THE NATURE OF THE CHANGE IN THE TYPE OF RELIEF FORMATION IN THE SUBZONE OF THE NORTHERN TAIGA OF THE FAR EAST

• Main Author: Skrylnik, G.P.
• Format: Conference Object
• Language: English
• Published: Инфинити 2019
• Subjects: The Far East; the Okhotsk mega-coast; the Upper Nerskoye plateau; modernity; methods; age; nivation; permafrost creep; kurum formation; geoecological risks; Arctic; Okhotsk; Pacific; Kolyma; Kurum; permafrost; taiga
• Online Access: https://dx.doi.org/10.34660/inf.2019.1.40976; http://naukarus.ru/public_html/wp-content/uploads/GB/Conference November 14 - Part 3.pdf#page=141

The goal and objectives are to elucidate the nature of the change in the prevailing type of relief formation in the subzone of the northern taiga of the Far East. Such a study was performed for the first time and therefore is new. Materials data of route studies (1974 2012), performed by the author along the Kolyma highway (respectively, from the coastal strip of the Sea of Okhotsk to the Upper Nersky plateau, inclusive), using literature and the results of aerovisual observations in most areas of the northern subzone taiga of the Far East. Methods comparative geographical and informational. Main conclusions. The main tendencies of exogenous relief formation within the megacoast of the Sea of Okhotsk for the near future are determined by the retreat of marine abrasion and accumulation before erosion and alluvial accumulation, and in the mountains by an even greater displacement of nation processes as a whole by a sharp increase in the specific gravity of cryogenesis (in particular, kurum formation) in general morphogenesis. Throughout the entire geomorphological stage (from the Mesozoic to the present), the chionosphere invariably acted on the topography of the Kolyma region from the Arctic and Pacific Oceans. Now there is mainly a weak influence of the Pacific Ocean (in particular, the Sea of Okhotsk), as a result of which parallelvalley snowfields form only in the extreme southeast. Thus, in the wide areas of the Upper Prikolymie, the late Holocene and modern exogenous formations were superimposed on the ancient Pleistocene relief of various genesis. A more ancient relief, related by age to the Paleogene, in the studied area is of limited distribution. In connection with the increase in continentality observed throughout the territory under consideration, cryogenic features begin to dominate in the relief. In the future, this trend will further intensify, which will lead to an increasing frequency of geoecological ris ks.