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| Titel |
Biological proxies recorded in a Belukha ice core, Russian Altai |
| VerfasserIn |
T. Papina, T. Blyakharchuk, A. Eichler  , N. Malygina, E. Mitrofanova, M. Schwikowski |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 9, no. 5 ; Nr. 9, no. 5 (2013-10-30), S.2399-2411 |
| Datensatznummer |
250085238
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| Publikation (Nr.) |
 copernicus.org/cp-9-2399-2013.pdf |
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| Zusammenfassung |
| Different biological proxies such as pollen, cysts, and diatoms were
identified and quantified in the upper part of a Belukha ice core from the
Russian Altai. The ice core from the Belukha glacier collected in 2001
(4062 m a.s.l., 49°48' N, 86°34' E) was analyzed with annual
resolution in the period 1964–2000. Daily data of the frequency of synoptic
patterns observed in the Northern Hemisphere along with daily data of
precipitation have been used to identify the predominant atmospheric
circulations (elementary circulating mechanisms, or ECMs) generating the entry of biological proxies on the
glacier surface. It was shown that the high-resolution records of
diatoms, cysts, spores, and plant pollen in the Belukha ice core are the biological proxies
for the changes in the structure of precipitation in the Altai region since
these records can reflect changes in the contribution of different
atmospheric circulation to annual or seasonal precipitation. The joint
consideration of the transport ability of the biological species and the
data of precipitation allowed us to determine the main modern sources of
biological proxies deposited at the Belukha glacier. The main sources of
diatoms in the Belukha ice core are water bodies of the Aral, Caspian, and
northern Kazakhstan basins; coniferous tree pollen originated from the taiga
forest of the boreal zone of western Siberia; pollen of deciduous trees and
herbs from steppe and forest-steppe vegetation in the northern Altai and
eastern Kazakhstan; and cysts and spores of plants were transported from local
water bodies and forests. The identified source regions of the biological
species are supported by back trajectory analyses and are in good agreement
with emission source regions of the trace elements in the ice
core. |
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