[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Main Menu
Home::
Journal Information::
Articles archive::
For Authors::
For Reviewers::
Registration::
Contact us::
Site Facilities::
::
Search in website

Advanced Search
..
Receive site information
Enter your Email in the following box to receive the site news and information.
..
:: Volume 19, Issue 68 (4-2019) ::
جغرافیایی 2019, 19(68): 59-74 Back to browse issues page
Efficiency of Geomorphologic Instantaneous Unit Hydrograph (GIUH), Comparing to other Models in Mereg Catchment, Kermanshah.
Amjad Maleki1 , Maryam Hafezparast * 1
1- razi university
Abstract:   (2636 Views)

The Relationship between parameters of Geomorphology and hydrology, provides the possibility to watersheds that there are similarities in terms of geomorphology, by creating relationship between these Parameters, attempting to predict floods in watersheds that have data and its generalization to no data watersheds was similar to each other based on geomorphic parameters. In this context, several methods have been proposed. The aim of this study is to investigate the efficiency of geomorphologic instantaneous unit hydrograph (GIUH) in the preparation of flood hydrograph and compare its performance with Snyder, SCS and Triangular unit hydrograph models, in the Mereg catchment, Kermanshah.  In order to implement these methods, information relating to 12 rainfall –runoff events were collected and the direct hydrograph was obtained. According to statistical indices, Mean Relative Error (MRE), Root Mean Square Error (RMSE), coefficient of bias and Nash Sutcliffe, compare observed and predicted hydrograph showed that the most efficient model in estimating peak discharge is GIUH method and after it Snyder, SCS and triangle methods have the next, respectively. According to the results, Snyder, GIUH, SCS and Triangular methods are respectively estimated as highest performance at the time to peak. Moreover, the results indicate overestimation of GIUH, SCS and triangular methods in estimating peak flows and overestimated and underestimated of Snyder and GIUH methods in estimating of the time to peak. The SCS method also has the best flood volume estimation.

Keywords: Mereg catchment , Time to peak , Peak discharge ,GIUH
Full-Text [PDF 1047 kb]   (782 Downloads)    
Type of Study: Applicable | Subject: Special
Received: 2016/11/21 | Accepted: 2017/08/23 | Published: 2019/04/8
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

maleki A, hafezparast M. Efficiency of Geomorphologic Instantaneous Unit Hydrograph (GIUH), Comparing to other Models in Mereg Catchment, Kermanshah.. جغرافیایی 2019; 19 (68) :59-74
URL: http://geographical-space.iau-ahar.ac.ir/article-1-2689-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 19, Issue 68 (4-2019) Back to browse issues page
فضای جغرافیایی Geographic Space
Persian site map - English site map - Created in 0.19 seconds with 37 queries by YEKTAWEB 4642