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Ánalisis de susceptibilidad de flujos de detritos en el Parque Provincial Aconcagua, Mendoza, Argentina

Authors: Alvarez, María Alisa; Mastrantonio, Leandro; Moreiras, Stella M.;

Ánalisis de susceptibilidad de flujos de detritos en el Parque Provincial Aconcagua, Mendoza, Argentina

Abstract

Los flujos de detritos representan potenciales peligros geológicos que amenazan a la comunidad en el Parque Aconcagua. Estos procesos se generan en pendientes abruptas alcanzando grandes velocidades y volúmenes, siendo su principal causa histórica la saturación de los sedimentos o rocas a partir del deshielo en épocas estivales. En este trabajo se evalúa la susceptibilidad a la ocurrencia de flujos de detritos en dicha reserva en función de factores como litología, pendiente, altura, orientación de las laderas y presencia de vegetación. Estas variables se analizaron a través de superposición de mapas temáticos y un mapa inventario de flujos de detritos históricos en el entorno de un SIG. Se utilizó el modelo de base física SINMAP y métodos estadísticos de regresión logística y Wi, obteniendo diferentes mapas de susceptibilidad que fueron validados espacialmente con un mapa inventario de control. Todos los modelos presentaron buen desempeño, aunque SINMAP presentó diferencias en la zonificación con respecto a los modelos estadísticos, siendo la regresión logística la metodología más apropiada para la valoración de la susceptibilidad.

Debris flows occurrence represents a potential geological hazard threatening community of the Aconcagua Park. These events are generated on steeper slopes reaching high velocities and great volume. Main historical cause of events is water saturation of sediments or rocks due to precipitation, snow thawing or permafrost degradation during warmer seasons. This paper focuses in the analysis of debris flow susceptibility considering conditioning factors such as lithology, slope, elevation, slope orientation and vegetation presence. These variables were analyzed through superposition of thematic maps and an inventory map of historical debris flows in a GIS environment. A physical model (SINMAP) and statistical methods of logistic regression and Wi were applied obtaining three different models spatially validated with inventory control map. The models showed good performance, even though the SINMAP shows differences in the zoning comparing with statistician ones, being logistical regression the more proper method for susceptibility assessment.

Fil: Moreiras, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina

Fil: Alvarez, María Alisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina

Fil: Mastrantonio, Leandro Eloy. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina

Country
Argentina
Keywords

flujos de detritos, S, Conditioning factors, factores condicionantes, Agriculture, peligrosidad espacial, TP368-456, Peligrosidad espacial, Spatial hazard, Food processing and manufacture, Flujos de detritos, Debris flows, Factores condicionantes, https://purl.org/becyt/ford/1.5, https://purl.org/becyt/ford/1

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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