نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار گروه محیطزیست، دانشگاه لرستان، دانشکده منابع طبیعی، خرم آباد، ایران
2 عضو هیأت علمی دانشگاه تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Precise geological information from Antarctica is not available due to extensive ice cover, difficult access, and poor lithology. Therefore, geological studies using remote sensing techniques and satellite images in this region are essential. Accordingly, the aim of this study is to assessment the application of multispectral satellite data from Landsat-8 and Advanced Spaceborne Thermal Radiation and Reflectance Radiometer (ASTER) for geological mapping in inaccessible areas of Antarctica. According to the results obtained, ASTER data show higher values of R (R=0.89) than Landsat-8 data, especially in relation to Al-OH-MI minerals, which is due to the high spectral values of SWIR in ASTER satellite. In general, ASTER satellite is more accurate in distinguishing between argillic (Alunite-Kaolinite), sericitic (Muscovite), and propylitic (Epidote-Chlorite-Calcite) alteration mineral assemblages. The results of this study showed that the remote sensing approach based on satellite images can be highly efficient for identifying geological structures and lithological units associated with large and inaccessible areas such as Antarctica, where field studies are limited. In addition, it is also possible to prepare accurate geological maps separated by the main lithological units in the target area.
کلیدواژهها [English]
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