Control of wind strength and frequency in the Aral Sea basin during the late Holocene
Changing content of detrital input in laminated sediments traced by XRF scanning and microfacies analyses reflect prominent variations in sedimentation processes in the Aral Sea. A high-resolution record of titanium from a core retrieved in the northwestern Large Aral Sea allows a continuous reconst...
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ftkazanuniv:oai:dspace.kpfu.ru:net/140698 2023-05-15T16:29:40+02:00 Control of wind strength and frequency in the Aral Sea basin during the late Holocene Sorrel P. Oberhänsli H. Boroffka N. Nourgaliev D. Dulski P. Röhl U. 2007 https://dspace.kpfu.ru/xmlui/handle/net/140698 unknown Quaternary Research 3 67 371 http://dspace.kpfu.ru/xmlui/bitstream/net/140698/-1/SCOPUS00335894-2007-67-3-SID34147220421-p1.pdf 0033-5894 https://dspace.kpfu.ru/xmlui/handle/net/140698 SCOPUS00335894-2007-67-3-SID34147220421 Aral Sea Chemical composition Laminated sediments Late Holocene Siberian High Wind dynamics Article 2007 ftkazanuniv 2022-01-01T09:47:56Z Changing content of detrital input in laminated sediments traced by XRF scanning and microfacies analyses reflect prominent variations in sedimentation processes in the Aral Sea. A high-resolution record of titanium from a core retrieved in the northwestern Large Aral Sea allows a continuous reconstruction of wind strength and frequency in western Central Asia for the past 1500 yr. During AD 450-700, AD 1210-1265, AD 1350-1750 and AD 1800-1975, detrital inputs (bearing titanium) are high, documenting an enhanced early spring atmospheric circulation associated with an increase in intensity of the Siberian High pressure system over Central Asia. In contrast, lower titanium content during AD 1750-1800 and AD 1980-1985 reflects a diminished influence of the Siberian High during early spring with a reduced atmospheric circulation. A moderate circulation characterizes the time period AD 700-1150. Unprecedented weakened atmospheric circulation over western Central Asia are inferred during ca. AD 1180-1210 and AD 1265-1310 with a considerable decrease in dust storm frequency, sedimentation rates, lamination thickness and detrital inputs (screened at 40-μm resolution). Our results are concurrent with changes in the intensity of the Siberian High during the past 1400 yr as reported in the GISP2 Ice Core from Greenland. © 2007 University of Washington. Article in Journal/Newspaper Greenland ice core Kazan Federal University Digital Repository Greenland |
institution |
Open Polar |
collection |
Kazan Federal University Digital Repository |
op_collection_id |
ftkazanuniv |
language |
unknown |
topic |
Aral Sea Chemical composition Laminated sediments Late Holocene Siberian High Wind dynamics |
spellingShingle |
Aral Sea Chemical composition Laminated sediments Late Holocene Siberian High Wind dynamics Sorrel P. Oberhänsli H. Boroffka N. Nourgaliev D. Dulski P. Röhl U. Control of wind strength and frequency in the Aral Sea basin during the late Holocene |
topic_facet |
Aral Sea Chemical composition Laminated sediments Late Holocene Siberian High Wind dynamics |
description |
Changing content of detrital input in laminated sediments traced by XRF scanning and microfacies analyses reflect prominent variations in sedimentation processes in the Aral Sea. A high-resolution record of titanium from a core retrieved in the northwestern Large Aral Sea allows a continuous reconstruction of wind strength and frequency in western Central Asia for the past 1500 yr. During AD 450-700, AD 1210-1265, AD 1350-1750 and AD 1800-1975, detrital inputs (bearing titanium) are high, documenting an enhanced early spring atmospheric circulation associated with an increase in intensity of the Siberian High pressure system over Central Asia. In contrast, lower titanium content during AD 1750-1800 and AD 1980-1985 reflects a diminished influence of the Siberian High during early spring with a reduced atmospheric circulation. A moderate circulation characterizes the time period AD 700-1150. Unprecedented weakened atmospheric circulation over western Central Asia are inferred during ca. AD 1180-1210 and AD 1265-1310 with a considerable decrease in dust storm frequency, sedimentation rates, lamination thickness and detrital inputs (screened at 40-μm resolution). Our results are concurrent with changes in the intensity of the Siberian High during the past 1400 yr as reported in the GISP2 Ice Core from Greenland. © 2007 University of Washington. |
format |
Article in Journal/Newspaper |
author |
Sorrel P. Oberhänsli H. Boroffka N. Nourgaliev D. Dulski P. Röhl U. |
author_facet |
Sorrel P. Oberhänsli H. Boroffka N. Nourgaliev D. Dulski P. Röhl U. |
author_sort |
Sorrel P. |
title |
Control of wind strength and frequency in the Aral Sea basin during the late Holocene |
title_short |
Control of wind strength and frequency in the Aral Sea basin during the late Holocene |
title_full |
Control of wind strength and frequency in the Aral Sea basin during the late Holocene |
title_fullStr |
Control of wind strength and frequency in the Aral Sea basin during the late Holocene |
title_full_unstemmed |
Control of wind strength and frequency in the Aral Sea basin during the late Holocene |
title_sort |
control of wind strength and frequency in the aral sea basin during the late holocene |
publishDate |
2007 |
url |
https://dspace.kpfu.ru/xmlui/handle/net/140698 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core |
genre_facet |
Greenland ice core |
op_source |
SCOPUS00335894-2007-67-3-SID34147220421 |
op_relation |
Quaternary Research 3 67 371 http://dspace.kpfu.ru/xmlui/bitstream/net/140698/-1/SCOPUS00335894-2007-67-3-SID34147220421-p1.pdf 0033-5894 https://dspace.kpfu.ru/xmlui/handle/net/140698 |
_version_ |
1766019368936800256 |