STUDY OF TSUNAMI WAVES GENERATED BY LANDSLIDE MOVEMENTS ON A FLAT BOTTOM
Disasters like tsunamis are typically triggered by tectonic earthquakes, volcanic eruptions, or landslides. Tsunami waves can hit the coast with enormous energy, causing great damage. This study focuses on landslide-generated wave phenomena. The analytical formula of the linear dispersive model i...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/73061 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Disasters like tsunamis are typically triggered by tectonic earthquakes, volcanic
eruptions, or landslides. Tsunami waves can hit the coast with enormous energy,
causing great damage. This study focuses on landslide-generated wave phenomena.
The analytical formula of the linear dispersive model is used to simulate the development
of free surface waves due to bottom landslides. Various types of landslide
motion over a flat bottom depth are simulated. For the case of landslides with
constant velocity, simulation result after a long observation time, landslides with
the same area would generate the same leading wave; and this follows the far-field
leading wave theory. Next, the effect of the wave dispersion on the resulting wave
pattern is investigated. Simulation results for a relatively large water depth show
that as time increases, due to the somewhat large dispersion effect, the resulting
surface waves would disperse, so that the leading wave amplitude reduces. Finally,
for the case of landslides moving with constant acceleration, similar observations
are found; various forms of landslides with the same enclosed area would
produce almost the same leading wave, which was observed after a somewhat long
simulation time. |
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