CRUSTAL DEFORMATION IN NW IRAN: INSIGHTS FROM DIFFERENT INVARIANT AND VARIANT COMPONENTS OF GEODETIC STRAIN RATE TENSORS

Abstract. Northwest of Iran, as a tectonically active region, has experienced numerous devastating earthquakes. That is why it so important to study the earth deformation in this area and provide more precise insights. So far, most researchers have had preference using invariant component strain rate tensor for investigating Earth's shape region. However, examine efficiency variant components geodesic interpreting deformations north-western we article maps geodetic (normal along north eastbound). Using velocity field gathered from previous article, also simple straightforward method, tensors were calculated. The obtained contraction direction (from normal axis) confirms Eurasia-Arabia collision. Besides, extension east derived expansion dilatation, show effect Anatolian motion west eastward movement central Iran plateau on tectonic structure studied area. These two results showed that provides us with useful information about region deformation.