Estimation of annual layer thickness from stratigraphical analysis of Dome Fuji deep ice core (scientific paper)

元データ 国立極地研究所

概要

Dating of ice cores is of important but is difficult for an ice core where there is low snow accumulation, and also for the deep part because seasonal chemical and isotopic signals are not easily preserved due to vapor migration after snow deposition and molecular diffusion in the deep part of ice sheet. In this paper, an attempt to reveal annual layer thickness is conducted on the basis of precise number density measurement of air bubbles and air hydrates. The annual layer thickness from air bubbles and hydrates agrees well with a calculated value within 10-15% at all depths of the 2500 m deep core. The obtained thickness in the interglacial period according to Eemian period in the Greenland ice core was half of the calculated value.

著者

Watanabe Okitsugu National Institute of Polar Research, Research Organization of Information and Systems
Narita Hideki Institute of Low Temperature Science Pan-Okhotsk Research Center, Hokkaido University
Satow Kazuhide Nagaoka National College of Technology
本堂 武夫 北大
Hondoh Takeo Institute of Low Temperature Science, Hokkaido University
Hori Akira Institute of Low Temperature Science, Hokkaido University
Fujii-Miyamoto Michiko Institute of Low Temperature Science, Hokkaido University
Shoji Hitoshi Kitami Institute of Technology
Azuma Nobuhiko Nagaoka University of Technology
Watanabe O National Institute Of Polar Research Research Organization Of Information And Systems
Watanabe Okitsugu National Institute Of Polar Research
Kawaguchi Sadao Nagaoka National College Of Technology
Shimohara Kimiko Kitami Institute of Technology
Narita Hideki Institute Of Low Temperature Science Pan-okhotsk Research Center Hokkaido University
Hiramatsu Tadayasu Institute of Low Temperature Science, Hokkaido University
Kanamori Satoru Institute For Hydrospheric And Atmospheric Sciences Nagoya University
Narita Hideki Institute Of Low Temperature Science Hokkaido University
Azuma N Nagaoka University Of Technology
Satow Kazuhide Nagaoka College Of Technology
Watanabe Okitsusgu National Institute of Polar Research
Kanamori Satoru National Institute of Polar Research
Hondoh Takeo Institute Of Low Temperature Science Hokkaido University
Satow Kazuhide Nagoya Technical College
Fujii-miyamoto Michiko Institute Of Low Temperature Science Hokkaido University
Hori Akira Department Of Materials Science Faculty Of Engineering University Of Tokyo
Shinbori K Hokkaido Univ. Sapporo
Koga S National Inst. Resources And Environment Tsukuba
Hiramatsu Tadayasu Institute Of Low Temperature Science Hokkaido University

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