تخمین رواناب روزانه به کمک مدل نیمه مفهومی IHACRES در حوضۀ آبریز ناورود گیلان

نوع مقاله: پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد عمران- منابع آب، گروه عمران، دانشکدۀ مهندسی، دانشگاه شهید چمران اهواز

2 دانشیار گروه عمران، دانشکدۀ مهندسی، دانشگاه شهید چمران اهواز

چکیده

تصمیم‌گیری در مورد مدیریت منابع آب و ساخت و بهره‏برداری از سازه‏های هیدرولیکی، مستلزم داشتن اطلاعات مطمئن دربارۀ میزان دبی جریان در حوضۀ آبریز است تا با توجه به دبی سیلاب طراحی بتوان تصمیم‏گیری کرد. بنابراین، بهره‏گیری از مدل‏های شبیه‏سازی فرایند بارش‌ـ روانابی که علاوه بر دقت خوب، به اطلاعات ورودی کمی نیز نیاز دارند، بااهمیت است. مدل IHACRES از مدل‏های نیمه‌مفهومی بارش‌ـ رواناب است که قادر است با دریافت اطلاعات کم، ابتدا به تولید بارش مؤثر و سپس به شبیه‏سازی رواناب بپردازد. در پژوهش حاضر بارش‌ـ رواناب حوضۀ ناورود گیلان به کمک مدل IHACRES با استفاده از داده‏های دبی روزانۀ ایستگاه خرجگیل در خروجی حوضه و نیز داده‏های بارش و دمای روزانۀ ایستگاه خلیان در مرکز ثقل حوضه طی دورۀ 1391 تا 1394 به‏عنوان دورۀ کالیبراسیون و دورۀ 1387 تا 1389 نیز به‏عنوان دورۀ صحت‌سنجی‌ شبیه‏سازی شد. نتایج بر اساس ضریب کارایی مدل نش‌ـ ‏ساتکلیف (E)‏ و میانگین خطای کل (BIAS) و میانگین خطای نسبی پارامتریک (ARPE) ارائه شد که مقدار به‏دست‏آمدۀ E در دورۀ کالیبراسیون و صحت‌سنجی به‌ترتیب 55/0 و 46/0 به دست آمد که با توجه به نتایج پژوهش‏های پیشین قابل ‏قبول است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Estimation of daily runoff using of the semi- conceptual rainfall-runoff IHACRES model in the Navrood watershed (a watershed in the Gilan province

نویسندگان [English]

  • Morteza Lotfirad 1
  • Arash Adib 2
  • Ali Haghighi 2
1 Civil Engineering Department, Engineering Faculty, Shahid Chamran University, Ahvaz, Iran
2 Civil Engineering Department, Engineering Faculty, Shahid Chamran University of Ahvaz, Ahvaz, Iran
چکیده [English]

Due to lack of data, using of rainfall-runoff models with high accuracy that do not need to large amounts of data is an important issue. The IHACRES model is a semi- conceptual rainfall- runoff model. This model does not need to large amounts of data and calculates effective rainfall. Then this model simulates the value of runoff. The case study of this research is the Navrood watershed in the Gilan province. For simulation of rainfall and runoff in this research, IHACRES model utilizes daily flow discharge data in the Kharjgil hydrometric station and daily precipitation and temperature data in the Khalian synoptic station. The Kharjgil hydrometric station locates at outlet of watershed and the Khalian synoptic station locates at center of watershed. The model uses from data of time period 1391 to 1394 for calibration and time period 1387 to 1389 for cross validation. Nash- Sutcliffe model efficiency coefficient (E), mean of total error (BIAS) and average relative parameter error (ARPE) criteria are utilized evaluation of results of model. The value of E is 0.55 and 0.46 for calibration and cross validation respectively. These values show that results of this research are acceptable in comparison with previous researches.

کلیدواژه‌ها [English]

  • Rainfall
  • Runoff
  • The IHACRES model
  • The Navrood watershed
  • Nash- Sutcliffe model efficiency coefficient
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