Mostrar el registro sencillo del ítem

dc.contributor.author Durán-Alarcón, Claudio
dc.contributor.author M.Gevaert, Caroline
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.date.accessioned 2018-09-10T14:36:33Z
dc.date.available 2018-09-10T14:36:33Z
dc.date.issued 2015-04
dc.identifier.govdoc index-oti2018 (NB)
dc.identifier.issn 08959811
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/2882
dc.description En: Journal of South American Earth Sciences, v. 59 (Abril 2015), p. 19–26.
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 Instituto Geofísico del Perú es_ES
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0895981115000140 es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.rights.uri info:eu-repo/semantics/restrictedAccess es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Glaciares--Perú--Ancash--Investigación es_ES
dc.subject Pastoruri, Nevado de (Ancash, Perú)--Investigación es_ES
dc.subject Cambio climático--Aspectos ambientales--Perú es_ES
dc.subject Glaciares--Factores climáticos--Perú--Ancash es_ES
dc.subject Teleconexiones (Climatología) es_ES
dc.subject Teledetección--Procesamiento de datos es_ES
dc.subject Blanca, Cordillera (Perú)--Condiciones ambientales es_ES
dc.subject Hidrología--Perú es_ES
dc.subject Climatología--Perú--Sensoramiento remoto es_ES
dc.subject Satélites Landsat--Sensoramiento remoto 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 Región andina es_ES
dc.subject.ocde Climatología es_ES
dc.subject.ocde Perú es_ES
dc.subject.ocde Zonas climáticas es_ES
dc.subject.ocde Zona glacial es_ES
dc.subject.ocde Influencia climática es_ES
dc.subject.ocde Condiciones atmosféricas es_ES
dc.subject.ocde Geología es_ES
dc.subject.ocde Geografía física es_ES
dc.identifier.journal Journal of South American Earth Sciences es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1016/j.jsames.2015.01.006 es_ES

Thumbnail

 Bloqueado

Colecciones

Mostrar el registro sencillo del ítem