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ارزیابی آسیب پذیری آبخوان ساحلی قره‌سو-گرگان‌رود با استفاده از روش GALDIT و SINTACS و بهینه سازی آن با ابزار SPSA و GIS | ||
| اکوهیدرولوژی | ||
| مقاله 27، دوره 5، شماره 2، تیر 1397، صفحه 699-711 اصل مقاله (1.31 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2018.245717.777 | ||
| نویسندگان | ||
| مژگان بردبار1؛ امین رضا نشاط* 2؛ سامان جوادی3 | ||
| 1دانشجوی کارشناسی ارشد گروه سنجش از دور و سیستم اطلاعات جغرافیایی، دانشکدۀ منابع طبیعی و محیطزیست، دانشگاه آزاد اسلامی، واحد علوم تحقیقات تهران | ||
| 2استادیار گروه سنجش از دور و سیستم اطلاعات جغرافیایی، دانشکدۀ منابع طبیعی و محیطزیست، دانشگاه آزاد اسلامی، واحد علوم تحقیقات تهران | ||
| 3استادیار گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران | ||
| چکیده | ||
| آبهای زیرزمینی مهمترین منبع تأمین آب در بسیاری از نواحی ساحلی جهان هستند. با توجه به برداشت بیرویه از آبخوانها و هجوم آب شور، باید در آبخوانهای ساحلی مدیریت صحیح اعمال شود. در این مطالعه، آسیبپذیری آبخوان ساحلی قره‌سو-گرگان‌رود برای شناسایی نواحی آسیبپذیر با استفاده از روش SINTACS و GALDIT بررسی شده است. نقشههای آسیبپذیری این دو مدل در محیط نرم‌افزار GIS تولید، طبقهبندی و تلفیق شدند. بهمنظور دست‌یابی به مدل بهینه، ضریب همبستگی بین شاخصهای آسیبپذیری و غلظت TDS محاسبه شد. نتایج به‌دست‌آمده نشان داد مدل GALDIT ضریب همبستگی بیشتری نسبت به مدل SINTACS برای تهیۀ نقشۀ آسیبپذیری در منطقۀ مطالعه‌شده دارد. علاوه بر این، برای اصلاح مدل GALDIT از روش تحلیل حساسیت تکپارامتری استفاده شد. نتایج به‌دست‌آمده از این تحلیل نشان داد مؤثرترین پارامترها در ارزیابی آسیبپذیری آبخوان منطقۀ مد نظر، هدایت هیدرولیکی و ارتفاع سطح آب زیرزمینی بالاتر از سطح دریا هستند. | ||
| کلیدواژه‌ها | ||
| آبخوان ساحلی؛ آسیبپذیری؛ GIS؛ GALDIT؛ SINTACS | ||
| عنوان مقاله [English] | ||
| Vulnerability assessment of Gharesou-Gorganroud coastal aquifer using GALDIT and SINTACS and optimization by SPSA and GIS | ||
| نویسندگان [English] | ||
| Mozhgan Bordbar1؛ Aminreza Neshat2؛ Saman Javadi3 | ||
| 1Department of GIS/RS, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University,Tehran,Iran | ||
| 2Department of GIS/RS, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University,Tehran,Iran | ||
| 3Assistant Professor Department of Irrigation and Drainage Engineering,Abouryhan; Tehran | ||
| چکیده [English] | ||
| Groundwater is the most important source of water in coastal areas. Recently, due to overexploitation of the aquifer and seawater intrusion, a correct management in coastal aquifers must be applied. In this study, GALDIT and SINTACS models are used with geographic information system (GIS), in order to identify Gharesou-Gorganroud vulnerability areas. To generate, classify, weight and overlay vulnerability maps according to these two models, GIS environment is used. Geographic information system (GIS) is a useful tool to identify and assess vulnerability areas. The Pearson correlation coefficients is used to achieve an optimal model. To compare correlation results of GALDIT model and SINTACS model, GALDIT model has a higher correlation with TDS concentrations. In addition, Single parameter sensitivity analysis used to modify the GALDIT model to observe effect of each parameter on the GALDIT result model. In the study area, the result illustrated that the effective parameters in aquifer vulnerability assessment were hydraulic conductivity, depth of groundwater level, distance from the shore, type of aquifer, thickness of aquifer and impact status of existing saltwater intrusion, respectively. | ||
| کلیدواژه‌ها [English] | ||
| vulnerability, GIS, GALDIT, SINTACS, Coastal aquifer | ||
| مراجع | ||
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