Long-term variability of the spring taryn-aufeises
Long-term variability of large taryn-aufeises was studied for several decades in different regions of the USA (Alaska) and Russia (Chukotka, Kolyma, Southern Yakutia, Transbaikalia, and Eastern Sayan). Differences between volumes of individual ice massifs and the recorded maximal values change from...
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ftdoajarticles:oai:doaj.org/article:0d9d95354da549b6a7f66df03622785e 2023-05-15T15:11:42+02:00 Long-term variability of the spring taryn-aufeises V. R. Alekseev 2016-02-01T00:00:00Z https://doi.org/10.15356/2076-6734-2016-1-73-92 https://doaj.org/article/0d9d95354da549b6a7f66df03622785e RU rus Nauka https://ice-snow.igras.ru/jour/article/view/271 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2016-1-73-92 https://doaj.org/article/0d9d95354da549b6a7f66df03622785e Лëд и снег, Vol 56, Iss 1, Pp 73-92 (2016) вечная мерзлота криогенные процессы наледи-тарыны родники сезонное оледенение Science Q article 2016 ftdoajarticles https://doi.org/10.15356/2076-6734-2016-1-73-92 2023-03-19T01:40:13Z Long-term variability of large taryn-aufeises was studied for several decades in different regions of the USA (Alaska) and Russia (Chukotka, Kolyma, Southern Yakutia, Transbaikalia, and Eastern Sayan). Differences between volumes of individual ice massifs and the recorded maximal values change from 2–3 to 95–100%, and they do not depend on sizes of ice fields and their geographical locations. No statistically significant dependence of the aufeis volumes on the atmospheric precipitation amount and the air temperature was revealed in the most of the above areas. However, a general tendency for decreasing of the annual maxima of the ice reserves due to the climate warming was noticed. The long-term variations of the aufeises show existence of cycles of increase and decrease in their maximum sizes with their durations of 3, 7 and 11 years with the 25–30% amplitude of variations relative to the mean long-term values. In the Arctic areas, some of the giant aufeises do not melt completely during the summer and remain for a next winter. The volume of pereletoks (shortterm permafrost) varies within the range of 5–25%, averaging 16% of the spring ice reserves. In the southern geocryological zone, a clearly pronounced dependence of activity of the aufeis processes on the snow thickness was found: when the snow depth increased from 70 to 100 cm, volumes of aufeises decreased by a factor of three, and the aufeises disappeared completely under the thickness larger 120 cm. It should be noted that the processes producing the aufeis-forming sources of subsurface water, and the factors of their layered-ice accumulation remain almost unexplored. Article in Journal/Newspaper Arctic Chukotka Ice permafrost Yakutia Alaska вечная мерзлота Directory of Open Access Journals: DOAJ Articles Arctic Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Ice and Snow 56 1 73 92 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
вечная мерзлота криогенные процессы наледи-тарыны родники сезонное оледенение Science Q |
spellingShingle |
вечная мерзлота криогенные процессы наледи-тарыны родники сезонное оледенение Science Q V. R. Alekseev Long-term variability of the spring taryn-aufeises |
topic_facet |
вечная мерзлота криогенные процессы наледи-тарыны родники сезонное оледенение Science Q |
description |
Long-term variability of large taryn-aufeises was studied for several decades in different regions of the USA (Alaska) and Russia (Chukotka, Kolyma, Southern Yakutia, Transbaikalia, and Eastern Sayan). Differences between volumes of individual ice massifs and the recorded maximal values change from 2–3 to 95–100%, and they do not depend on sizes of ice fields and their geographical locations. No statistically significant dependence of the aufeis volumes on the atmospheric precipitation amount and the air temperature was revealed in the most of the above areas. However, a general tendency for decreasing of the annual maxima of the ice reserves due to the climate warming was noticed. The long-term variations of the aufeises show existence of cycles of increase and decrease in their maximum sizes with their durations of 3, 7 and 11 years with the 25–30% amplitude of variations relative to the mean long-term values. In the Arctic areas, some of the giant aufeises do not melt completely during the summer and remain for a next winter. The volume of pereletoks (shortterm permafrost) varies within the range of 5–25%, averaging 16% of the spring ice reserves. In the southern geocryological zone, a clearly pronounced dependence of activity of the aufeis processes on the snow thickness was found: when the snow depth increased from 70 to 100 cm, volumes of aufeises decreased by a factor of three, and the aufeises disappeared completely under the thickness larger 120 cm. It should be noted that the processes producing the aufeis-forming sources of subsurface water, and the factors of their layered-ice accumulation remain almost unexplored. |
format |
Article in Journal/Newspaper |
author |
V. R. Alekseev |
author_facet |
V. R. Alekseev |
author_sort |
V. R. Alekseev |
title |
Long-term variability of the spring taryn-aufeises |
title_short |
Long-term variability of the spring taryn-aufeises |
title_full |
Long-term variability of the spring taryn-aufeises |
title_fullStr |
Long-term variability of the spring taryn-aufeises |
title_full_unstemmed |
Long-term variability of the spring taryn-aufeises |
title_sort |
long-term variability of the spring taryn-aufeises |
publisher |
Nauka |
publishDate |
2016 |
url |
https://doi.org/10.15356/2076-6734-2016-1-73-92 https://doaj.org/article/0d9d95354da549b6a7f66df03622785e |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) |
geographic |
Arctic Kolyma |
geographic_facet |
Arctic Kolyma |
genre |
Arctic Chukotka Ice permafrost Yakutia Alaska вечная мерзлота |
genre_facet |
Arctic Chukotka Ice permafrost Yakutia Alaska вечная мерзлота |
op_source |
Лëд и снег, Vol 56, Iss 1, Pp 73-92 (2016) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/271 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2016-1-73-92 https://doaj.org/article/0d9d95354da549b6a7f66df03622785e |
op_doi |
https://doi.org/10.15356/2076-6734-2016-1-73-92 |
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Ice and Snow |
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56 |
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73 |
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92 |
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1766342512777101312 |