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Water stable isotopes reveal the hydrological response of Costa Rican glacial lakes to climate variability
dc.creator | Esquivel Hernández, Germain | |
dc.creator | Sánchez Murillo, Ricardo | |
dc.creator | Vargas Salazar, Enzo | |
dc.creator | Quesada Román, Adolfo | |
dc.date.accessioned | 2022-12-13T17:51:58Z | |
dc.date.available | 2022-12-13T17:51:58Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | https://www.sciencedirect.com/science/article/pii/S0895981122003777?via%3Dihub | es_ES |
dc.identifier.issn | 0895-9811 | |
dc.identifier.uri | https://hdl.handle.net/10669/87921 | |
dc.description.abstract | Lakes are generally considered a key information source for understanding paleoclimate. Here, we use stable water isotopes (δ2H and δ18O) in a high-elevation tropical glacial lake to inform about modern climate variability and local hydrological conditions. We report a data set of water isotopes in precipitation and lake water collected between June 2015 and November 2020 in the Chirripó National Park, Costa Rica. Using a linear resistance model, the isotopic information coupled with lake water temperature and hydrometeorological data allowed the calculation of seasonal evaporation to inflow ratios (E/I) for Lake Ditkevi. Isotopic variations (δ18O and d-excess) reflect seasonal changes in the evaporative conditions, with E/I ratios ranging from 2.7 ± 1.3% to 10.8 ± 5.4%. Significant correlations between lake d-excess, lake water temperature, and sea surface temperature anomalies in El Ni˜no 3.4 region revealed the sensitive hydrological response of this high elevation tropical glacial lake to the cyclic deviations in the ocean-atmosphere domain of warm/cold El Niño Southern Oscillation episodes. Our findings contribute to i) a better understanding of the climatic controls on high-elevation precipitation and surface water systems in the tropics and ii) inform paleoclimate reconstructions in Central America. | es_ES |
dc.language.iso | eng | es_ES |
dc.rights | CC0 1.0 Universal | * |
dc.rights.uri | http://creativecommons.org/publicdomain/zero/1.0/ | * |
dc.source | Journal of South American Earth Sciences, 120, p. 104091 | es_ES |
dc.subject | Páramo | es_ES |
dc.subject | Stable isotopes | es_ES |
dc.subject | Glacial lakes | es_ES |
dc.subject | LAKE | es_ES |
dc.subject | WATER | es_ES |
dc.subject | PRECIPITATION | es_ES |
dc.title | Water stable isotopes reveal the hydrological response of Costa Rican glacial lakes to climate variability | es_ES |
dc.type | artículo original | es_ES |
dc.identifier.doi | 10.1016/j.jsames.2022.104091 | |
dc.description.procedence | UCR::Vicerrectoría de Docencia::Ciencias Sociales::Facultad de Ciencias Sociales::Escuela de Geografía | es_ES |
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