|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Formation of a “new reality” of the landscape-permafrost environment along the transport systems of the Arctic regionsтезисы доклада Электронная публикация Тезисы
- Авторы: Iurov F.D., Grebenets V.I., Sokratov S.A., Tolmanov V.A., Tretyakov I.N., Turchaninova A.S., Shnyparkov A.L.
- Сборник: American Geophysical Union (AGU) 2020 Fall Meeting
- Том: 2020
- Тезисы
- Год издания: 2020
- Издательство: AGU Publications
- Местоположение издательства: Вашингтон
- Номер статьи: GC070-0011
- Аннотация: Among the anthropogenic objects in the Arctic regions, the most vulnerable are objects of transport infrastructure (roads, railways, pipelines). This is due to the peculiarities of the impact of these objects on the natural environment, including permafrost. A new temperature and snow accumulation regime is being formed. This leads to the development of a specific complex of cryogenic processes, primarily thermal erosion and thermokarst, associated with waterlogging and warming of soils along road embankments.The authors assessed the danger of the impact of 6 main groups of cryogenic processes (thermokarst, thermal erosion, frost heaving, frost cracking, ice formation, formation of kurums and stone glaciers) on the transport system of the permafrost zone of Russia and proposed a cartographic display of the degree of danger. It was revealed that the greatest threat to the transport system of Siberia and the Far East of Russia is the development of the process of thermal erosion.A zone with altered geocryological and landscape conditions is being formed along the linear transport objects. The temperature regime is transformed, the thickness of the active layer and the characteristics of moisture and snow accumulation change, and new plant associations and landscapes are formed. For 8 regions of the Russian Arctic was carried out numerical modeling of changes in the temperature of frozen soils and the thickness of the active layer near transport objects. On the basis of modeling we performed the calculation of the main strength characteristics of soil foundations taking into account changes in geocryological conditions.This work was supported by RFBR projects 18-05-60080 “Hazardous nival-glacial and cryogenic processes and their impact on infrastructure in the Arctic” and RGO-RFBR 15/2018 “Current state and dynamics of hazardous natural processes affecting the existing and future transport network Siberia and the Far East”<https://abstractsearch.agu.org/meetings/2020/FM/GC070-0011.html>
- Добавил в систему: Сократов Сергей Альфредович