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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorEsper, Maria Yanina
dc.date.accessioned2019-07-03T15:30:28Z
dc.date.available2019-07-03T15:30:28Z
dc.date.issued2013
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/72739
dc.description.abstractIn this study, the frequency ratio and logistic regression models are applied and verified for the analysis of debris flow susceptibility in a portion of the Dry Frontal Andes and Occidental Preandes of San Juan at approximately 30°S latitude, through aninvestigation based on a Geographic Information System (GIS). The site under study covers an area of 2175.9 km2 with a debris flow area of 42.45 km2. For this purpose, thematic layers including debris flow inventory, lithology, elevation, slope, aspect, and solar radiation were used. The debris flow inventory map was prepared by interpreting aerial photographs and satellite images and was supported by field surveys. Lithology was extracted from an existing geological map. Slope, aspect and solar radiation were calculated from a Digital Elevation Model created from SRTM (Shuttle Radar Topographic Mission) and topographical maps. The relationship between the variables and the debris flow inventory was calculated using the frequency ratio and logistic regression models. Both models helped to produce debris flow susceptibility maps that classified susceptibility into five categories: very low, low, moderate, high and very high. Subsequently, each debris flow susceptibility map was compared with known debris flow locations and tested. The frequency ratio model (accuracy is 82.71%) was more accurate than the logistic regression model (accuracy is 75.64%) for predictons of the high and very high categories. ResumenEn este trabajo se aplican, mediante el uso de Sistemas de Información Geográfica, dos modelos estadísticos en la evaluación de la susceptibilidad del terreno a la ocurrencia de flujos de detritos, la relación de frecuencias (Fr) y la regresión logística. El área de estudio comprende un sector de Cordillera Frontal y de Precordillera Occidental a los 30°S de latitud media. Se crearon mapas de elevación, pendiente, insolación, orientaciones, estratigrafía y un inventario de flujos de detritos. Este último, a partir de la interpretación y análisis digital de fotografías aéreas e imágenes satelitales. La estratigrafía fue obtenida a partir de cartas geologicas preexistentes. Las pendientes, orientaciones e insolación fueron calculadas, a partir de un modelo digital de elevaciones. Los mapas de susceptibilidad generados han sido reclasificados en cinco categorías: muy baja, baja, moderada, alta y muy alta. Finalmente, estos mapas, fueron validados espacialmente y como resultado se observa que el modelo Fr predice mejor (82,71%) que la regresión logística (75,64%) para las clases alta y muy alta.
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUNIVERSIDAD NACIONAL DE COLOMBIA
dc.relationhttp://revistas.unal.edu.co/index.php/esrj/article/view/38925
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal
dc.relation.ispartofEarth Sciences Research Journal
dc.relation.ispartofseriesEarth Sciences Research Journal; Vol. 17, núm. 2 (2013) Earth Sciences Research Journal; Vol. 17, núm. 2 (2013) 2339-3459 1794-6190
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.titleDebris flow susceptibility mapping in a portion of the andes and preandes of san juan, argentina using frequency ratio and logistic regression models
dc.typeArtículo de revista
dc.type.driverinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.eprintshttp://bdigital.unal.edu.co/37214/
dc.identifier.eprintshttp://bdigital.unal.edu.co/37214/2/
dc.relation.referencesEsper, Maria Yanina (2013) Debris flow susceptibility mapping in a portion of the andes and preandes of san juan, argentina using frequency ratio and logistic regression models. Earth Sciences Research Journal; Vol. 17, núm. 2 (2013) Earth Sciences Research Journal; Vol. 17, núm. 2 (2013) 2339-3459 1794-6190 .
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalDebris flows susceptibility
dc.subject.proposalGIS
dc.subject.proposalSan Juan
dc.subject.proposalArgentina
dc.type.coarhttp://purl.org/coar/resource_type/c_6501
dc.type.coarversionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.contentText
dc.type.redcolhttp://purl.org/redcol/resource_type/ART
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2


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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit