Contribution of aeolian dust in Japan Sea sediments estimated from ESR signal intensity and crystallinity of quartz

Late Quaternary hemipelagic sediments in the Japan Sea contain aeolian dust from East Asia which potentially records past variations in the Asian monsoon and the westerly jet. However, extracting information about aeolian dust from Japan Sea sediments is difficult because the sediments also contain...

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Bibliographic Details
Published in:Geochemistry, geophysics, geosystems : G3 geophysics, geosystems : G3, 2007-02, Vol.8 (2), p.np-n/a
Main Authors: Nagashima, K., Tada, R., Tani, A., Toyoda, S., Sun, Y., Isozaki, Y.
Format: Article
Language:English
Subjects:
aeolian dust
crystallinity
electron spin resonance (ESR) method
Japan Sea
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Summary:Late Quaternary hemipelagic sediments in the Japan Sea contain aeolian dust from East Asia which potentially records past variations in the Asian monsoon and the westerly jet. However, extracting information about aeolian dust from Japan Sea sediments is difficult because the sediments also contain detrital material from the Japanese Islands. Here we present a method for extracting the aeolian dust components from Japan Sea hemipelagic sediments using provenance analysis of different size fractions. Hemipelagic sediments of the Japan Sea can be described by a combination of two populations characterized by lognormal grain size distributions with different median grain sizes, which are called the coarser (2–15 μm) and the finer (
ISSN:1525-2027
1525-2027
DOI:10.1029/2006GC001364