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شبیه سازی بارش-روانآب با نرم افزار eWater Source در آبخیز چهل چای، استان گلستان | ||
| پژوهش های آبخیزداری | ||
| مقاله 3، دوره 34، شماره 1 - شماره پیاپی 130، فروردین 1400، صفحه 16-29 اصل مقاله (2.19 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/wmej.2020.342744.1334 | ||
| نویسندگان | ||
| مهدی تیموری* 1؛ احسان الوندی2 | ||
| 1استادیار مجتمع آموزش عالی شیروان | ||
| 2دانشآموختهی دکترای علوم و مهندسی آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| چکیده | ||
| بهدلیل ناهمگنی آبخیزها و ناخطی بودن رفتارهای آبشناسی و فرسایشی، شناخت کامل رابطههای آنها بسیار پیچیده و مشکل است. بنابراین در ارزیابی و بررسی کردن این سامانهها، نیاز به فرآیند شبیهسازی است. در این پژوهش برای شبیهسازی کردن روانآب آبخیز چهلچای (256 کیلومترمربع) در استان گلستان، دو نرمافزار بارش روانآب GR4J و IHACRES در eWater Source با هم مقایسه شد. برای شبیهسازی بارش-روانآب آبخیز چهلچای موقعیت آبخیز با نرمافزار رقومی ارتفاع (DEM)، موقعیت زیرحوزهها، ایستگاهها، و خروجی آبخیز، واحدهای عملیاتی (بر اساس نقشهی کاربری زمین) و شبکهی آبراه آبخیز در محیط Source شبیهسازی کرده شد. نرمافزارهای GR4J و IHACRES در محیط Source بهکار گرفته شد. دادههای مجموعهی زمانی پیوسته در گام زمانی روزانه در نظر گرفته شد. برای اجرای نرمافزارها مجموعهی زمانی بارش روزانهی سالهای 1380 تا 1389 و تبخیر و تعرق سالهای 1380 تا 1389 از ایستگاه لزوره بهکار گرفته شد. این نرمافزارها در محیط eWater Source اجرا کرده شد. دادههای مشاهدهیی آبدهی جریان (1380 تا 1389)، ایستگاه آبسنجی لزوره برای واسنجی نرمافزارها بهکار گرفته شد. نتیجهی ارزیابی نرمافزارهای GR4J و IHACRES دقت شبیهسازی جریان را بر اساس معیار نش- ساتکلیف بهترتیب 0/79 و 0/73 در دورهی واسنجی (1380-1389) و 0/76 و 0/68 در دورهی اعتبارسنجی (1389-1394) نشان میدهد. بنابراین میتوان نتیجه گرفت که کارآیی این نرمافزارها در شبیهسازی جریان خوب است. نتیجهی ارزیابی نشاندهندهی کارآیی بهتر نرمافزار GR4J از IHACRES در شبیهسازی جریان روزانه است. بر پایهی توانمندیهای زیاد نرمافزار eWater Source، این محیط ابزار شبیهسازی مدیریتی مناسبی برای آبخیز دانسته میشود. | ||
| کلیدواژهها | ||
| بارش-روانآب؛ حوزه رودخانه گرگان رود؛ نرم افزار GR4J؛ IHACRES؛ eWater Source | ||
| عنوان مقاله [English] | ||
| Rainfall-Runoff Modeling Using the eWater Source in the Chel-Chay Watershed, the Province of Golestan | ||
| نویسندگان [English] | ||
| Mehdi Teimouri1؛ Ehsan Alvandi2 | ||
| 1Assistant professor Higher Education Complex of Shirvan, Khorsasn Shomali, Shirvan, Iran | ||
| 2Ph.D. Graduate in Watershed Management Sciences and Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Gorgan, Iran | ||
| چکیده [English] | ||
| It is very complex and difficult to fully understand the relationships in watersheds due to the heterogeneity and non-linear nature of hydrological and erosive behaviors. Therefore, the evaluation of watersheds requires a modeling process. After introducing the features of the eWater Source software as a management modeling environment for watersheds, two rainfall-runoff models of the GR4J and the IHACRES were compared to simulate the runoff of the Chel-Chay Watershed in the eWater Source environment. Chel-Chay Watershed, with an area of 256 square kilometers is located in Province of Golestan. In order to simulate the rainfall -runoff, the position of the watershed, sub-watersheds, stations, watershed outlet, operational units (based on land use map) and the watershed waterway network was simulated using the digital height model (DEM) in the Source environment. The GR4J and the IHACRES models were used. In this rainfall -runoff models, the continuous time series data were considered in the daily time steps. The time series of the daily precipitation of the years (2001 to 2010), and the daily evaporation and transpiration (during the same period) were used to implement the models. The models were implemented in the eWater Source environment. The discharge data for the period (2001-2010) were used to calibrate the models. The accuracy of the flow simulation based on the Nash-Sutcliffe criterion for the GR4J and the IHACRES models in the calibration period (2001-2010) were 0.79 and 0.73, and in the validation period (2011-2015) were 0.76 and 0.68, respectively. Therefore, it may be concluded that these models performed well in the simulation. The evaluation of results indicates that the GR4J model performs better than the IHACRES model for simulating the daily flow. Due to the high capabilities of the eWater Source software, this environment is recommended as a management model for the discharge of watersheds. | ||
| کلیدواژهها [English] | ||
| GR4J model, IHACRES model, rain-runoff, the eWater Source software, the Gorganroud River | ||
| مراجع | ||
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