Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data
Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data
复制标题
使用颗粒尺寸数据的端元模型重建过去 180ka 期间撒哈拉沙尘向东地中海的输送
DOI:
10.1017/qua.2019.71
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发表时间:
2020
影响因子:
2.3
通讯作者:
Gerhard
中科院分区:
文献类型:
--
作者:
Beuscher;Ehrmann;Werner;Krüger;Stefan;Schmiedl;Gerhard
Endmember modelling on the terrigenous silt fraction of nine marine sediment cores spanning up to 180,000 years reveals the influx of North African dust into the Eastern Mediterranean Sea. The dust grain size modes decrease with transport distance, from >50 µm off the African coast to ca. 30 µm in the Aegean Sea. The dust signal is strongly influenced by hydrological changes in northern Africa. Changes from arid to humid periods are documented in the grain size data of all cores. The climatic signal gets weaker with growing distance from the source and close to large fluvial sediment sources such as the Nile. Frequency and wavelet analyses show a strong orbital precession signal that is known to trigger the migration of the monsoonal rain belt in northern Africa. The influence of climate changes on suborbital time scales on dust influx is less distinct, but Dansgaard-Oeschger interstadials and Heinrich-like events are documented in some cores. In the sediment core closest to the source, three endmembers represent one or more dust sources in northern Africa. With growing distance from the source, the three modes cannot be separated anymore and appear as one multimodal dust endmember.
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影响因子:
3.7
作者:
Ehrmann W;Schmiedl G;Beuscher S;Krüger S
通讯作者:
Krüger S
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
G. Coudé
通讯作者:
G. Coudé
影响因子:
3.7
作者:
Beuscher S;Krüger S;Ehrmann W;Schmiedl G;Milker Y;Arz H;Schulz H
通讯作者:
Schulz H
DOI:
10.3929/ethz-b-000122570
发表时间:
2016
期刊:
--
影响因子:
--
作者:
Hoffmann, Dirk L.
通讯作者:
Hoffmann, Dirk L.
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
G. Coudé
通讯作者:
G. Coudé