Deslizamientos submarinos en el margen continental de Palomares (Mediterráneo Occidental). Morfometría y distribución
Fecha
2022-03-07
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Jaén: Universidad de Jaén
Resumen
[ES] En este trabajo se elabora un inventario de inestabilidades sedimentarias a partir del análisis de la
morfología del margen continental de Palomares (Mediterráneo Occidental) con el objetivo de estudiar el
papel de estos procesos en la geología regional.
El análisis de datos batimétricos del margen ha permitido identificar 937 eventos que movilizan un volumen total de sedimento de aproximadamente 10.34 km3. Para cada evento se han medido distintos parámetros morfométricos relevantes para el estudio de inestabilidades.
El análisis estadístico de magnitud-frecuencia llevado a cabo indica que el conjunto de datos se puede
ajustar tanto a una potencia inversa (ajuste parcial para los dos órdenes de magnitud mayores) como a una función log-normal (ajuste de la totalidad del inventario). Éste último permite definir un tamaño de evento característico para cada zona determinado por las condiciones geomorfológicas y una varianza ligada a las características de los detonantes que afectan la región (terremotos).
[EN] In this work a regional inventory of landslides is constructed by the observation of the morphology of the continental margin of Palomares (Western Mediterranean), with the aim of studying the role of these processes in the regional geology. The analysis of the bathymetry of the margin has led to the identification of 937 events, mobilizing a total sediment volume of 10.34 km3. For each event, morphometric parameters which are considered relevant for the study of landslides have been measured. [EN] The magnitude-frecuency statistical analysis carried out shows that the data set can be fitted by both an inverse power law (partial fit for the two largest orders of magnitude) and a log-normal function (fit of the whole inventory). The latter allows to define a characteristic event size for each zone which is determined by the geomorphologic conditions and a variance related to the features of the regional triggers (mainly landslides).
[EN] In this work a regional inventory of landslides is constructed by the observation of the morphology of the continental margin of Palomares (Western Mediterranean), with the aim of studying the role of these processes in the regional geology. The analysis of the bathymetry of the margin has led to the identification of 937 events, mobilizing a total sediment volume of 10.34 km3. For each event, morphometric parameters which are considered relevant for the study of landslides have been measured. [EN] The magnitude-frecuency statistical analysis carried out shows that the data set can be fitted by both an inverse power law (partial fit for the two largest orders of magnitude) and a log-normal function (fit of the whole inventory). The latter allows to define a characteristic event size for each zone which is determined by the geomorphologic conditions and a variance related to the features of the regional triggers (mainly landslides).