TY - JOUR
T1 - A chronology of the PY608E-PC sediment core (Lake Pumoyum Co, southern Tibetan Plateau) based on radiocarbon dating of total organic carbon
AU - Watanabe, Takahiro
AU - Nakamura, Toshio
AU - Matsunaka, Tetsuya
AU - Nara, Fumiko Watanabe
AU - Zhu, Liping
AU - Wang, Junbo
AU - Kakegawa, Takeshi
AU - Nishimura, Mitsugu
N1 - Funding Information:
We are deeply indebted to the members of the China–Japan Scientific Research Expedition to Lake Pumoyum Co for their help during the acquisition of the sediment cores. The members of the CCR, Nagoya University, were helpful during sample preparation and analyses. We also acknowledge the staff of Tohoku University for the sample preparation. A. Zondervan and S. Krivonogov are acknowledged for their helpful comments and suggestions for improving the manuscript. This research was partly supported by a Grant-in-Aid for JSPS Fellows to T. W. (No. 20-4967) and by a Grant-in-Aid for JSPS Bilateral Joint Projects FY 2009-2011 to M. N.
PY - 2013/1
Y1 - 2013/1
N2 - Paleoclimatic records from the Tibetan Plateau provide important clues for understanding the Asian monsoon and Asian climate systems. To reconstruct climatic and environmental changes in the southern Tibetan Plateau, a 3.77-m-long sediment core (PY608E-PC) was taken from the southeastern part of Lake Pumoyum Co in August 2006. Because terrestrial plant residues are extremely rare in this core, we performed radiocarbon dating on the total organic carbon fraction. We also estimated the old carbon effect and radiocarbon reservoir age of the total organic carbon fraction. Using these estimates, we propose a new radiocarbon chronology for past climatic changes from ca. 12,500 to 700 cal BP. The linear sedimentation rate of the core was founded to be constant at 32.0 cm/kyr, indicating stable sedimentation conditions in Lake Pumoyum Co from the period of the Younger Dryas to the Holocene.
AB - Paleoclimatic records from the Tibetan Plateau provide important clues for understanding the Asian monsoon and Asian climate systems. To reconstruct climatic and environmental changes in the southern Tibetan Plateau, a 3.77-m-long sediment core (PY608E-PC) was taken from the southeastern part of Lake Pumoyum Co in August 2006. Because terrestrial plant residues are extremely rare in this core, we performed radiocarbon dating on the total organic carbon fraction. We also estimated the old carbon effect and radiocarbon reservoir age of the total organic carbon fraction. Using these estimates, we propose a new radiocarbon chronology for past climatic changes from ca. 12,500 to 700 cal BP. The linear sedimentation rate of the core was founded to be constant at 32.0 cm/kyr, indicating stable sedimentation conditions in Lake Pumoyum Co from the period of the Younger Dryas to the Holocene.
KW - AMS
KW - C
KW - Climate change
KW - Lake Pumoyum Co
KW - Lake sediment
KW - Old carbon effect
KW - Tibetan Plateau
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U2 - 10.1016/j.nimb.2012.07.015
DO - 10.1016/j.nimb.2012.07.015
M3 - Article
AN - SCOPUS:84870923509
VL - 294
SP - 520
EP - 523
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
ER -
