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Tsunami wave propagation in the Arabian Sea and its implications on run-up/inundation characteristics along the Kerala coast

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Title Tsunami wave propagation in the Arabian Sea and its implications on run-up/inundation characteristics along the Kerala coast
 
Creator Kurian, N P
Praveen, S S
 
Subject Tsunami
Run-up
Inundation
Kerala coast
Wave transformation
 
Description 531-540
December 2004 tsunami generated by the M9.3 Sumatra-Andaman earthquake devastated many parts of the Kerala coast
of southwest India,
though it was in the shadow zone of that tsunami. Post-tsunami field survey and
sea level data provided a rare opportunity for the study of wave transformation
characteristics along this coast. A review of the available studies on the
effects of 2004 tsunami wave propagation like the observed focusing/defocusing,
number and arrival times of waves along the Kerala coast is undertaken in this
paper. The important processes identified to be responsible for the observed
run-up and inundation are refraction, diffraction, reflection, and total internal
reflection. Water level variations from the third day onwards are
attributed to energy trapping on the continental shelf and secondary
undulations. In addition, the implications of the wave propagation characteristics
on tsunami run-up and inundation along the Kerala coast for the two probable
sources of tsunami viz. Sumatra and Makran are
examined through numerical modeling. It is found that the central and northern
sectors of the coast are more hazard prone to the Makran than Sumatra
for the same rupture intensity.
 
Date 2011-01-04T08:56:25Z
2011-01-04T08:56:25Z
2010-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/10800
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.39(4) [December 2010]