Relación entre la complejidad estructural frágil y la distribución espacial de la sismicidad en tres regímenes tectónicos diferentes (Sur de Centro América)

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Muñoz Martín, Alfonso and Arcila, M. and Pérez López, Raúl and Rodríguez Pascua, Miguel Angel and Vicente Muñoz, Gerardo de (2000) Relación entre la complejidad estructural frágil y la distribución espacial de la sismicidad en tres regímenes tectónicos diferentes (Sur de Centro América). Geotemas, 1 (4). pp. 341-344. ISSN 1576-5172

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Abstract

Fracturation process is the main geological mechanism for earthquakes generation as well as their magnitude and spatial distribution. In this work we analyze the correlation among a geometric, cinematic and dynamic fault-slip analysis with the magnitude frequency distribution (Ms) and the epicentral setting into three different tectonic areas. In order to compare all these parameters these areas have the same surface (2°x2°) and a similar number of epicentres. The brittle structural complexity has been defined by means an index which depends on the number of active structures as well as the different type of active faults under the present-day stress tensor. The obtained results seem indicate that a bigger index of brittle structural complexity has a good relationship with an increasing of the "b" value and with a bigger complexity in the spatial distribution of earthquakes defined by the fractal dimension (capacity dimension, Dcap).


Item Type:Article
Uncontrolled Keywords:seismicity, Fractal analysis, Stress inversion, Centro América, Structural-complexity index
Subjects:Sciences > Geology > Geodynamics
Sciences > Geology > Seismology
ID Code:61580
Deposited On:20 Jul 2020 09:40
Last Modified:20 Jul 2020 09:40

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