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ارزیابی منطقه‌ای مخاطرۀ سیل در مقیاس زیرحوضه با استفاده از سنجش از دور و مدل منطق فازی (مطالعۀ موردی: حوضۀ آبخیز مرند) | ||
| اکوهیدرولوژی | ||
| مقاله 9، دوره 5، شماره 3، مهر 1397، صفحه 829-841 اصل مقاله (1.33 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2018.245661.775 | ||
| نویسندگان | ||
| سیدمحمد موسوی1؛ شهرام روستائی* 2؛ هاشم رستم‌زاده3 | ||
| 1کارشناسی ارشد سنجش از دور و GIS، دانشگاه تبریز | ||
| 2استاد گروه سنجش از دور و GIS، دانشکدۀ برنامه‌ریزی و علوم محیطی، دانشگاه تبریز | ||
| 3استادیار گروه آب و هواشناسی، دانشکدۀ برنامه‌ریزی و علوم محیطی، دانشگاه تبریز | ||
| چکیده | ||
| ازجمله مهم‌ترین مخاطرات تهدیدکنندۀ جوامع بشری سیل است. در پژوهش حاضر با یکپارچه‌سازی مدل منطقی برآورد رواناب اوج، به ارزیابی مخاطرۀ سیل حوضۀ آبخیز مرند در مقیاس زیرحوضه با استفاده از سنجش از دور و GIS پرداخته شده است. پس از تعیین ضریب رواناب با استفاده از لایههای پوشش/کاربری اراضی تهیه‌شده از تصاویر ماهوارۀ Sentinel 2A، نقشۀ شیب تهیه‌شده از DEM 30 متری سنجندۀ ASTER و گروههای هیدرولوژیک خاک، با استفاده از میزان تعیین‌شده که با محاسبۀ زمان تمرکز زیرحوضهها تعیین شد، رواناب اوج برای همۀ زیرحوضهها محاسبه شد. در ادامه، با استفاده از تابع عضویت خطی در مدل منطق فازی، یکپارچه‌سازی دو لایۀ رواناب اوج تهیه شده و لایۀ ارتفاع، بین صفر و یک فازیسازی شدند و سپس با اعمال همپوشانی ضربی وزنهای مشخص براساس شاخص مخاطرۀ سیل (FHI)، به هریک از این دو لایه و سپس جمع نتایج آنها، نقشۀ توزیع مخاطرۀ سیل تهیه شد. با کلاسبندی نقشۀ مخاطرۀ تهیه‌شده در پنج کلاس شامل بسیار کم‌خطر، کم‌خطر، متوسط، پرخطر و بسیار پرخطر با نتایج به‌دست‌آمده از سیستم اطلاعات جغرافیایی مشارکتی یا PGIS و ورود این اطلاعات به ماتریس درهم‌ریختگی میزان دقت نقشههای تهیه‌شده 83/87 درصد تعیین شد. | ||
| کلیدواژه‌ها | ||
| حوضۀ آبخیز مرند؛ مخاطرۀ سیل؛ منطق فازی؛ PGIS؛ Sentinel 2A | ||
| عنوان مقاله [English] | ||
| Regional Flood Hazard assessment at the Sub-basin Scale Using Remote Sensing & Fuzzy logic | ||
| نویسندگان [English] | ||
| SeidMohamad Mousavi1؛ Shahram Roostaei2؛ Hashem Rostamzadeh3 | ||
| 1University of Tabriz | ||
| 2Head of the Faculty of Planning and Environmental Sciences, Tabriz University, Tabriz, Iran. | ||
| 3Department of Climatology, Faculty of Planning and Environmental Sciences, Tabriz University, Tabriz, Iran | ||
| چکیده [English] | ||
| Flood is among the most important environmental hazards, broadly threatening human societies and their assets. In this research, by integrating the Rational model to estimate peak runoff into Marand basin flood hazard on a sub-basin scale, assessments are accomplished using remote sensing and GIS. After determining the runoff coefficient land cover/use layers were taken from satellite images of the Sentinel 2A, and the slope map was derived from the ASTER DEM 30m and soil hydrological groups, using the specified amount of rainfall hamely intensity in mode of 1-hour peak runoff was calculated. Using linear membership function in fuzzy logic model, integrating prepared this peak runoff and elevation lines between zero and one were fuzzy and then by applying multiple weight tangles to each of these two layers we collected their results, and the flood hazards distribution map was prepared. With the implementation of prepared risk map in fifth grade the classes include very low-risk, low risk, medium, high and very high risk with the results of GIS partnership or PGIS and entering this information into the confusion matrix. The accuracy of prepared maps was determined to be about 87.83%. | ||
| کلیدواژه‌ها [English] | ||
| Flood hazard, Sentinel 2A, Fuzzy logic, Marand basin, PGIS | ||
| مراجع | ||
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