A chronology of the PY608E-PC sediment core (Lake Pumoyum Co, southern Tibetan Plateau) based on radiocarbon dating of total organic carbon

Takahiro Watanabe, Toshio Nakamura, Tetsuya Matsunaka, Fumiko Watanabe Nara, Liping Zhu, Junbo Wang, Takeshi Kakegawa, Mitsugu Nishimura

研究成果: Article査読

4 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)520-523
ページ数4
ジャーナルNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
294
DOI
出版ステータスPublished - 2013 1月

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 器械工学

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