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Tsunamis and earthquake thrusts

by Astronuc
Tags: earthquake, thrusts, tsunamis
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Astronuc
#1
Apr5-14, 03:16 PM
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I came across an interesting video on three massive earthquakes and the thrusts that caused tsunamis.
http://www.youtube.com/watch?v=RgrjGMFJ31w

Just because an earthquake is large, i.e., mag 7 or mag 8 or greater, and in the ocean doesn't mean it will produce a tsunami. It does depend on the depth and location as well, and how much elastic energy is stored in the mass (or volume) of crust, and the displacement.
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davenn
#2
Apr6-14, 06:06 AM
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Hi Astronuc

interesting video describing why there are variations in tsunami height

from what I have so far read, this latest Chilean event produced a tsunami of only ~ 2 metres ( fortunately!!)

Would have been good to have seen what reasons they had considered specifically for the Sumatran event

cheers
Dave
Astronuc
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Apr6-14, 10:14 AM
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The earthquake off Banda Aceh was mag 9.1, so a very powerful earthquake with a large volume of displacement.

http://earthquake.usgs.gov/earthquak...4slav/#details


More on recent Indonesian earthquakes - https://www.eeri.org/category/learni...kes/indonesia/


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