Effect of submarine canyons on tsunami heights, currents and run-up off the southeast coast of India

Seelam, Jaya Kumar, Murali, R. Mani and Baldock, T. E. (2016) Effect of submarine canyons on tsunami heights, currents and run-up off the southeast coast of India. Current Science, 111 12: 1990-2004. doi:10.18520/cs/v111/i12/1990-2004


Author Seelam, Jaya Kumar
Murali, R. Mani
Baldock, T. E.
Title Effect of submarine canyons on tsunami heights, currents and run-up off the southeast coast of India
Journal name Current Science   Check publisher's open access policy
ISSN 0011-3891
Publication date 2016-12-25
Sub-type Article (original research)
DOI 10.18520/cs/v111/i12/1990-2004
Open Access Status Not yet assessed
Volume 111
Issue 12
Start page 1990
End page 2004
Total pages 15
Place of publication Rajasthan, India
Publisher Scientific Publishers
Language eng
Abstract Tsunami numerical model studies are mostly focused on inundation and run-up onto the coast. Fewer studies have been aimed at investigating the role of submarine canyons on tsunami heights, currents and run-up. The tsunami hydrodynamics in the vicinity of submarine canyons and ridges in the Palar-Cauvery region off the southeast coast of India on 26 December 2004 is considered in this study. Numerical modelling was carried out to study tsunami heights and currents in the vicinity of the submarine canyons as well as the variation of tsunami heights at 10 m water depth. Comparisons between the tsunami wave energy density at 10 m depth and the onshore run-up height observations showed good correlation for select locations, with the run-up heights being about 3% of the wave energy density. However, the local topography in the run-up zone also strongly influences the local run-up, which reduces direct correlations between run-up and nearshore tsunami height.
Keyword Flow velocity
Numerical modelling
Run-up height
Submarine canyons
Tsunami
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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