Radiocarbon in tropical tree rings during the Little Ice Age

Hua, Q., Barbetti, M., Zoppi, U., Fink, D., Watanasak, M. and Jacobsen, G. E. (2004). Radiocarbon in tropical tree rings during the Little Ice Age. In: Toshio Nakamura, Koichi Kobayashi, Hiroyuki Matsuzaki, Masafumi Murayama, Yasuo Nagashima, Hirotaka Oda, Yasuyuki Shibata, Yuri Tanaka and Michiaki Furukawa, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms: Proceedings of the Ninth International Conference on Accelerator Mass Spectrometry. Ninth International Conference on Accelerator Mass Spectrometry, Nagoya, Japan,, (489-494). 9 - 13 September, 2002. doi:10.1016/j.nimb.2004.04.092


Author Hua, Q.
Barbetti, M.
Zoppi, U.
Fink, D.
Watanasak, M.
Jacobsen, G. E.
Title of paper Radiocarbon in tropical tree rings during the Little Ice Age
Conference name Ninth International Conference on Accelerator Mass Spectrometry
Conference location Nagoya, Japan,
Conference dates 9 - 13 September, 2002
Proceedings title Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms: Proceedings of the Ninth International Conference on Accelerator Mass Spectrometry   Check publisher's open access policy
Journal name Nuclear Instruments   Check publisher's open access policy
Publisher Elsevier B.V.
Publication Year 2004
Sub-type Fully published paper
DOI 10.1016/j.nimb.2004.04.092
ISSN 0168-583X
Editor Toshio Nakamura
Koichi Kobayashi
Hiroyuki Matsuzaki
Masafumi Murayama
Yasuo Nagashima
Hirotaka Oda
Yasuyuki Shibata
Yuri Tanaka
Michiaki Furukawa
Volume 223-224
Start page 489
End page 494
Total pages 6
Language eng
Abstract/Summary Cross-dated tree-ring cores (Pinus merkusii) from north-central Thailand, spanning AD 1620-1780, were used to investigate atmospheric C-14 for the tropics during the latter part of the Little Ice Age. In addition, a cross-dated section of Huon pine from western Tasmania, covering the same period of time, was investigated. A total of 16 pairs of decadal samples were extracted to alpha-cellulose for AMS C-14 analysis using the ANTARES facility at ANSTO. The C-14 results from Thailand follow the trend of the southern hemisphere, rather than that of the northern hemisphere. This is a surprising result, and we infer that atmospheric C-14 for north-central Thailand, at 17degrees N, was strongly influenced by the entrainment of southern hemisphere air parcels during the southwest Asian monsoon, when the Inter-Tropical Convergence Zone moves to the north of our sampling site. Such atmospheric transport and mixing are therefore considered to be one of the principal mechanisms for regional C-14 offsets. (C) 2004 Elsevier B.V. All rights reserved.
Subjects CX
260301 Geochronology and Isotope Geochemistry
780104 Earth sciences
Keyword Instruments & Instrumentation
Nuclear Science & Technology
Physics, Atomic, Molecular & Chemical
Physics, Nuclear
Radiocarbon
Tree-rings
Atmospheric Transport
Itcz
Asian Monsoon
Little Ice Age
Solar Activity
Atmospheric C-14
Calibration
Terrestrial
Thailand
Progress
Offsets
Antares
Samples
Ams
Q-Index Code CX
Additional Notes Proceedings of the Ninth International Conference on Accelerator Mass Spectrometry

Document type: Conference Paper
Collection: School of Mathematics and Physics
 
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Created: Wed, 15 Aug 2007, 07:36:07 EST