@article{oai:nagoya.repo.nii.ac.jp:00011853,
 author = {渡邊, 隆広 and WATANABE, Takahiro and 中村, 俊夫 and NAKAMURA, Toshio and 西村, 弥亜 and NISHIMURA, Mitsugu and 松中, 哲也 and MATSUNAKA, Tetsuya and 掛川, 武 and KAKEGAWA, Takeshi and Zhu, Liping},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {Paleo-climatic records from the Tibetan Plateau provide important clues for understanding the global climate system and the Asian monsoon variability. Paleo-climatic changes in the central, northern and western Tibet have been documented in previous studies of sediments from several lakes (Fontes et al. 1993, Morrill et al., 2006). However, details of the continuous environmental changes during the late Quaternary period, in the southern part on the plateau are still unknown. Lake Pumoyum Co is located in the southeastern Tibetan plateau. In 2001-2004, continuous sediment cores (PY104 and PY409) were taken from the Pumoyum Co for the reconstruction of climatic changes. In this study, we carried out ^<14>C dating and stable carbon isotope measurements of plant residues and TOC from the Pumoyum Co sediment, covering the period from the last glacial to the Holocene. The upper part of the PY104 (180-0 cm depth) was dated as Holocene, using the ^<14>C measurement of the plant residues (after ca. 10 cal ka BP). In this study, the ^<14>C dating of the plant residues revealed that the PY104 contained a record from the end of the last glacial period to the present, over the past 18.9 cal ka BP. The calibrated ages for the plant residues of the PY104 became progressively older, with their depths ranging from 51 to 369 cm. The calibrated ages of the plant residues in the sediments were found to be younger than those of the TOC by ca. 600-7800 yr. This result could have been caused by the relatively large supply of terrestrial organic materials containing old carbon ("old carbon effects" from lake terrace, paleosol and/or stratum with dead ^<14>C)., 第20回名古屋大学年代測定総合研究センターシンポジウム平成19(2007)年度報告<第2部> Proceedings of the 20th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research in 2007 日時:平成20 (2008)年1月10日(木)～11日(金) 会場:名古屋大学野依記念学術交流館 Date:January10th-11th, 2008 Venue:Nagoya Uhiversity Noyori Conference Hall},
 pages = {51--58},
 title = {シベリア・チベット地域の湖沼から採取した湖底柱状堆積物の放射性炭素年代測定-2 : PY104, PY409コア試料(チベット・プマユムツォ湖)の年代決定(第20回名古屋大学年代測定総合研究センターシンポジウム平成19(2007)年度報告)},
 volume = {19},
 year = {2008}
}