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The great tsunami of 26 December 2004: A description based on tide gauge data from Indian subcontinent and surrounding areas

DRS at CSIR-National Institute of Oceanography

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Title The great tsunami of 26 December 2004: A description based on tide gauge data from Indian subcontinent and surrounding areas
 
Creator Nagarajan, B.
Suresh, I.
Sundar, D.
Sharma, R.
Lal, A.K.
Neetu, S.
Shenoi, S.S.C.
Shetye, S.R.
Shankar, D.
 
Subject Eatrhquake
Tsunami
Sumatra
Andaman
Tide gauge
Wavelet
 
Description The Great Tsunami of 26 December 2004 is described using data from seven tide gauges in India and others from surrounding areas in the Indian Ocean. The tsunami struck the Indian east coast around 0330 UTC. The amplitude was 2 m above the tide at Chennai, Paradip, and Colombo. The east coast of India (and of Sri Lanka) was hit shortly after high tide, Tuticorin and Colombo, however, were hit shortly after low tide. The tsunami wave propagated northward along the Indian west coast. All these gauges are to the west of the earthquake zone and the detided sea levels show first a rise in sea level with the arrival of the tsunami, and then a sharp decrease. Spectral and wavelet analysis of the detided series show that the maximum amplitude was at a period of 35-45 minutes, with another maximum around 20 minutes. Along the Indian east coast, however, there is another broad peak between 1-2 hours within the first few hours after the first tsunami wave.
 
Date 2006-06-15T06:44:28Z
2006-06-15T06:44:28Z
2006
 
Type Journal Article
 
Identifier Earth Planets Space, 58, 211-215, 2006
http://drs.nio.org/drs/handle/2264/117
 
Language en
 
Format 273667 bytes
application/pdf
 
Publisher Terrapub