Geração de catálogos sintéticos de sismos para a avaliação probabilista do perigo de tsunamis.

Matias, L. M., Baptista, M. A., Omira, R. and Miranda, J. M. (2016) Geração de catálogos sintéticos de sismos para a avaliação probabilista do perigo de tsunamis. Revista Portuguesa de Engenharia de Estrutura, 3 (2). pp. 7-12.

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Abstract

Probabilistic Tsunami Hazard Assessment requires the existence of a
synthetic earthquake catalogue obeying the geodynamic framework
of the source area and a fault model for each event. Usually, we
assume a constant fault displacement, eventually filtered by a
simple closure condition. The distribution of events by magnitude
classes follows a truncated Gutenberg-Richter law with epicentres
uniformly distributed in the source domain. This approach makes that
the slip on the source structures will extend beyond the generation
domain being heterogeneous inside that domain. This contradicts
the assumption that the slip is caused by geodynamic constraints.
Here, we propose a methodology for creating synthetic earthquake
catalogues and we apply it to the Gloria Fault in the Atlantic. With
three instrumental tsunamis recorded: 08.05.1939, 25.11.1941 and
26.05.1975 [1]. Additionally, we propose a semi-empirical scaling law
for the generation of the tsunamigenic earthquakes

Document Type: Article
Additional Information: Text in Portuguese
Keywords: Tsunami Hazard, Earthquake Catalogues, PTHA
Refereed: Yes
Open Access Journal?: No
ISSN: 2183-8488
Projects: FLOWS
Date Deposited: 04 May 2018 11:23
Last Modified: 17 Dec 2018 08:19
URI: http://oceanrep.geomar.de/id/eprint/42948

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