文章基本信息

标题：Hydrological droughts in the Južna Morava river basin (Serbia)
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作者：Marko Urošev ; Dragan Dolinaj ; Igor Leščešen 等
期刊名称：Geographica Pannonica
印刷版ISSN：0354-8724
电子版ISSN：1820-7138
出版年度：2016
卷号：20
期号：4
语种：English
出版社：University of Novi Sad, Department of Geography, Tourism and Hotel Management
摘要：Spatial and temporal analysis of hydrological droughts,defined by two variables:deficit and duration of drought,is presented in this paper. Time series of deficits and drought durations are derived using threshold level method for 15 hydrological stations in basin of Južna Morava (Serbia). Since Q90 was used as threshold level for drought definition,these time series are ready for frequency analysis of extreme droughts. The longest average duration of drought is observed on Visočica River at Braćevci,then on Vlasina River at Vlasotince,and shortest droughts on upstream stations of Južna Morava,Vladičin Han and Grdelica. There is a direct relationship between absolute values of drought deficits and catchment area or mean annual water discharge,while standardize deficits have similar spatial distribution as drought duration. Regional deficit index (RDI) was calculated,which enabled insight in spatial-temporal drought characteristics in defined regions,like seasons when droughts most often occur,and derivation of largest droughts,both in terms of their duration,and covered area.
关键词：hydrological drought;threshold level method;drought deficit;RDI;Južna Morava;Serbia