Examinando por Materia "SISMOLOGÍA - INVESTIGACIONES"

Mostrando 1 - 1 de 1
  • No hay miniatura disponible
    Publicación
    Distribución espacial de corrientes de densidad piroclástica ante la eventual erupción del volcán Paramillo de Santa Rosa
    (Universidad EAFIT, 2025) Sánchez Pino, Marinela; Obando Quintero, Milton Giovanny
    The Paramillo de Santa Rosa Volcanic Complex - CVPSR - is a stratovolcano resulting from predominantly andesitic to dacitic volcanism, with medium K2O content and calc-alkaline affinity, located in the Risaralda department in Colombia. The CVPSR consists of two superimposed major volcanic edifices and a smaller structure associated with a lava dome, formed during two eruptive periods: the first from 2.3 to 0.56 million years ago, and the second from 0.56 million years ago to the Holocene; during these periods, lava flows, pyroclastic density currents, avalanches, and debris flows accumulated. This volcano is classified as active but in a state of repose, and its maximum expected eruptive events are the generation of concentrated and diluted Pyroclastic Density Currents (PDC). To understand how a concentrated pyroclastic density current would be distributed in the event of an eruption of Paramillo de Santa Rosa, the geological, geomorphological, and topographical characteristics were identified, along with seismic activity records, the volcano's eruptive history, and the distribution of products. Then, the TITAN 2D software was used, which allows for the simulation of granular flow models based on the selection of appropriate parameters. For the case study, it is evident that its distribution is uniform along the slopes, presenting average speeds of 28 m/s and approximate distances of 4 km.