برای نقشه- ASTER و سنجنده ETM+ مقایسه دادههای سنجنده برداری مناطق دگرسان شده در بخش مرکزی کمربند دهج- ساردوییه استان کرمان

نویسندگان

1 دانشگاه شهید باهنر کرمان

2 سازمان صنایع و معادن استان کرمان

چکیده

منطقه مورد مطالعه در کمربند آتشفشانی  تهنشستی دهج  ساردویه در استان کرمان
قرار گرفته که بخش جنوب شرقی کمربند آتشفشانی  تهنشستی ایران مرکزی است. در این
استفاده شده است. روش های ASTER و سنجنده ETM+ تحقیق از دادههای سنجنده
مختلف پردازش تصویر )ترکیب کاذب رنگی، نسبت گیری نواری و آنالیز مؤلفههای اصلی( به
منظور شناسایی زونهای دگرسان وابسته به کانسارهای مس مورد استفاده قرار گرفته است.
برای تعیین قابلیتهای هر ASTER و ETM+ هدف از این کار مقایسه دادههای سنجندههای
یک در شناسایی مناطق دارای اکسید آهن و دگرسانی است. این بررسی نشان داد که دادههای
به خاطر دارا بودن گستره طیف آبی از قابلیت بهتری در تعیین مناطق دارای ETM+ سنجنده
برخوردارند. دادههای سنجنده ASTER کانیهای اکسید آهن نسبت به دادههای سنجنده
به خاطر دارا بودن نوارهای طیفی متعدد در گستره فروسرخ موج کوتاه، قابلیت ASTER
زیادی در شناسایی مناطق رسی داراست.

کلیدواژه‌ها


عنوان مقاله [English]

Comparison of ETM+ and ASTER data for hydrothermal alteration mapping in the central part of the Dehaj-Sarduyeh belt, Kerman Province

چکیده [English]

The study area is located in the Dehaj-Sarduyeh belt in Kerman
province. This belt forms the south eastern part of the Central Iranian
Volcanic Belt. Enhanced Thematic Mapper plus (ETM+) and Advanced
Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data
have been used for this study. Different image processing techniques such as
false color composite, band ratioing and principal component analysis are
used for recognizing the alteration zones related to the copper mineralisation.
The aim of this investigation is to compare ETM+ and ASTER data and
finding out their capabilities to recognize the altered and iron oxide bearing
areas. This investigation showed that ETM+ data due to its blue region
spectral band can enhance the iron oxide rich areas much better than ASTER
data. ASTER data due to its various spectral bands in the short wave infrared
is more capable of enhancing clay bearing areas.

کلیدواژه‌ها [English]

  • ETM+
  • Aster
  • band ratio
  • principal components
  • copper mineralization
  • Kerman
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