APPLICATION OF TIME SERIES ANALYSIS IN DETERMINATION OF LAG TIME IN JAHANBIN BASIN

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MIRZAEI S.Y.; CHITSAZAN M.; CHINIPARDAZ R.

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Journal: WATER AND WASTEWATER Year:2004 | Volume:15 | Issue:3 (51) Page(s): 59-66

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Title

APPLICATION OF TIME SERIES ANALYSIS IN DETERMINATION OF LAG TIME IN JAHANBIN BASIN

Author(s)

MIRZAEI S.Y. | CHITSAZAN M. | CHINIPARDAZ R. | Issue Writer Certificate

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Abstract

One of the important issues that have significant role in study of hydrology of basin is determination of lag time. Lag time has significant role in hydrological studies. Quantity of rainfall related lag time depends on several factors, such as permeability, vegetation cover, catchments slope, rainfall intensity, storm duration and type of rain. Determination of lag time is important parameter in many projects such as dam design and also water resource studies. Lag time of basin could be calculated using various methods. One of these methods is time series analysis of spectral density. The analysis is based on fouries series. The time series is approximated with Sinuous and Cosines functions. In this method harmonically significant quantities with individual frequencies are presented. Spectral density under multiple time series could be used to obtain basin lag time for annual runoff and short-term rainfall fluctuation. A long lag time could be due to snowmelt as well as melting ice due to rainfalls in freezing days. In this research the lag time of Jahanbin basin has been determined using spectral density method. The catchments are subjected to both rainfall and snowfall. For short term rainfall fluctuation with a return period 2, 3, 4 months, the lag times were found 0.18, 0.5 and 0.083 month, respectively.

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APA: Copy

MIRZAEI, S.Y., CHITSAZAN, M., & CHINIPARDAZ, R.. (2004). APPLICATION OF TIME SERIES ANALYSIS IN DETERMINATION OF LAG TIME IN JAHANBIN BASIN. WATER AND WASTEWATER, 15(3 (51)), 59-66. SID. https://sid.ir/paper/384010/en

Vancouver: Copy

MIRZAEI S.Y., CHITSAZAN M., CHINIPARDAZ R.. APPLICATION OF TIME SERIES ANALYSIS IN DETERMINATION OF LAG TIME IN JAHANBIN BASIN. WATER AND WASTEWATER[Internet]. 2004;15(3 (51)):59-66. Available from: https://sid.ir/paper/384010/en

IEEE: Copy

S.Y. MIRZAEI, M. CHITSAZAN, and R. CHINIPARDAZ, “APPLICATION OF TIME SERIES ANALYSIS IN DETERMINATION OF LAG TIME IN JAHANBIN BASIN,” WATER AND WASTEWATER, vol. 15, no. 3 (51), pp. 59–66, 2004, [Online]. Available: https://sid.ir/paper/384010/en

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