TY - JOUR
T1 - Linking the10Be continental record of Lake Baikal to marine and ice archives of the last 50 ka
T2 - Implication for the global dust-aerosol input
AU - Aldahan, A.
AU - Possnert, G.
AU - Peck, J.
AU - King, J.
AU - Colman, S.
PY - 1999/9/15
Y1 - 1999/9/15
N2 - We present here a 10Be profile from the continental sediments of Lake Baikal (the world's largest fresh water lake), which, for the first time, shows the ≈ 40 ka 10Be enhancement and a pattern that strongly matches those from the marine and ice records for the last 50 ka. This finding provides a new horizon for global and regional correlation of continental archives. Additionally, our VADM-predicted 10Be production confirms and further strengthens a common global cause (geomagnetic field intensity) for the change in atmospheric 10Be over the last 50 ka. We also show that most of the 10Be inventory to the lake has been provided by riverine input, but with a significant addition from direct precipitation and dust-aerosol fallout. We estimate a higher dust-aerosol contribution of 10Be during the Holocene and interstadial stage 3 (22-50 ka) as compared with the glacial period (12-22 ka).
AB - We present here a 10Be profile from the continental sediments of Lake Baikal (the world's largest fresh water lake), which, for the first time, shows the ≈ 40 ka 10Be enhancement and a pattern that strongly matches those from the marine and ice records for the last 50 ka. This finding provides a new horizon for global and regional correlation of continental archives. Additionally, our VADM-predicted 10Be production confirms and further strengthens a common global cause (geomagnetic field intensity) for the change in atmospheric 10Be over the last 50 ka. We also show that most of the 10Be inventory to the lake has been provided by riverine input, but with a significant addition from direct precipitation and dust-aerosol fallout. We estimate a higher dust-aerosol contribution of 10Be during the Holocene and interstadial stage 3 (22-50 ka) as compared with the glacial period (12-22 ka).
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U2 - 10.1029/1999GL900469
DO - 10.1029/1999GL900469
M3 - Article
AN - SCOPUS:0033567442
SN - 0094-8276
VL - 26
SP - 2885
EP - 2888
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 18
M1 - 1999GL900469
ER -