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Paper Information

Journal:   JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)   FALL 2015 , Volume 68 , Number 3; Page(s) 659 To 674.
 
Paper: 

TREND ANALYSIS OF STREAMFLOW IN KARKHEH RIVERS UPSTREAM: AN EVIDENCE FOR CLIMATE CHANGE IMPACTS ON WATER RESOURCES SYSTEMS

 
 
Author(s):  OSATI KHALED, SALAJEGHEH ALI*, MAHDAVI MOHAMMAD, KOENIGER PAUL, CHAPI KAMRAN, MALEKIAN ARASH
 
* FACULTY OF NATURAL RESOURCES, UNIVERSITY OF TEHRAN, I.R. IRAN
 
Abstract: 

Within the climate change debate and its probable impacts on water resources systems, design and operation of management plans based on the assumption of stationary hydrology may cause serious challenge to accurately predict future supplies. Therefore this case study is trying to assess trend in hydroclimatic variables of Karkheh Rivers upstream by applying modified Mann-Kendall trend test on long term daily time series of temperature, precipitation and discharge. Temperature variables are mostly showing meaningful increasing trends but observed changes in assessed stations were not spatially uniform for precipitation. Streamflow variables depict a decreasing trend, though more noticeable in base flows. Decreasing trend is meaningful for annual discharge median in Holailan at 90% confidence level. Total yearly precipitation, number of precipitation days and number of days with precipitation equal to, or greater than, 10 mm/d show the most correlation with stream flow variables. Comparing monthly discharge with temperature and precipitation variables in the studied gages indicates a time-delay in system response to inputs. This may related to snowmelt contributions or contributions of water into streams after passing through different hydrological pathways such as groundwater. Some parts of streamflow changes, especially about base flows, is not completely verified by precipitation changes and can be attributed to changes in temperature or another factors such as groundwater overexploitation.

 
Keyword(s): AUTOCORRELATION, CLIMATE CHANGE, KARKHEH, MODIFIED MANN- KENDALL, TIME SERIES
 
 
References: 
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+ Click to Cite.
APA: Copy

OSATI, K., & SALAJEGHEH, A., & MAHDAVI, M., & KOENIGER, P., & CHAPI, K., & MALEKIAN, A. (2015). TREND ANALYSIS OF STREAMFLOW IN KARKHEH RIVERS UPSTREAM: AN EVIDENCE FOR CLIMATE CHANGE IMPACTS ON WATER RESOURCES SYSTEMS. JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), 68(3), 659-674. https://www.sid.ir/en/journal/ViewPaper.aspx?id=509188



Vancouver: Copy

OSATI KHALED, SALAJEGHEH ALI, MAHDAVI MOHAMMAD, KOENIGER PAUL, CHAPI KAMRAN, MALEKIAN ARASH. TREND ANALYSIS OF STREAMFLOW IN KARKHEH RIVERS UPSTREAM: AN EVIDENCE FOR CLIMATE CHANGE IMPACTS ON WATER RESOURCES SYSTEMS. JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES). 2015 [cited 2021May16];68(3):659-674. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=509188



IEEE: Copy

OSATI, K., SALAJEGHEH, A., MAHDAVI, M., KOENIGER, P., CHAPI, K., MALEKIAN, A., 2015. TREND ANALYSIS OF STREAMFLOW IN KARKHEH RIVERS UPSTREAM: AN EVIDENCE FOR CLIMATE CHANGE IMPACTS ON WATER RESOURCES SYSTEMS. JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), [online] 68(3), pp.659-674. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=509188.



 
 
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