期刊名称：Cuadernos de Geografía: Revista Colombiana de Geografía
印刷版ISSN：2256-5442
出版年度：2018
卷号：27
期号：1
页码：146-163
DOI：10.15446/rcdg.v27n1.56485
语种：Spanish
出版社：Universidad Nacional de Colombia, Facultad de Ciencias Humanas, Departamento de Geografía
摘要：The study evaluated the intensity and frequency of droughts in the El Cielo Biosphere Reserve and compared their inter-annual variability using monthly rainfall records between 1922 and 2012. Droughts were quantified as the relative decrease of the monthly precipitation polygon during the rainy season. 86% of the summers analyzed by considering eleven stations featured droughts. The intensity of the drought was low in 55.6% of those summers, medium in 23.1%, and severe in 57%. The droughts have a cyclic behavior, with periods of nine years: they begin with low intensity, increase to medium or severe intensity, and then decrease to low. Trend analysis does not show an increase the phenomenon.
其他摘要：The study evaluated the intensity and frequency of droughts in the El Cielo Biosphere Reserve and compared their inter-annual variability using monthly rainfall records between 1922 and 2012. Droughts were quantified as the relative decrease of the monthly precipitation polygon during the rainy season. 86% of the summers analyzed by considering eleven stations featured droughts. The intensity of the drought was low in 55.6% of those summers, medium in 23.1%, and severe in 57%. The droughts have a cyclic behavior, with periods of nine years: they begin with low intensity, increase to medium or severe intensity, and then decrease to low. Trend analysis does not show an increase the phenomenon.
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