الگوهای آماری و فرکتالی آرایه شکستگی‌ها در توده گرانیتی شرق بجستان بر پایه تکنیک‌های دورسنجی

نوع مقاله : علمی -پژوهشی

نویسندگان

دانشگاه فردوسی مشهد

چکیده

تجزیه و تحلیل شدت(I)، تجمع(ρ)، میانگین طول خطواره(µ) و تقاطع(n)، از پارامترهای کاربردی در محاسبات آماری گسلها و شکستگیها است که در واحد سطح بیان می شوند. در این تحقیق بارز سازی خطواره ها با به کار گیری تصویر اسپات5 انجام شد. شکستگیها در دو دسته سیستماتیک با روند های شمال غربی – جنوب شرقی که روند غالب منطقه هستند و شمال شرقی – جنوب غربی دسته بندی شدند. با توجه به وسعت منطقه و میزان توزیع شکستگیها، منطقه به 42 شبکه مربعی با طول ضلع 7/1 کیلومتر تقسیم و سپس الگوی فرکتالی شکستگی های ساختاری منطقه محاسبه شد که بیشترین مقدار آن در جنوب-شرق و غرب منطقه به دست آمد. در مرحله ی بعد پارامترهای فوق برای هر شبکه به طور جداگانه و دستی محاسبه و نقشه کانتور آنها ترسیم شد. بیشترین I و ρ در جنوب شرق، غرب و بیشترینµ و n  به ترتیب در شمال شرق و جنوب شرق منطقه حاصل شدند. AbstractAnalysis of intensity (I), density (ρ), mean lineament trace length (µ) and intersection (n), are the parameters used in the statistical calculations faults and fractures that are expressed per unit area. In this study, enhancement of lineaments has been done with the use of SPOT 5 image. Fractures were classified in two systematic trend northwest - southeast that are the dominant trend in the area and northeast – southwest. According to the area extention and the distribution of fractures, area is divided into 42 square network with a side length of 1.7 kilometers. Then the fractal model of structural fractures area was calculated, the highest disribution rate in southeast and west region was obtained. The above parameters for each network was calculated separately and manual and their contour maps were drawn. The highest I and ρ in southeast, west and the highest µ and n in the northeast and southeast region were obtained respectively. Keywords: Spot 5 image, Remote sensing, Fractal, Bajestan granite. 

کلیدواژه‌ها


عنوان مقاله [English]

The study of statistical models and fractal array fractures in the eastern Bajestan granite mass based on remote sensing techniques

چکیده [English]

Analysis of intensity (I), Density (ρ), Mean lineament trace length (µ) and intersection (n), are the parameters used in the statistical calculations faults and fractures that are expressed per unit area. In this study, enhancement of lineaments has been done with the use of SPOT 5 image. Fractures were classified in two systematic trend northwest - southeast that are the dominant area trend and northeast – southwest. According to the area and the distribution of fractures, Area is divided to 42 square network with a side length of 1.7 kilometers. Then the fractal model of structural fractures area was calculated, the highest in southeast and west region was obtained. The above parameters for each network was calculated separately and manual and their contour maps were drawn. The highest I and ρ in southeast, west and the highest µ and n in the northeast and southeast region were obtained respectively.

کلیدواژه‌ها [English]

  • Bajestan granite- Remote sensing- Fractal- Spot 5
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