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Título del libro: Landslide Science And Practice: Landslide Inventory And Susceptibility And Hazard Zoning
Título del capítulo: Gravitational processes in the eastern flank of the nevado de toluca México

Autores UNAM:
JOSE FERNANDO ACEVES QUESADA; VICTOR MANUEL MARTINEZ LUNA; GABRIEL LEGORRETA PAULIN;
Autores externos:

Idioma:
Inglés
Año de publicación:
2013
Palabras clave:

Consolidated materials; Debris flow deposits; Geomorphologic changes; Mountainous terrain; Multi Criteria Analysis; Multi-criteria evaluation; Nevado de Toluca Volcano; Trans-Mexican Volcanic Belt; Debris; Deposits; Geographic information systems; Hazards; Models; Volcanoes; Landslides


Resumen:

Landslides in volcanic mountainous terrains covered by poorly consolidated materials are common in Mexico. This investigation illustrates the landslides and geomorphologic changes of debris flow deposits in the town of Santa Cruz Pueblo Nuevo, State of Mexico, by using a multicriteria analysis in Geographic Information Systems (GIS) to obtain a potential hazard map. The volcano has the fourth-highest elevation in Mexico (4,662 m a.s.l.) and it is in the geologic province of the Transmexican Volcanic Belt in the center of Mexico. The volcano is prone to landslides due to its loose vulcanoclastic sediments that are dragged by the streams and torrents during the rainy season. The basin extends from the rim of the volcano to the foothills at an altitude of 2,850 m a.s.l. Unstable areas are mainly along first-order tributary streams and meander bends developed on lahars, pyroclastic flows, and pumice fall deposits whose stability has decreased in the basin. The unstable areas frequently create debris flows and debris slicing affecting the human settlements. On June 24, 1940, a large debris flow partially destroyed the town of Santa Cruz Pueblo Nuevo. Today, the town is settled in the alluvial fan of the old debris flows deposit. It is a highly probable that the town will be affected again by landslides and debris flows. As a prevention to future debris flow, have been constructed walls of containment (gabions) along the principal channel of the river La Ciénaga, nevertheless in every rainy season the gabions are saturated and frequently destroyed, which shows the intense activity of the remove gravitational processes. © Springer-Verlag Berlin Heidelberg 2013.


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