The Neotectonics of the Northern Sikhote-Alin and Adjacent Territories and its Reflection in the Self-Similarity Pattern of the Stream Network

—Morphostructural analysis of the topography and the analysis of the drainage network self-similarity of the Northern Sikhote-Alin and adjacent territories has been carried out. The topography of the studied territory has an inherited nature; it was formed in several phases during the neotectonic stage. The most intense vertical movements occurred at the beginning of the neotectonic stage. The intensity of vertical movements decreased significantly in the Pleistocene, when the modern erosion-denudation landforms were formed. At the final stages of neotectonic evolution (at the end of the Pleistocene–Holocene), there was a slight activation of vertical movements that caused structural changes and the emergence of structures with an NNE stretch, which was reflected in the features of the residual relief. The areas with elevated residual relief coincide with areas of increased seismicity in the region. The proposed modification of the complex self-similarity parameter PRNS shows better correlation with the latest (youngest) movements detected by the morphostructural method. Zones of maximum PRNS values coincide with the areas of greatest relief increment, and zones of minimum PRNS coincide with areas either with the smallest relief increment, or with most significant erosion. The self-similarity characteristics obtained for the river network are mainly comparable with the manifestations of vertical tectonic movements at the final neotectonic stages.