Tsunami impact on weather?

[sreenesh]

Hi Friends,
Do Tsunami impact on weather, the question is because my friends
in bombay told me that the weather in bombay is too cold this year
than previous years after the Tsunami and also someone told me the first
time in Dubai snow fall happened, So any one can explain this Phenomena if
Tsunami is the cause of this.

[vinu]

Hi sreenesh,

I dont know the answer of your question. But my 'thrust' to say
anything about a topic with out 'any knowledge on it' make me to
quote the following :rolleyes:

Few days back Manoj posted a topic about the 'Physics of Tsunamis' (http://www.oceanographers.net/forums/showthread.php?t=54&highlight=Physics).
From there (also from my smeared memory of MSc class days), Tsunamis
are gravity waves, which propagate very fast in the deep ocean
(few hundres km/hr) and slowed as it get shoaled.
They does not causes the ocean currents or
water properties (like SST or Density) to advect but only
wave energy is propogating. Once it is propogated and damped/crahsed
somwhere its gone.

The changes you noticed in the climate are need NOT
the immediate result of this Tsunami. Usually (what i believe), it is the
long planetary waves in the Ocean does affect the climate over it, because
they are slow (few cm/sec) propogating long horizontal structure waves.
It cause the ocean propoerties (like SST) to advect from region to region,
(for example we can say, Kelvin wave takes 70 days to cross the entire
pacific from wes to east and causes the warm western pacific water
to accumulate over the eastern side and generate an Elnino).

Certainly, i think the tremors in the deeper ocean causes the various
internal mode to intiate. (eg. Internal Gravity waves) I am not sure the
structure of those waves and their phase speed or properties. Are they
long living waves ? Does they causes the sub-surface variability to
interact with surface due to a thermocline variability?

The impact over the weather as you noticed. (like snow fall some where
or cold under the 'gas stove', fire under the 'ice-core' etc ), may be
something else.
(please dont believe me, i will re-shape the above
message if some one say 'Tsunamis does affect the climate.)

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