Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Multidisciplinary Scientific Geoconference, SGEM 2017
Год издания: 2017
Идентификатор DOI: 10.5593/sgem2017/11/S01.020
Ключевые слова: Bottom sediment geochemistry, Lake teletskoe, Late holocene, Southern Siberia, Tree-ring width chronology, Water level
Аннотация: We analyzed the dynamics of Lake Teletskoye water level and attempted to use data on bottom sediment geochemistry in combination with Siberian larch (Larix sibirica) tree-ring width chronology to reconstruct it for late Holocene. In particular, we studied the links among the water level characteristics, precipitation amount, bottom sediment geochemistry, and tree-ring width chronology available for Russian Altai. A correlation analysis revealed the annual water level fluctuations to correlate closely with mean annual temperature and annual precipitation (67% and 33%, respectively). The fluctuations exhibited a negative correlation with the regional tree-ring width chronology. As for the bottom sediments, two components were identified, one of which correlated closely with air temperature and the other with precipitation. Combining these three components, including tree-ring width chronology, provides new possibilities for a complex reconstruction of the lake water level fluctuations occurred during middle and late Holocene based on a regression model. A regression reconstruction model of the dynamics of the Lake Teletskoye water level was calculated for the last millennium. We defined ~60-, ~100-, ~200-year cycles of water level variability in Teletskoye Lake and supposed that the observed fluctuations are due to long-term climatic changes. Of the greatest interest are the identified interdecadal and decadal climate-caused water level fluctuations, since they will enable to estimate indirectly, in the long term, climatic changes in southern Siberia for the past 2-5 thousand years. © SGEM2017. All Rights Reserved.
Журнал: International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Выпуск журнала: Vol. 17, Is. 11
Номера страниц: 159-166
ISSN журнала: 13142704
Издатель: International Multidisciplinary Scientific Geoconference
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