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Advances in Geosciences An open-access journal for refereed proceedings and special publications

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Adv. Geosci., 14, 117-128, 2008
https://doi.org/10.5194/adgeo-14-117-2008
© Author(s) 2008. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
 
02 Jan 2008
The 2004 Sumatra tsunami as recorded on the Atlantic coast of South America
R. N. Candella1, A. B. Rabinovich2,3, and R. E. Thomson3 1Instituto de Estudos do Mar Almirante Paulo Moreira, 253 Rua Kioto, Arraial do Cabo, RJ, 28930-000, Brazil
2P. P. Shirshov Institute of Oceanology, 36 Nakhimovsky Pr., Moscow, 117997, Russia
3Institute of Ocean Sciences, 9860 West Saanich Road, Sidney, British Columbia, V8L 4B2, Canada
Abstract. The 2004 Sumatra tsunami propagated throughout the World Ocean and was clearly recorded by tide gauges on the Atlantic coast of South America. A total of 17 tsunami records were found and subsequently examined for this region. Tsunami wave heights and arrival times are generally consistent with numerical modeling results. Maximum wave heights of more than 1.2 m were observed on the coasts of Uruguay and southeastern Brazil. Marked differences in tsunami height from pairs of closely located tide gauge sites on the coast of Argentina illustrate the importance that local topographic resonance effects can have on the observed wave response. Findings reveal that, outside the Indian Ocean, the highest waves were recorded in the South Atlantic and not in the Pacific as has been previously suggested.

Citation: Candella, R. N., Rabinovich, A. B., and Thomson, R. E.: The 2004 Sumatra tsunami as recorded on the Atlantic coast of South America, Adv. Geosci., 14, 117-128, https://doi.org/10.5194/adgeo-14-117-2008, 2008.
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