Duality in Geomorphology

Some of phenomena have certain relationships which cannot be raised as correlation, but they considered as duality. Concept of duality is regarded when a phenomenon with another phenomenon is dual. Although each of these phenomena are independent in nature, there is a relationship between them. So, we will analyze the behavior of phenomena in relation to other phenomena.Earth subsidence has been one of the important issues jeopardizing environment and there are many studies, which blame shortage of underground water resources for having uplift and subsidence. However, many argue such conclusion and believe that earth subsidence has been studied in the past without considering the changes in the hill over a long period. In this study, we use SAR interferometry study to investigate earth subsidence in many plains of Iran and explain duality theory in the geomorphology. Concept of duality in geomorphology is mostlyrely on the land subsidence and the uplift in the adjacent hills.Mahyar plain is located 25 kilometers south of city of Isfahan, Iran. The region is covered with calcareous rocks of cretaceous and there are many rocky mountains. Many sediment erosions cover the areas of desert and there are various faults.Yazd- Ardakanregion is located in central part of Yazd and it contains many well-known faults. Ardabil plain is located in west northern part of Iran.