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

被引：5

作者：

Watanabe, Takahiro ^{[1
,2
]}

Nakamura, Toshio ^{[3
]}

Matsunaka, Tetsuya ^{[4
]}

Nara, Fumiko Watanabe ^{[2
]}

Zhu, Liping ^{[5
]}

Wang, Junbo ^{[5
]}

Kakegawa, Takeshi ^{[2
]}

Nishimura, Mitsugu ^{[4
]}

机构：

[1] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Grad Sch Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan

[3] Nagoya Univ, Ctr Chronol Res, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[4] Tokai Univ, Sch Marine Sci & Technol, Shimizu, Shizuoka 4240902, Japan

[5] Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2013年 / 294卷

关键词：

Tibetan Plateau; Lake Pumoyum Co; AMS; C-14; Lake sediment; Climate change; Old carbon effect; QINGHAI; GEOCHEMISTRY; GLACIATION;

D O I：

10.1016/j.nimb.2012.07.015

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：520 / 523

页数：4

共 2 条

[1] Radiocarbon chronology of a sediment core from Lake Pumoyum Co in the southeastern Tibetan plateau
Watanabe, T.
Nakamura, T.
Nishimura, M.
Matsunaka, T.
Minami, M.
Kakegawa, T.
Nara, F. W.
Zhu, L.
[J]. INTERNATIONAL ASSOCIATION OF THEORETICAL AND APPLIED LIMNOLOGY, VOL 30, PT 4, PROCEEDINGS, 2008, 30 : 611 - 614
[2] A NEW 14C DATA SET OF THE PY608W-PC SEDIMENT CORE FROM LAKE PUMOYUM CO (SOUTHEASTERN TIBETAN PLATEAU) OVER THE LAST 19 KYR
Watanabe, Takahiro
Matsunaka, Tetsuya
Nakamura, Toshio
Nishimura, Mitsugu
Izutsu, Yasuhiro
Minami, Motoyasu
Nara, Fumiko Watanabe
Kakegawa, Takeshi
Zhu, Liping
[J]. RADIOCARBON, 2010, 52 (03) : 1435 - 1442

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