DRAWING DEPTH – AREA – DURATION IN MARKAZI PROVINCE

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AGHARAZI H.; TELVARI A.; DAVOUDIRAD A.A.

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Journal: Year:2007 | Volume:20 | Issue:1 (74 IN NATURAL RESOURCES) Page(s): 94-100

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Information Journal Paper

Title

DRAWING DEPTH – AREA – DURATION IN MARKAZI PROVINCE

Author(s)

AGHARAZI H. | TELVARI A. | DAVOUDIRAD A.A. | Issue Writer Certificate

Keywords

DEPTH-AREA-DURATIONQ3

GISQ2

IRANQ3

MARKAZI PROVINCEQ3

PRECIPITATIONQ3

Abstract

Recognition of rainfall spatial variation over catchments is an important factor in designing water resources and watershed treatment projects. Drawing depth- area- duration (DAD) curves in any region can be useful to estimate spatial distribution of PRECIPITATION in drainage basin. The present study has been carried out for MARKAZI PROVINCE and its adjacent area. MARKAZI PROVINCE has an area of 2940000 hectare. There are 59 rain guages and one synoptic station over the province area with 30 years rainfall records (1966-1997). 60 numbers of 24 hours PRECIPITATION events have been selected for the study and the cumulative 24, 12, 6 and 3 hours rainfall graphs were draw. Gradient equation of each rainfall event was developed using the relation of elevation and PRECIPITATION. Topographic map of province were digitized using Ilwis 2.2 GIS program package. Gradiant equation for each event was entered to GIS in order to prepare isoohytal map. Some parameters including increment area, net rainfall, cumulative PRECIPITATION and the average of maximum PRECIPITATION for each PRECIPITATION have been identified. Then the first curves of DAD for any PRECIPITATION have been drawn and for each base time, the average value of PRECIPITATION for have been calculated and drawn. These curves show that in area of one square kilometer in each time of 24, 12, 6, and 3 hours the values of 40, 31, 28.5 and 28 mm PRECIPITATION were exist. The results showed that small areas, there is no significant differences between base time of 3, 6, and 12 hours. Whereas in large areas this event is being seen for example in area of 29 square kilometers and in base time of 3, 6, 12, and 24 hour, the values of 7.8, 12.2, 12.3, and 21 mm PRECIPITATION were exist. There are no significant differences between 6 and 12 hours curves of DAD.

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APA: Copy

AGHARAZI, H., TELVARI, A., & DAVOUDIRAD, A.A.. (2007). DRAWING DEPTH – AREA – DURATION IN MARKAZI PROVINCE. PAJOUHESH-VA-SAZANDEGI, 20(1 (74 IN NATURAL RESOURCES)), 94-100. SID. https://sid.ir/paper/383838/en

Vancouver: Copy

AGHARAZI H., TELVARI A., DAVOUDIRAD A.A.. DRAWING DEPTH – AREA – DURATION IN MARKAZI PROVINCE. PAJOUHESH-VA-SAZANDEGI[Internet]. 2007;20(1 (74 IN NATURAL RESOURCES)):94-100. Available from: https://sid.ir/paper/383838/en

IEEE: Copy

H. AGHARAZI, A. TELVARI, and A.A. DAVOUDIRAD, “DRAWING DEPTH – AREA – DURATION IN MARKAZI PROVINCE,” PAJOUHESH-VA-SAZANDEGI, vol. 20, no. 1 (74 IN NATURAL RESOURCES), pp. 94–100, 2007, [Online]. Available: https://sid.ir/paper/383838/en

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