برآورد تغذیه‌ طبیعی آب زیرزمینی با استفاده از روش WTF (مطالعه موردی: آبخوان دشت اردبیل)

نوع مقاله : مقاله کامل پژوهشی

نویسندگان

1 گروه مرتع و آبخیزداری، دانشکده‌ فناوری کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل

2 استادیار گروه مهندسی آب دانشگاه محقق اردبیلی

3 گروه مهندسی آب، دانشکده‌ فناوری کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل

10.22034/ceej.2018.7576

چکیده

     کمّی‌سازی مقدار تغذیه آب زیرزمینی پیش­نیاز اساسی برای مدیریت کارآمد منابع آب زیرزمینی می­باشد. میزان تغذیه آبخوان یکی از مؤلفه­های مشکل برای اندازه­گیری، در زمان ارزیابی منابع آب زیرزمینی می­باشد. شیوه­های متعددی برای کمّی­سازی مقدار تغذیه مورد استفاده قرار می­گیرد. یکی از این شیوه­ها، نوسانات سطح آب زیرزمینی (WTF) می­باشد. سادگی، ارزانی و سهولت استفاده باعث شده این روش در مناطق نیمه خشک مورد توجه قرار گیرد. در این پژوهش، تغذیه طبیعی آبخوان دشت اردبیل با استفاده از روش WTF مورد مطالعه قرار گرفت. نتایج نشان داد که برای دوره آماری 10 ساله (از مهر 1380 تا مهر 1390) میزان متوسط آب­دهی ویژه برای آبخوان 084/0 و متوسط کسری از آب بارندگی و آبیاری که موجب تغذیه‌ آبخوان می‌گردد به ترتیب برابر 84/16 و 53/22 درصد می‌باشد. در نهایت با به دست آمدن مقادیر پارامترهای مؤثر در تغذیه، متوسط سالانه‌ تغذیه‌ی آب زیرزمینی، معادل 191 میلیون مترمکعب محاسبه گردید.

کلیدواژه‌ها

عنوان مقاله [English]

Estimation of Natural Groundwater Recharge using WTF Method (Case Study: Ardabil Plain Aquifer)

نویسندگان [English]

  • Hossein Ghafari 1
  • Ali Rasoulzadeh 2
  • Majid Raoof 3
  • Abazar Esmeali 1
1 Agriculture and Natural Resources, University of Mohaghegh Ardabili
2 Agriculture and Natural Resources, University of Mohaghegh Ardabili
3 Agriculture and Natural Resources, University of Mohaghegh Ardabili
چکیده [English]

Quantification of the rate of ground water recharge is a basic prerequisite for efficient ground water resource management. The rate of aquifer recharge is one of the most difficult components to measure when evaluating ground water resources. Numerous techniques are used to quantify recharge rate. One of these techniques is water table fluctuation method (WTF). This method is considered to be one of the most romising and attractive due to its ease of use and low cost of application in semiarid areas. Scanlon et al., (2002) review appropriate techniques for quantifying groundwater recharge, of which the water table fluctuation (WTF) method is the most likely candidate based on the available data for the study area. This method is reviewed by Healy and Cook with some recent examples including Moon et al., (2004); Crosbie et al., (2005); Scanlon et al., (2002); Healy and Cook (2002); Moon et al., (2004). Sharda et al., (2006) used the WTF and Chloride mass balance (CMB) methods for assessing groundwater recharge in India. They showed that WTF and CMB methods indicated comparable results for estimation of actual groundwater recharge (Crosbie et al., 2005). In this research, natural recharge of groundwater is studied using the WTF method.
 

کلیدواژه‌ها [English]

  • WTF method
  • Specific yield
  • Fraction of irrigation
  • Fraction of rainfall
  • Ardabil plain aquifer

مراجع

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نشریه مهندسی عمران و محیط زیست دانشگاه تبریز
دوره 48.1، شماره 90 - شماره پیاپی 90
بهار 1397
خرداد 1397
صفحه 43-52

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