The 2010-2020 'megadrought' drives reduction in lake surface area in the Andes of central Chile (32 degrees - 36 degrees S)

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dc.contributor.authorFuentealba, Magdalena
dc.contributor.authorBahamondez, Camila
dc.contributor.authorSarricolea, Pablo
dc.contributor.authorMeseguer Ruiz, Oliver
dc.contributor.authorLatorre, Claudio
dc.date.accessioned2024-01-10T12:36:59Z
dc.date.available2024-01-10T12:36:59Z
dc.date.issued2021
dc.description.abstractStudy region: Andes central Chile (32 degrees S-36 degrees S) / Lakes
dc.description.abstractStudy focus: Mountain lakes play a key role in the terrestrial freshwater reservoir, both for storage of snow melt and precipitation. Although lakes are sensitive to climate variability, the effect of global warming on water availability remains uncertain. Semiarid regions are especially sensitive to relatively small changes in temperature and precipitation as these have disproportionately large impacts on lake hydrologic budgets. Here, we mapped 12 lakes from the Andes of central Chile (32 degrees-36 degrees S) using Landsat mission and Sentinel-2 satellites images from 1984 to 2020 and compared these results with the available climate data (precipitation, temperature, and evaporation).
dc.description.abstractNew hydrological insights for the region: This approach provides a high-resolution temporal and spatial analysis for changes in lake surface over the last 36 years. Our results indicate that the number of lakes and respective surface area decrease latitudinally from south to north across central Chile, which is consistent the present-day rainfall gradient. Over the study period, lake surface areas decreased significantly between 7% and 25% during the so-called 'megadrought' (2010-2020). As lakes continue to dry up, the implications for freshwater availability are of considerable societal and environmental importance. Our results can assist with water manage-ment decisions and improve our understanding of future water availability across the region.
dc.description.funderANID
dc.description.funderANID Millennium Nucleus UPWELL
dc.description.funderFONDECYT
dc.fechaingreso.objetodigital2024-04-16
dc.format.extent15 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.ejrh.2021.100952
dc.identifier.eissn2214-5818
dc.identifier.urihttps://doi.org/10.1016/j.ejrh.2021.100952
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76716
dc.identifier.wosidWOS:000715062300001
dc.information.autorucFacultad de Historia, Geografía y Ciencia Política; Fuentealba Landeros, María Magdalena; S/I; 224898
dc.language.isoen
dc.nota.accesocontenido completo
dc.publisherELSEVIER
dc.revistaJOURNAL OF HYDROLOGY-REGIONAL STUDIES
dc.rightsacceso abierto
dc.subjectMegadrought
dc.subjectLakes
dc.subjectAndes of central Chile
dc.subjectFreshwater availability
dc.subjectNDWI
dc.subjectLAGUNA DEL MAULE
dc.subjectSATELLITE IMAGES
dc.subject20-1ST CENTURY
dc.subjectCLIMATE-CHANGE
dc.subjectDROUGHT
dc.subjectIMPACTS
dc.subjectDECLINE
dc.subjectVOLUME
dc.subject.ods06 Clean Water and Sanitation
dc.subject.ods13 Climate Action
dc.subject.odspa06 Agua limpia y saneamiento
dc.subject.odspa13 Acción por el clima
dc.titleThe 2010-2020 'megadrought' drives reduction in lake surface area in the Andes of central Chile (32 degrees - 36 degrees S)
dc.typeartículo
dc.volumen38
sipa.codpersvinculados224898
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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