NDLI: Influence of geomorphology and bathymetry on the effects of the 2004 tsunami at Colachel, South India

Content Provider	Springer Nature Link
Author	Hentry, C. Chandrasekar, N. Saravanan, S. Dajkumar Sahayam, J.
Copyright Year	2010
Abstract	The paper reports a study of the effects of the 26th December 2004 tsunami on a 3 km length of coastline in southern India. GIS maps were prepared based on field surveys and accounts given by eye-witnesses and survivors. It is concluded that the main height and run-out of the wave were much affected by the on-shore topography and off-shore bathymetry. Where the water immediately off-shore is deepest, the wave was highest, reaching some 10 m. The extent of the inundation is exacerbated by the presence of creeks/estuaries, where it extended to a kilometer inland, and minimized by the presence of a rocky coastline. Recommendations are made to mitigate the hazard.L’article présente une étude sur les effets du tsunami du 26 décembre 2004 sur une côte de 3 km de longueur de l’Inde du sud. Des cartes sur support SIG ont été préparées sur la base de reconnaissances de terrain et de récits de témoins oculaires et de survivants. On conclut que la hauteur et la distance d’arrêt de la vague ont été beaucoup affectées par la bathymétrie en mer et la topographie à terre. Lorsque la profondeur d’eau en mer est la plus importante, la vague était la plus haute, atteignant 10 m. L’extension de la zone inondée est exacerbée par la présence d’anses et d’estuaires, atteignant dans ce cas une distance d’un kilomètre, et diminuée par la présence d’une côte rocheuse. Des recommandations sont faites afin de limiter les effets de cet aléa.
Starting Page	431
Ending Page	442
Page Count	12
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	69
Issue Number	3
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-07-09
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bathymétrie du proche rivage Topographie Géomorphologie Tsunami Geoecology/Natural Processes Nature Conservation Geoengineering, Foundations, Hydraulics Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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