Drainages has been reacting to changes in stream bed to different forms. Case study area has located in Alborz state and in upper of the Mehrshahr of karaj. Since basin has located on the bound shake faults and as big and high population cities is in this area, so study
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Drainages has been reacting to changes in stream bed to different forms. Case study area has located in Alborz state and in upper of the Mehrshahr of karaj. Since basin has located on the bound shake faults and as big and high population cities is in this area, so study of tectonic Activities position is essential in this area. In this paper has tried Neotectonic and its effects on the valleys and rivers direction to survey by using of Af, SL,S,BR,P,T,Smf and Hi parameters. Research method is being analytical – comparisonal. For analysis has used WMS and Arc GIS softwares. For more careful survey of Neotectonic activities in area, case study basin has dispensed to four sub basin, such as Rajayishahr, Kamalshahr, Elahiyeh and Chahardangeh. The research result shown that tectonic has been activing in different parts of basin, and since western sub basin of area (chahardangeh sub basin) has weakly activity of tectonic in five geomorphic parameters , so this part of basin has relative equilibrium and to run from stage of erosion puberty.
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