شناسایی مناطق امیدبخش در محدوده کاریجگان پهنه خوسف - بیرجند با داده‌های ماهواره‌ای سنجش از دور

نوع مقاله : یادداشت فنی

نویسندگان

1 دکتری، گروه مهندسی معدن، رئیس بخش تحقیق و توسعه گروه سرمایه‌گذاری فولادگستر کوثر، تبریز

2 دانشجوی دکتری، گروه زمین‌شناسی، مدیر دفتر فنی گروه صنعتی توانگران سهند تبریز، تبریز

3 دانشجوی دکتری، گروه زمین‌شناسی، مدیر دفتر فنی گروه سرمایه‌گذاری فولادگستر کوثر، تبریز

4 دکتری، گروه مهندسی معدن، مدیر بخش اکتشافات سرمایه‌گذاری فولادگستر کوثر، تبریز

5 دانشجوی دکتری، گروه مهندسی معدن، مشاور اکتشافات سرمایه‌گذاری فولادگستر کوثر، تبریز

چکیده

هدف از این مطالعه، به کارگیری داده‌های سنجش از دور استر برای شناسایی مناطق امیدبخش و طراحی پیمایش مقدماتی هدفمند در محدوده کاریجگان واقع در پهنه خوسف- بیرجند است، بنابراین برای این منظور، ابتدا پیش‌پردازش‌های لازم از قبیل، تصحیحات اتمسفری و توپوگرافی بر روی داده‌ها اعمال گردید، سپس از روش‌های پردازشی مرسوم بر روی داده‌های چندطیفی شامل نسبت‌گیری باندی، روش تحلیل مولفه‌های اصلی (PCA) و نوع بهبود یافته آن، تحت عنوان روش تحلیل مولفه‌های انتخابی (کروستا)، مناطق امیدبخش شناسایی شدند. در این حالت، با استفاده از روش نسبت‌گیری باندی مناطق مستعد اکسیدهای آهن، سیلیس، کربنات ،کلریت و اپیدوت، آلونیت، کائولینیت و پیروفیلیت، سریسیت، مسکویت، ایلیت و اسمکتیت و با کمک روش کروستا انواع دگرسانی‌های شاخص منطقه (پروپیلیتیک، آرژیلیک و فیلیک) مشخص گردید. در نهایت، با تلفیق نتایج یاد شده، مناطق امیدبخش جهت پیمایش‌های اولیه شناسایی شد. یک بازدید میدانی و نمونه‌برداری از مناطق شناسایی شده، برای اعتبارسنجی نتایج پردازش‌ها انجام گرفت و نتایج آنالیز نمونه‌ها به روش ICP-OES و پراش اشعه ایکس (XRD) تطابق و صحت مناسبی را با نتایج حاصل از پردازش محدوده کاریجگان با استفاده از داده‌های سنجش از دور نشان داد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Identification of Promising Areas with Remote Sensing Satellite Data in Karijgan, Khosf- Birjand

نویسندگان [English]

  • H. Jamshid Moghadam 1
  • E. Yozbashlo 2
  • R. Dodangeh 3
  • A. Amirpour 4
  • M. Mahmoudi 5
1 Ph.D, Dept. of Mining Engineering, Head of R&D in Investment Group of Foladgostar Kowsar, Tabriz, Iran
2 Ph.D Student, Dept. of Geology, Director of the Technical Office in Tavaran Sahand Industrial Group, Tabriz, Iran
3 Ph.D Student, Dept. of Geology, Director of the Technical Office in Investment Group of Foladgostar Kowsar, Tabriz, Iran
4 Ph.D, Dept. of Mining Engineering, Director of Explorations in Investment Group of Foladgostar Kowsar, Tabriz, Iran
5 Ph.D Student, Dept. of Mining Engineering, Consultant of Explorations in Investment Group of Foladgostar Kowsar, Tabriz, Iran
چکیده [English]

This study aims to use the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) remote sensing data to identify promising areas and design a targeted preliminary survey in the Karijgan area located in Khosuf-Birjand. Therefore, at first, necessary pre-processing, such as atmospheric and topographic corrections, was applied to the data. Then, from conventional processing methods on multispectral data, including band ratio, principal component analysis (PCA), and its improved type, the selective principal component analysis method (CROSTA), promising areas were identified. In this case, by using the band ratio method, index areas prone to iron oxides, silica, carbonate, chlorite and epidote, alunite, kaolinite and pyrophyllite, sericite, muscovite, illite, and smectite were identified. Also, with the Crosta method, various types of main alterations (propylitic, argillic, and phyllic) were determined. Finally, by combining the results, promising areas were identified for preliminary surveys. A check field and sampling of the identified areas were done to validate the processing results. The results of the sample analysis by ICP-OES and X-ray diffraction (XRD) showed good agreement and accuracy with the results obtained from the remote sensing processing of the Karijgan area.

کلیدواژه‌ها [English]

  • Karijgan
  • ASTER
  • Remote sensing
  • CROSTA
  • Alteration

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سابقه مقاله

  • تاریخ دریافت: 21 مرداد 1402
  • تاریخ بازنگری: 08 مهر 1403
  • تاریخ پذیرش: 17 اسفند 1402

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