نتایج جستجو برای: flow hydrograph

تعداد نتایج: 482556  

ژورنال: علوم آب و خاک 2012
عطاا... شیرزادی, , پرویز فتحی, , کامران چپی, ,

Estimation of flood hydrograph is of necessities in hydrological studies such as flood mitigation projects. This estimation in un-gauged watersheds is usually taken place using geomorphological characteristics of watersheds. The objective of this research is to estimate synthetic unit hydrograph using regional flood frequency analysis and geomorphological parameters of watersheds. 1-hour and 2-...

ژورنال: علوم آب و خاک 2011
سمیه کاظمی کیا, , محمد بشیر گنبد, , محمدرضا قنبرپور, , مریم ذوالفقاری, , مهدی تیموری, ,

Baseflow separation has long been an important topic in hydrology and has a crucial role in water resources management in arid and semi arid regions like Iran. In this paper, a comparison among commonly used automated techniques for hydrograph separation including theoretical method of local minimum and digital filter of one parameter with different filtering parameters of 0.9 to 0.975 and two ...

Journal: :Water Resources Research 2006

Journal: :Hydrology 2022

Droughts are natural disasters with a significant impact on the economy and social life. Prolonged droughts can cause even more damage than floods. The novelty of this work lies in definition synthetic drought hydrograph (SDH) which be derived at each gaging station river network. Based hydrographs (DHs) recorded for selected station, SDH is statistically characterized provides valuable informa...

2009
Takahiro Sayama Jeffrey J. McDonnell

[1] Hydrograph source components and stream water residence time are fundamental behavioral descriptors of watersheds but, as yet, are poorly represented in most rainfall-runoff models. We present a new time-space accounting scheme (T-SAS) to simulate the pre-event and event water fractions, mean residence time, and spatial source of streamflow at the watershed scale. We use a physically based ...

Journal: : 2022

The paper discusses the application of a chain mathematical models for calculating glacial debris flow. Modeling was carried out Bodomdara River valley case an outburst Lower Lake (Gorno-Badakhshan Autonomous Region, Tajikistan). FLOVI program, written in Python programming language, applied; it combines equations lake hydrograph and characteristics flow during its formation. To calculate flood...

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