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  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): Control of wind strength and frequency in the Aral Sea basin during the late Holocene. - Quaternary Research, 67, 3, 371-382.
https://doi.org/10.1016/j.yqres.2006.12.003

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_235300 Versions-Permalink: -
Genre: Zeitschriftenartikel

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 Urheber:
Sorrel, P.1, Autor
Oberhänsli, Hedi2, Autor              
Boroffka, N.1, Autor
Nourgaliev, D.1, Autor
Dulski, Peter2, Autor              
Röhl, U.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
25.2 Climate Dynamics and Landscape Evolution, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146046              

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Schlagwörter: Chemical composition; Laminated sediments; Wind dynamics; Siberian High; Aral Sea; Late Holocene
 DDC: 550 - Earth sciences
 Zusammenfassung: 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.

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 Datum: 2007
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: eDoc: 9761
GFZPOF: 3.0 Klimavariabilität und Lebensraum des Menschen
DOI: 10.1016/j.yqres.2006.12.003
 Art des Abschluß: -

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Titel: Quaternary Research
Genre der Quelle: Zeitschrift, SCI, Scopus
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 67 (3) Artikelnummer: - Start- / Endseite: 371 - 382 Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals417