Improving the coastal record of tsunamis in the ESI-07 scale: Tsunami Environmental Effects Scale (TEE-16 scale)

Lario, Javier, Bardají, Teresa, Silva, Pablo G., Zazo, Caridad y Goy, Jose Luis . (2016) Improving the coastal record of tsunamis in the ESI-07 scale: Tsunami Environmental Effects Scale (TEE-16 scale). GeologicaActa, Vol. 14, nº 2, June 2016, 179-193

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Título Improving the coastal record of tsunamis in the ESI-07 scale: Tsunami Environmental Effects Scale (TEE-16 scale)
Autor(es) Lario, Javier
Bardají, Teresa
Silva, Pablo G.
Zazo, Caridad
Goy, Jose Luis
Materia(s) Geología
Abstract This paper discusses possibilities to improve the Environmental Seismic Intensity Scale (ESI-07 scale), a scale based on the effects of earthquakes in the environment. This scale comprises twelve intensity degrees and considers primary and secondary effects, one of them the occurrence of tsunamis. Terminology and physical tsunami parameters corresponding to different intensity levels are often misleading and confusing. The present work proposes: i) a revised and updated catalogue of environmental and geological effects of tsunamis, gathering all the available information on Tsunami Environmental Effects (TEEs) produced by recent earthquake-tsunamis; ii) a specific intensity scale (TEE-16) for the effects of tsunamis in the natural environment at coastal areas. The proposed scale could be used in future tsunami events and, in historic and paleo-tsunami studies. The new TEE- 16 scale incorporates the size specific parameters already considered in the ESI-07 scale, such as wave height, run-up and inland extension of inundation, and a comprehensive and more accurate terminology that covers all the different intensity levels identifiable in the geological record (intensities VI-XII). The TEE-16 scale integrates the description and quantification of the potential sedimentary and erosional features (beach scours, transported boulders and classical tsunamites) derived from different tsunami events at diverse coastal environments (e.g. beaches, estuaries, rocky cliffs,). This new approach represents an innovative advance in relation to the tsunami descriptions provided by the ESI-07 scale, and allows the full application of the proposed scale in paleoseismological studies. The analysis of the revised and updated tsunami environmental damage suggests that local intensities recorded in coastal areas do not correlate well with the TEE-16 intensity (normally higher), but shows a good correlation with the earthquake magnitude (Mw). Tsunamis generated by earthquakes can then be considered efficient processes in the direct transference of the “energy” released by offshore seismogenic sources to the nearest coastal areas, even over distances of hundreds of kilometres (>200km). This scale, as the previous ones, is independent of the earthquake type (i.e. style of faulting) and only focuses on the environmental effects triggered by tsunamis of seismic origin.
Palabras clave tsunamis
tsunami intensity scale
coastal damage
environmental seismic intensity
Editor(es) Universidad Politécnica de Barcelona
Fecha 2016-06
Formato application/pdf
Identificador bibliuned:grupinvestGAMA-Articulos-Jlario-0009
http://e-spacio.uned.es/fez/view/bibliuned:grupinvestGAMA-Articulos-Jlario-0009
DOI - identifier 10.1344/GeologicaActa2016.14.2.6
ISSN - identifier 1695-6133
Nombre de la revista Geologica Acta
Número de Volumen 14
Número de Issue 2
Página inicial 179-193
Publicado en la Revista GeologicaActa, Vol. 14, nº 2, June 2016, 179-193
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto

 
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Creado: Wed, 17 Mar 2021, 21:14:52 CET