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Hydrological and depositional processes associated with recent glacier recession in Yanamarey catchment, Cordillera Blanca (Peru)

dc.contributor.authorLópez-Moreno, J. I.
dc.contributor.authorValero-Garcés, B.
dc.contributor.authorMark, Bryan G.
dc.contributor.authorCondom, Thomas
dc.contributor.authorRevuelto, J.
dc.contributor.authorAzorín-Molina, C.
dc.contributor.authorBazo, J.
dc.contributor.authorFrugone, M.
dc.contributor.authorVicente-Serrano, S. M.
dc.contributor.authorCochachin Rapre, Alejo
dc.date.accessioned2018-12-20T15:28:34Z
dc.date.available2018-12-20T15:28:34Z
dc.date.issued2017-02
dc.identifier.citationLópez-Moreno, J.I., Valero-Garcés, B., Mark, B. et al. (2017) Hydrological and depositional processes associated with recent glacier recession in Yanamarey catchment, Cordillera Blanca (Peru). Science of the Total Environment 579, 272-282. doi: https://doi.org/10.1016/j.scitotenv.2016.11.107es_PE
dc.identifier.issnISSN: 0048-9697, ESSN: 1879-1026es_PE
dc.identifier.urihttps://hdl.handle.net/20.500.12543/3164
dc.descriptionFiliación institucional de autor: Alejo Cochachín Rapre / Autoridad Nacional del Agua - Unidad de Glaciología y Recursos Hídricos (ANA-UGRH), Huaraz, Perues_PE
dc.descriptionOriginal abstract: In this study, we investigate changes in the glaciated surface and the formation of lakes in the headwater of the Querococha watershed in Cordillera Blanca (Peru) using 24 Landsat images from 1975 to 2014. Information of glacier retreat was integrated with available climate data, the first survey of recent depositional dynamics in proglacial Yanamarey Lake (4600 m a.s.l.), and a relatively short hydrological record (2002–2014) at the outlet of Yanamarey Lake. A statistically significant temperature warming (0.21 °C decade- 1 for mean annual temperature) has been detected in the region, and it caused a reduction of the glacierized area since 1975 from 3.5 to 1.4 km- 2. New small lakes formed in the deglaciated areas, increasing the flooded area from1.8 ha in 1976 to 2.8 ha in 2014. A positive correlation between annual rates of glacier recession and runoff was found. Sediment cores revealed a high sedimentation rate (> 1 cm yr- 1) and two contrasted facies, suggesting a shift toward a reduction of meltwater inputs and higher hydrological variability likely due to an increasing role of precipitation on runoff during the last decades. Despite the age control uncertainties, the main transition likely occurred around 1998–2000, correlating with the end of the phase with maximum warming rates and glacier retreat during the 1980s and 1990s, and the slowing down of expansion of surface lake-covered surface. With this hydrological - paleolimnological approach we have documented the association between recent climate variability and glacier recession and the rapid transfer of hydroclimate signal to depositional and geochemical processes in high elevation Andean environments. This, study also alerts about water quality risks as proglacial lakes act as secondary reservoirs that trap trace and minor elements in high altitude basins.es_PE
dc.descriptionArtículo en período de embargoes_PE
dc.description.abstractInvestiga los cambios en la superficie glaciar y la formación de lagos en la cabecera de la cuenca del río Querococha en la Cordillera Blanca (Perú) utilizando 24 imágenes Landsat desde 1975 a 2014. Manifiesta que la información del retiro de glaciares se integró con los datos climáticos disponibles, detectando un calentamiento de temperatura estadísticamente significativo y la formación de nuevos lagos pequeños en el desierto así como una alta tasa de sedimentación, entre otros aspectos.es_PE
dc.formatapplication/pdfes_PE
dc.language.isoenges_PE
dc.publisherElsevieres_PE
dc.relation.ispartofseriesScience of the Total Environment, February 2017, Volume 579, pp 272-282es_PE
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S004896971632558X?via%3Dihub
dc.rightsinfo:eu-repo/semantics/closedAccesses_PE
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.sourceAutoridad Nacional del Aguaes_PE
dc.sourceRepositorio institucional - ANAes_PE
dc.subjectComportamiento de eventos extremos de origen glaciar y climáticoes_PE
dc.subjectGestión de riesgos de desastres en recursos hídricoses_PE
dc.subjectMonitoreo de lagunas y glaciareses_PE
dc.titleHydrological and depositional processes associated with recent glacier recession in Yanamarey catchment, Cordillera Blanca (Peru)es_PE
dc.typeinfo:eu-repo/semantics/articlees_PE
dc.identifier.doihttps://doi.org/10.1016/j.scitotenv.2016.11.107es_PE
dc.coverage.basinCuenca Santa


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