Climate Change Data Portal
| DOI | 10.5194/hess-22-5445-2018 |
| Recent evolution and associated hydrological dynamics of a vanishing tropical Andean glacier: Glaciar de Conejeras; Colombia | |
| Morán-Tejeda E.; Luis Ceballos J.; Peña K.; Lorenzo-Lacruz J.; López-Moreno I.J. | |
| 发表日期 | 2018 |
| ISSN | 1027-5606 |
| 起始页码 | 5445 |
| 结束页码 | 5461 |
| 卷号 | 22期号:10 |
| 英文摘要 | Glaciers in the inner tropics are rapidly retreating due to atmospheric warming. In Colombia, this retreat is accelerated by volcanic activity, and most glaciers are in their last stages of existence. There is general concern about the hydrological implications of receding glaciers, as they constitute important freshwater reservoirs and, after an initial increase in melting flows due to glacier retreat, a decrease in water resources is expected in the long term as glaciers become smaller. In this paper, we perform a comprehensive study of the evolution of a small Colombian glacier, Conejeras (Parque Nacional Natural de los Nevados) that has been monitored since 2006, with a special focus on the hydrological response of the glacierized catchment. The glacier shows great sensitivity to changes in temperature and especially to the evolution of the El Ni-o-Southern Oscillation (ENSO) phenomenon, with great loss of mass and area during El Nio warm events. Since 2006, it has suffered a 37% reduction, from 22.45 ha in 2006 to 12 ha in 2017, with an especially abrupt reduction since 2014. During the period of hydrological monitoring (June 2013 to December 2017), streamflow at the outlet of the catchment experienced a noticeable cycle of increasing flows up to mid-2016 and decreasing flows afterwards. The same cycle was observed for other hydrological indicators, including the slope of the rising flow limb and the monthly variability of flows. We observed an evident change in the daily hydrograph, from a predominance of days with a purely melt-driven hydrograph up to mid-2016, to an increase in the frequency of days with flows less influenced by melt after 2016. Such a hydrological cycle is not directly related to fluctuations of temperature or precipitation; therefore, it is reasonable to consider that it is the response of the glacierized catchment to retreat of the glacier. Results confirm the necessity for small-scale studies at a high temporal resolution, in order to understand the hydrological response of glacier-covered catchments to glacier retreat and imminent glacier extinction. © Author(s) 2018. |
| 语种 | 英语 |
| scopus关键词 | Atmospheric pressure; Catchments; Climatology; Runoff; Tropics; Freshwater reservoirs; High temporal resolution; Hydrological cycles; Hydrological indicators; Hydrological monitoring; Hydrological response; Southern oscillation; Volcanic activities; Reservoirs (water); catchment; El Nino-Southern Oscillation; glacier retreat; global warming; hydrographic survey; hydrological cycle; hydrological response; streamflow; tropical region; Colombia |
| 来源期刊 | Hydrology and Earth System Sciences
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/159880 |
| 作者单位 | Morán-Tejeda, E., Department of Geography, University of the Balearic Islands, Palma, Spain; Luis Ceballos, J., Instituto de Hidrología, Meteorología y Estudios Ambientales, Bogotá, Colombia; Peña, K., Instituto de Hidrología, Meteorología y Estudios Ambientales, Bogotá, Colombia; Lorenzo-Lacruz, J., Department of Geography, University of the Balearic Islands, Palma, Spain; López-Moreno, I.J., Pyrenean Institute of Ecology. Consejo Superior de Investigaciones Científicas, Zaragoza, Spain |
| 推荐引用方式 GB/T 7714 | Morán-Tejeda E.,Luis Ceballos J.,Peña K.,et al. Recent evolution and associated hydrological dynamics of a vanishing tropical Andean glacier: Glaciar de Conejeras; Colombia[J],2018,22(10). |
| APA | Morán-Tejeda E.,Luis Ceballos J.,Peña K.,Lorenzo-Lacruz J.,&López-Moreno I.J..(2018).Recent evolution and associated hydrological dynamics of a vanishing tropical Andean glacier: Glaciar de Conejeras; Colombia.Hydrology and Earth System Sciences,22(10). |
| MLA | Morán-Tejeda E.,et al."Recent evolution and associated hydrological dynamics of a vanishing tropical Andean glacier: Glaciar de Conejeras; Colombia".Hydrology and Earth System Sciences 22.10(2018). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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