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dc.contributor.author Durán-Alarcón, Claudio
dc.contributor.author Gevaert, Caroline M.
dc.contributor.author Mattar, Cristian
dc.contributor.author Jiménez-Muñoz, Juan C.
dc.contributor.author Pasapera-Gonzales, José J.
dc.contributor.author Sobrino, José A.
dc.contributor.author Silva Vidal, Yamina
dc.contributor.author Fashé-Raymundo, Octavio
dc.contributor.author Chavez-Espíritu, Tulio W.
dc.contributor.author Santillán-Portilla, Nelson
dc.coverage.spatial Nevado Pastoruri
dc.coverage.spatial Coordillera Blanca
dc.coverage.spatial Ancash
dc.coverage.spatial Perú
dc.date.accessioned 2018-09-10T14:36:33Z
dc.date.available 2018-09-10T14:36:33Z
dc.date.issued 2015-04
dc.identifier.citation Durán-Alarcón, C., Gevaert, C. M., Mattar, C., Jiménez-Muñoz, J. C., Pasapera-Gonzales, J. J., Sobrino, J. A., ... Santillan-Portilla, N. (2015). Recent trends on glacier area retreat over the group of Nevados Caullaraju-Pastoruri (Cordillera Blanca, Peru) using Landsat imagery.==$Journal of South American Earth Sciences, 59,$==19-26. https://doi.org/10.1016/j.jsames.2015.01.006 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2882
dc.description.abstract The Cordillera Blanca, located in the central zone of the Andes Mountains in Peru, has shown a retreat in its glaciers. This paper presents a trend analysis of the glacier area over the groups of Nevados Caullaraju-Pastoruri from 1975 to 2010 using Landsat-5 Thematic Mapper (TM) imagery. In the case of the Nevados Pastoruri/Tuco, the study period was extended back to 1957 by using an aerial photograph taken that year. The extent of clean glacier ice was estimated using Normalized Difference Snow Index (NDSI) thresholds. Moreover, the estimation of debris-covered glacier ice was retrieved by means of a decision tree classification method using NDSI, Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST). Area estimations derived from Landsat imagery were compared to the glacier ground-truth data in 1975 and 2010. Results show a statistically significant (p < 0.05) decreasing trend over the whole study area. Total glacier area decreased at a rate of 4.5 km2 per decade from 1975 to 2010, with a total loss of 22.5 km2 (58%). Lower decreasing rates were found for the period 1987–2010: 3.5 km2 per decade with a total loss of 7.7 km2 (32.5%). In the case of the Nevados Pastoruri/Tuco, decreasing rates of clean ice extent were constant for the periods 1957–2010, 1975–2010 and 1987–2010, with values close to 1.4 km2 per decade and a total loss between 1957 and 2010 estimated at about 5 km2 (54%). This work shows an evident area decrease in the Caullaraju-Pastoruri tropical glaciers, which needs to be included in a future hydrological scenario of local adaptability and water management. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof urn:issn:0895-9811
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Glacier es_ES
dc.subject Caullaraju-Pastoruri es_ES
dc.subject Cordillera Blanca es_ES
dc.subject Landsat es_ES
dc.subject NDSI es_ES
dc.subject LST es_ES
dc.title Recent trends on glacier area retreat over the group of Nevados Caullaraju-Pastoruri (Cordillera Blanca, Peru) using Landsat imagery es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.00 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.09 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.10 es_ES
dc.identifier.journal Journal of South American Earth Sciences es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1016/j.jsames.2015.01.006 es_ES

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