تحلیل پتانسیل وقوع زمین‌لغزش با تأکید بر تأثیر زمین‌لرزه‌ها (مطالعه موردی: مسیر ارتباطی کرند تا سرپل‌ذهاب)

جغرافیا و مخاطرات محیطی

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 23 شهریور 1404   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.22067/geoeh.2025.94360.1591

نویسندگان

حمید گنجائیان^{* 1}؛ میلاد فیروزه²؛ علی میرآخورلی³؛ تکتم یزدانی⁴

¹دکتری ژئومورفولوژی، دانشگاه تهران، تهران، ایران

²کارشناسی ارشد مهندسی شهرسازی، گرایش برنامه ریزی شهری، دانشگاه علامه طباطبایی، تهران، ایران

³دانشجوی دکتری ژئومورفولوژی، دانشگاه تهران، تهران، ایران

⁴دکتری ژئومورفولوژی، دانشگاه تبریز، تبریز، ایران

چکیده

در این تحقیق از تصاویر راداری Sentinel 1، تصاویر ماهواره MODIS، لایه رقومی نقشه زمین‌شناسی 1:100000 منطقه و مدل رقومی ارتفاعی 5/12 متر ALOS PALSAR به‌عنوان مهم‌ترین داده‌های تحقیق استفاده شده است. مهم‌ترین ابزارهای تحقیق، GMTSAR‌، سامانه گوگل ارث انجین و ArcGIS بوده است. در این تحقیق با استفاده از روش‌های ضریب وزنی نسبی، منطق فازی و تداخل‌سنجی راداری، مناطق مستعد وقوع زمین‌لغزش با در نظر گرفتن تاثیرات زمین‌لرزه ازگله شناسایی شده است. بر اساس نتایج بدست آمده، محدوده مطالعاتی تحت تاثیر زمین‌لرزه ازگله بین 5- تا 334 میلی‌متر جابجایی عمودی داشته است. با توجه به اینکه جابجایی رخ داده می‌تواند نقش مهمی در ناپایداری دامنه‌ها و آماده حرکت کردن آن‌ها داشته باشد، در این پژوهش مناطقی که دارای پتانسیل بالایی از نظر وقوع زمین‌لغزش بوده‌اند و همچنین جابجایی بیش از 100 میلی‌متری داشته‌اند شناسایی شده و به‌عنوان مناطق دارای بالاترین احتمال وقوع زمین‌لغزش معرفی شده‌اند. بر اساس نتایج حاصله، دامنه‌های میانی منطقه و مناطق نزدیک شهر سرپل‌ذهاب به دلیل اینکه هم از نظر پارامترهای محیطی مستعد وقوع زمین‌لغزش هستند و هم اینکه دارای جابجایی عمودی بیش از 100 میلی‌متر بوده‌اند، به‌عنوان مناطق در معرض مخاطره زمین‌لغزش شناسایی شده است.

کلیدواژه‌ها

زمین‌لغزش؛ زمین‌لرزه؛ جابجایی عمودی؛ مسیر کرند-سرپل ذهاب

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