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The Indian Ocean Tsunami
The tsunami generated near
Sumatra on 26 December 2004, ravaging the coasts in South and South-East Asia, is
the most devastating tsunami in several hundred years (see figure).
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Videos and animations |
Links |
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Tsunami Model, Snapshot (pdf) |
Two alternative models showing
snapshots of the wave at various times can be downloaded
below. In the first model, the initial wave is modelled with
both an elevation and a wave through, while the second are
modelled with only elevated sea surface.
Download file #1
Download file #2 |
Tsunami Model, Video animation |
Animations of the tsunami
propagation over the Indian Ocean can be downloaded below.
Animations zooming on the eastward and westward propagating
waves are also provided, together with the wave hitting
Sri-Lanka.
An alternative model is also provided.
Note: If the files do not automatically
open in your
media player, please right-click and choose "save as.."
to download the file to your hard-drive.
Download
file #1 (Full version)
Download file #2 (Sri Lanka)
Download file #3 (Eastward)
Download file #4 (Westward)
Download
file #5 (Alternative) |
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Files and presentations |
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Tsunamis
Tsunamis (large waves formed by rapid mass
movements) are a secondary effect of geological events like earthquakes,
submarine slides and rock falls in fjords and lakes.
Other large tsunamis are the 1883 Krakatau
tsunami, and the 1896 tsunami in Japan, resulting in more than 36 000
and 27 000 fatalities respectively. In the 1990’s, four tsunamis ravaged
the coast of Nicaragua, Indonesia, Japan and Papua New Guinea causing
loss of 4 000 lives. In Norway, the three most severe known events,
leading to the deaths of 174 people altogether, did all occur in the
twentieth century (Loen 1905, 1936; Tafjord 1934). Future catastrophes
could be mitigated by tsunami hazard evaluation from
statistics and geological analysis, by risk analyses from studies of
slide dynamics, tsunami propagation and coastal impact, and by tsunami
warning systems.
The International Centre for Geohazards (ICG)
has expertise in studies of the generation, propagation and run-up of
tsunamis. A large on-going activity at ICG is related to the potential
effects of various types of tsunamis. |
