@article{oai:nagoya.repo.nii.ac.jp:00012815, author = {松中, 哲也 and 西村, 弥亜 and 中村, 俊夫 and 渡邊, 隆広 and Zhu, Liping and 寺井, 久慈 and 中野, 志穂 and 奈良, 郁子 and 今井, 章雄 and Matsunaka, Tetsuya and Nishimura, Mitsugu and Nakamura, Toshio and Watanabe, Takahiro and Terai, Hisayoshi and Nakano, Shiho and Nara, Watanabe Fumiko and Imai, Akio}, journal = {名古屋大学加速器質量分析計業績報告書}, month = {Mar}, note = {The reconstruction of palaeoenvironmental history on the Tibetan Plateau after the Last Glacial Maximum (LGM) is important for understanding the relationship of climate change between the Tibetan Plateau and various area in the world. Since 2001, we have been attempting to elucidate the historical change in water circulation after the LGM on the southeastern Tibetan Plateau, where little have been obtained about high resolution palaeoclimate records, using three sediment cores from Lake Pumayum Co located in a basin close to Himalayas. In the present study, we aimed at making clear in detail the change in land water inflow, based on δ^<13>C of TOC, Sand, and Ca-Carbonate records from PY104 and PY409 cores (ca. 4m in length) which date back to 18.4 cal. ka BP and 10.6 cal. ka BP, respectively. The following results have been obtained so far : 1) In the Oldest Dryas period (19 - 14.7 cal. ka BP), the inflow of land water which derived from glaciers and frozen soils began to be intensified at 18 cal. ka BP due to deglaciation and gradually increased toward 15 cal. ka BP. 2) Before beginning of the Bølling / Allerød period (14.7 - 12.8 cal. ka BP), the inflow of land water rapidly became active from 15 cal. ka BP, and the contribution of precipitation remarkably increased together with increase in melting water. 3) In the Younger Dryas period (12.8 - 11.6 cal. ka BP), although relatively dry condition prevailed temporarily, the land water gradually increased. Therefore, the climate in this area was not always cold and dry. 4) From the beginning of the Hypsithermal (ca. 9 cal. ka BP), the inflow of land water further increased and have been kept until present., 第21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20(2008)年度報告}, pages = {81--87}, title = {チベット高原南東域における過去19,000 年間に亘る水循環の歴史的変動}, volume = {20}, year = {2009} }