COMPARISON OF SOME RAINFALL TEMPORAL PATTERN DETERMINATION FOR URBAN FLOOD ESTIMATION (CASE STUDY: BABOLSAR)

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KARIMI V.; SOLAIMANI K.; HABIBNEJAD ROSHAN M.; SHAHEDI K.

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Journal: Journal of Irrigation and Water Engineering Year:2013 | Volume:4 | Issue:13 Page(s): 102-112

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Title

COMPARISON OF SOME RAINFALL TEMPORAL PATTERN DETERMINATION FOR URBAN FLOOD ESTIMATION (CASE STUDY: BABOLSAR)

Author(s)

KARIMI V. | SOLAIMANI K. | HABIBNEJAD ROSHAN M. | SHAHEDI K. | Issue Writer Certificate

Keywords

DESIGN STORMQ2

SYNTHETIC BLOCK METHODQ2

CHICAGO METHODQ2

YEN & CHOW METHODQ2

STORM PEAK TIMEQ2

STORM ADVANCEMENT COEFFICIENTQ2

Abstract

Rainfall intensity changes during storm time advancement has more influence on shape of hydrograph and the time of peak storm flood discharge. One of the most important inputs in storm flood simulation models is rainfall pattern that applied in rainfall- runoff simulation section and affect the hydraulic characteristics of streams in water conduits, both open and closed. There are several methods for determination of rainfall temporal patterns. In this study Yen & chow, Chicago and SYNTHETIC BLOCK METHODs are used. Because of high imperviousness and small area of Babolsar Urban catchment, 2 hour DESIGN STORM with 10 year return periods was accepted. 329 continuous storm among the 1966 to 1998 was selected. Storms was separated in 5 categories, less than 6 hr, 6-12 hr, 12-18 hr, 18-24 hr and longer than 24 hr. IDF curves are calculated and drawn tp/td. value was calculated by Yen & Chow method, and used instead of advancement coefficient (r) in CHICAGO METHOD. Centre of storm duration in Synthetic Block, determined by tp/td value. Results of this research emphasis that by Yen & Chow method can be used as a trustable method for determination of rainfall advancement coefficient in one station or an area.

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APA: Copy

KARIMI, V., SOLAIMANI, K., HABIBNEJAD ROSHAN, M., & SHAHEDI, K.. (2013). COMPARISON OF SOME RAINFALL TEMPORAL PATTERN DETERMINATION FOR URBAN FLOOD ESTIMATION (CASE STUDY: BABOLSAR). IRANIAN OF IRRIGATION & WATER ENGINEERING, 4(13), 102-112. SID. https://sid.ir/paper/247264/en

Vancouver: Copy

KARIMI V., SOLAIMANI K., HABIBNEJAD ROSHAN M., SHAHEDI K.. COMPARISON OF SOME RAINFALL TEMPORAL PATTERN DETERMINATION FOR URBAN FLOOD ESTIMATION (CASE STUDY: BABOLSAR). IRANIAN OF IRRIGATION & WATER ENGINEERING[Internet]. 2013;4(13):102-112. Available from: https://sid.ir/paper/247264/en

IEEE: Copy

V. KARIMI, K. SOLAIMANI, M. HABIBNEJAD ROSHAN, and K. SHAHEDI, “COMPARISON OF SOME RAINFALL TEMPORAL PATTERN DETERMINATION FOR URBAN FLOOD ESTIMATION (CASE STUDY: BABOLSAR),” IRANIAN OF IRRIGATION & WATER ENGINEERING, vol. 4, no. 13, pp. 102–112, 2013, [Online]. Available: https://sid.ir/paper/247264/en

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