19 آذر 1401
محمد رضايي

محمد رضایی

مرتبه علمی: استادیار
نشانی: استان همدان- دانشگاه ملایر- دانشکده فنی و مهندسی- طبقه دوم- اتاق 12
تحصیلات: دکترای تخصصی / مهندسی معدن
تلفن:
دانشکده: دانشکده فنی مهندسی

مشخصات پژوهش

عنوان
A sigmoid stabilizing function for fast sparse 3D inversion of magnetic data
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
3D, Inversion, Magnetic
سال
2020
مجله Near Surface Geophysics
پژوهشگران محمد رضایی

چکیده

An interesting geological objective of quantitative interpretation of magnetic data is to find inverse models which can determine sharp geological interfaces below the surface. The stabilizing function in the Tikhonov parametric functional governs sparseness constraint in the recovered model. This paper introduces a novel stabilizer based on a sigmoid function which can provide non‐smooth models in the inversion of magnetic data efficiently. An inversion algorithm is developed based on the reweighted regularized conjugate gradient to get the solution of the inverse problem using this stabilizing function. The performance of the proposed algorithm is checked on two synthetic data sets and real aeromagnetic data from McFaulds Lake in Ontario, Canada, in comparison with the results of the minimum support stabilizing function. The inverse problem converges to the solution faster when the sigmoid stabilizing function is used instead of the minimum support stabilizing function.