Normal view MARC view ISBD view
Tipo:materialTypeLabelLibro

Quantitative landslide hazard analyses in volcanic ashes of the Chinchiná area, Colombia

Autor: Van Asch, Th.W.J.
Otros Autores: Blijenberg, H ; Terlien, M.I.J ; Van Westen, C.
Tema(s):
Resumen: In: Simposio Internacional sobre Sensores Remotos y Sistemas de Información Geográ fica (SIG)para el Estudio de Riesgos Naturales. Memoria. Santafé de Bogotá , Colombia. Instituto Geográ fico Agustín Codazzi (IGAC), 1992. Presentado en: Simposio Internacional sobre Sensores Remotos y Sistemas de Información Geográ fica (SIG)para el Estudio de Riesgos Naturales, 1; Santafé de Bogotá , 8-15 mar. 1992. In this paper de posibilities and limitations of a deterministic hazard assessment of landslides in ash covers in the Chinchina area are discussed. Ground water heights were analysed in relation to the input of daily rainfall, for standard sequencies of layers and standard slope profiles, by means of a two dimensional ground water model called SLOHYD. The propability that in a certain land unit a certain ground water height in the ash occurs, depends mainly on the probability that of occurrence of a layer sequence with a sufficient difference in Ks values between the ash and the underlying layers. A probability of failure in the ashes was assessed for different ground water heights. The calculation was done with an infinite slope probability model in ILWIS (AU). / CHINCHINA / CALDAS
Tags from this library: No tags from this library for this title. Log in to add tags.
    Average rating: 0.0 (0 votes)
Item type Current location Collection Call number Copy number Status Date due Barcode
Libros Libros Biblioteca Central
Fondo general
PA Ej. 1 No prestable

In: Simposio Internacional sobre Sensores Remotos y Sistemas de Información Geográ fica (SIG)para el Estudio de Riesgos Naturales. Memoria. Santafé de Bogotá , Colombia. Instituto Geográ fico Agustín Codazzi (IGAC), 1992. Presentado en: Simposio Internacional sobre Sensores Remotos y Sistemas de Información Geográ fica (SIG)para el Estudio de Riesgos Naturales, 1; Santafé de Bogotá , 8-15 mar. 1992. In this paper de posibilities and limitations of a deterministic hazard assessment of landslides in ash covers in the Chinchina area are discussed. Ground water heights were analysed in relation to the input of daily rainfall, for standard sequencies of layers and standard slope profiles, by means of a two dimensional ground water model called SLOHYD. The propability that in a certain land unit a certain ground water height in the ash occurs, depends mainly on the probability that of occurrence of a layer sequence with a sufficient difference in Ks values between the ash and the underlying layers. A probability of failure in the ashes was assessed for different ground water heights. The calculation was done with an infinite slope probability model in ILWIS (AU). / CHINCHINA / CALDAS

There are no comments for this item.

Log in to your account to post a comment.

Click on an image to view it in the image viewer