در بررسي قلمروهاي ديرينه پلاياي گاوخوني G.I.S لندست و تكنيك ETM كاربرد تصاوير

Using of Landsat 7 Satellite Images and G.LS Technic in Study of Gavkhuni Playa Paleo Domains

Gavkhuni playa has illustrated on its bed the occurrence of climatic-environmental happenings as an evidence and record of the Quaternary in Iran and enjoys a special position in Irans geomorphological domains .ln the other hands, the domain of the Quaternary, diversity and stability of the archeological morphic forms portray the predominance of climatic cold and warm different phases and the reserve variations of matter and energy at different geomorphic levels. Study of Gavkhuni paleogeomorphology will help us identify and reconstruct the predominance of the past conditions and, at the same time gain a correct and true understanding of such domains and compare. Our behavior with the geomorphic nature of the region in the course of proper management and planning ,In, this paper, employing Landsat satellite images and performing pre-processing operations, mosaic and analysis of the images of the region of under - study, we reconstructed the domain of Gavkhuni in different phases of progression and regression. Then we proceeded to identify separative and compare ,the domains with the paleogeomorphic forms In another word, employing processing various methods and the region altitude digital model to combine with the paleo domains and levels of the great Gavkhuni,we would be able to identify and separate the playa consecutive levels in different phases and compare paleo forms including mega deltas and terraces of lakes remained from the previous levels with the reconstructed domains. At the end ,we both prepared paleo thematic maps identified and reconstructed the great Gavkhuni domain upto four various phases. This method has been used for the first time in the domain of Gavkhuni playa and is recommended as a reliable method for studying other playa of Iran.