منابع مشابه
Hydrological Aspects of the Drought Event in Nigeria-1972/1973
The drought event which reached severe levels in 1972 and 1973 caused a major disaster in the Sahalian and sub-Sahalian zones in Africa. This disaster has drawn attention to the need for data surveys and detailed studies for meaningful long-term measures to combat the effects of future droughts. The study reported in this paper is an attempt to assess the hydrological aspects of the drought eve...
متن کاملstudy of climate change on hydrological drought
daily discharge data of 12 hydrometric recording stations in atrak river basin were manipulated to calculate low flows for 7-day duration for studying hydrological drought using regional analysis method. using regression models, the low flows for 7-days duration of 10-year return period were calculated and regional low flows were estimated for 20 stations. daily data in each station used to sim...
متن کاملAssessing water resource system vulnerability to unprecedented hydrological drought using copulas to characterize drought duration and deficit
Global climate models suggest an increase in evapotranspiration, changing storm tracks, and moisture delivery in many parts of the world, which are likely to cause more prolonged and severe drought, yet the weakness of climate models in modeling persistence of hydroclimatic variables and the uncertainties associated with regional climate projections mean that impact assessments based on climate...
متن کاملEvaluation of geostatistical methods in hydrological drought severity zoning in the Malayer plain
Due to the undeniable impact of drought on human life, careful study of this phenomenon seems essential. The purpose of this study is to evaluate the accuracy of Geostatistical methods in preparing the drought severity map in the Malayer plain using the Standardized Water-Level Index (SWI) and analyze the trend of the Piezometric well. The results based on RMSE and MAE criteria showed that amon...
متن کاملHydrological drought analysis using SDI index in Halilrud basin of Iran
Hydrological drought analysis using SDI index in Halilrud basin of Iran Abstract Nowadays, drought is considered as damaging environmental phenomenon which affects natural resources and social communities. Therefore it will be an important issues that magnitude and effects of these phenomena to be considered. To do this we used L-moment method for regional homogeneity testing. The Streamflow Dr...
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ژورنال
عنوان ژورنال: WIREs Water
سال: 2015
ISSN: 2049-1948,2049-1948
DOI: 10.1002/wat2.1085