.jpg

 

The time histories of water surface fluctuations at some gauge locations near the border of Bangladesh and India

http://yalciner.ce.metu.edu.tr/sumatra/0007/bangladeshindia.jpg

 

The time histories of water surface fluctuations at some gauge locations near India

http://yalciner.ce.metu.edu.tr/sumatra/0007/india.jpg

 

The time histories of water surface fluctuations at some gauge locations near India East Coast

http://yalciner.ce.metu.edu.tr/sumatra/0007/indiaeast.jpg

 

The time histories of water surface fluctuations at some gauge locations near India South Coast

http://yalciner.ce.metu.edu.tr/sumatra/0007/indiasouth.jpg 

 

The time histories of water surface fluctuations at some gauge locations near Sri Lanka

http://yalciner.ce.metu.edu.tr/sumatra/0007/srilanka.jpg

 

The time histories of water surface fluctuations at some gauge locations near Maldives

http://yalciner.ce.metu.edu.tr/sumatra/0007/maldives.jpg

 

The time histories of water surface fluctuations at some gauge locations near Maldives-2

http://yalciner.ce.metu.edu.tr/sumatra/0007/maldives2.jpg

 

The time histories of water surface fluctuations at some gauge locations near North West Ocean

http://yalciner.ce.metu.edu.tr/sumatra/0007/westocean.jpg

 

The time histories of water surface fluctuations at some gauge locations near Oman

http://yalciner.ce.metu.edu.tr/sumatra/0007/umman.jpg

 

The time histories of water surface fluctuations at some gauge locations near Aden

http://yalciner.ce.metu.edu.tr/sumatra/0007/aden.jpg

 

Figure of Tidal Wave measurements for Aden

http://yalciner.ce.metu.edu.tr/sumatra/0007/mareg-11-aden.jpg

 

We acknowledge

Kassim Mohamed & Jalludin Mohamed

Observatoire Geophysique d'Arta /CERD

BP1888 Djibouti- R. of Djibouti

for providing the source of tidal gauge data for Aden

 

The time histories of water surface fluctuations at some gauge locations near Somali

http://yalciner.ce.metu.edu.tr/sumatra/0007/somali.jpg

 

The time histories of water surface fluctuations at some gauge locations near Kenya

http://yalciner.ce.metu.edu.tr/sumatra/0007/kenya.jpg

 

The time histories of water surface fluctuations at some gauge locations near Tanzania

http://yalciner.ce.metu.edu.tr/sumatra/0007/tanzanya.jpg

 

The time histories of water surface fluctuations at some gauge locations near Madagascar

http://yalciner.ce.metu.edu.tr/sumatra/0007/madagasar.jpg