Along-strike topographic variations of the Altyn Tagh fault in the northern Tibetan Plateau

Recent studies have revealed different fault geometries and slip distributions along the Altyn Tagh fault (ATF) strike in the northern Tibetan Plateau. We explore the possible linkage between the topographic features and Quaternary activities of the ATF by presenting results of topographic indices, including the altimetry, hillslope gradient, local relief, and river channel steepness. We found similar along-strike topographic variations of the ATF and Quaternary deformation. From a spatial distribution perspective, the topographical indices along the ATF are characterized by wave-like changes from the west to the east, with dividing points near the Xorkol Basin and Annanba Mountain. The along-strike variation of the topography is closely correlated with the Quaternary slip rates. Further comparison of the annual average precipitation and bedrock lithology indicates less effect on this observed topographic variation. We conclude that the Quaternary oblique-slip along the ATF led to the development of differential landscapes.