REGIONAL FEATURES OF CLIMOMORPHOGENESIS RUSSIA'S FAR EAST
Kurums and scree in the mainland of the Far East are quite widespread, but are marked by torn areas throughout the tundra and forest natural zones, where local natural contrasts, primarily bioclimatic, affect the development of these geomorphological systems in different ways. Purpose of the researc...
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| Format: | Conference Object |
| Language: | English |
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Инфинити
2020
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| Online Access: | https://dx.doi.org/10.34660/inf.2020.6.56900 http://naukarus.ru/public_html/wp-content/uploads/2020/PMSD March 5 - Part 2.pdf=73 |
| Summary: | Kurums and scree in the mainland of the Far East are quite widespread, but are marked by torn areas throughout the tundra and forest natural zones, where local natural contrasts, primarily bioclimatic, affect the development of these geomorphological systems in different ways. Purpose of the research to reveal the spatio-temporal patterns of development of talus and kurum morpholithogenesis in the conditions of the monsoon and continental climate of the mainland of the Russian Far East. Materials data of long-term geomorphological and geoecological studies of the author in Chukotka and Wrangel Island (1957-1959, 1971- 1972), in the river basin. Kolyma and Priokhotye (1971-1972, 1974-1975), in the lowlands (1974-1979) and in the mountains (2007-2011) in the south of the Far East (in the Khabarovsk Krai and Primorye), as well as available literary and stock sources were used. When solving common thematic is- sues, the achievements of our earlier long-term studies in the mountains of the Western and Eastern Sayan and on the Central Siberian Plateau (1961-1970) were involved. Methods comparative geographic, geophysical, cartographic, infor- mational. Main results. The modern distribution of screes and kurums as zonal formations in the mainland of the Russian Far East is controlled primarily by climate 1. The originality of the latter is created by: 1) seasonal changes in oceanic and continental situations 2) local contrasts (annual, monthly, daily) of heat and moisture and others. The relief-forming effect of climate is manifested not only directly, but also indirectly (through vegetation). Un- der the conditions of this climate, the studied geomorphological processes are most intense here in the middle segment (between 54 and 640 N) of the vast transitional band from the inland areas to the mega-coasts of the Pacific seas. The thicknesses of the considered formations are everywhere limited by the depth of the active layer, the maximum values of which are noted near the southern boundary of the permafrost region. The level of organization of kurum-talus climomorphogenesis is an important diagnostic feature of the dynamic state of the continental Far Eastern landscapes, which can be used in paleogeographic reconstructions, as well as in the development of background and operational geographical forecasts nec- essary to select the best options for regional nature management. |
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