2006 Fiscal Year Final Research Report Summary
Study on the dynamics of the englacial and subglacial environment of the ice sheet in East Antarctica using ice sounding radars
| Project/Area Number |
16310016
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
FUJITA Shuji National Institute of Polar Research, Division for Research and Education, Associate Professor, 研究教育系, 助教授 (30250476)
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| Co-Investigator(Kenkyū-buntansha) |
FUJI Yoshiyuki National Institute of Polar Research, Director General, 所長 (20125214)
FURUKAWA Teruo National Institute of Polar Research, Division for Research and Education, Research Associate, 研究教育系, 助手 (70261120)
MOTOYAMA Hideaki National Institute of Polar Research, Division for Research and Education, Professor, 研究教育系, 教授 (20210099)
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| Project Period (FY) |
2004 – 2006
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| Keywords | Antarctica / ice sheet / radar / ice core / remote sensing / Dome Fuji / wave propagation / birefringence |
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| Research Abstract |
We analyzed data from deep radar sounding of the Antarctic ice sheet. By analysis of the radar data, we first investigated wave propagation in wide area in Antarctica. Subsequently, we studied effects from crystal orientation fabrics, dynamical condition of the ice sheet, bottom environment and impurity. Outline of the result is as follows.
1.In the first fiscal year, we made numerical experiments using a wave propagation model.
2.We compared the simulated results with the observational data.
3.We assessed internal structure of the Antarctic ice sheet. We put special emphasis on the following points.
(1)I identified and analyzed distribution of the isochrones (constant time horizon).
(2)We investigated three dimensional distribution of the wave scattering mechanisms within the ice sheet.
(3)We identified echo free zone within the Antarctic ice sheet.
4,We made a computer program to archive old data of ice radar. Old data is recorded as video image, which we needed to digitize as numerical data.
Overall, we made better archiving the old data and studied in detail potential of the ice radar data for the ice dynamics study in Antarctica.
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[Journal Article] 1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica2007
Author(s)
Parrenin, F., Dreyfus, G., Durand, G., Fujita, S., Gagliardini, O., Gillet, F., Jouzel, J., Kawamura, K., Lhomme, N., Masson-Delmotte, V., Ritz, C., Schwander, J., Shoji, H., Uemura, R., Watanabe, O., Yoshida, N.
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Journal Title
Climate of the Past 3
Pages: 243-259
Description
「研究成果報告書概要(和文)」より
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[Journal Article] 1-Dice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica2007
Author(s)
Parrenin, F., Dreyfus, G., Durand, G., Fujita, S., Gagliardini, O., Gillet, F., Jouzel, J., Kawamura, K., Lhomme, N., Masson-Delmotte, V., Ritz, C., Schwander, J., Shoji, H., Uemura, R., Watanabe, 0., Yoshida, N.
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Journal Title
Climate of the Past 3
Pages: 243-259
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Interpreting ancient ice in a shallow ice core from the South Yamato (Antarctica) blue ice area using flow modeling and compositional matching to deep ice cores2006
Author(s)
Moore, J.C., Nishio, F., Fujita, S., Narita, H., Pasteur, E., Grinsted, A., Sinisalo, A., Maeno, N
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Journal Title
Journal of Geophysical Research D16302
Pages: 2005JD006343
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Interpreting ancient ice in a shallow ice core from the South Yamato (Antarctica) blue ice area using flow modeling and compositional matching to deep ice cores.2006
Author(s)
Moore, J.C., Nishio, F., Fujita, S., Narita, H., Pasteur, E., Grinsted, A., Sinisalo, A., Maeno, N.
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Journal Title
Journal of Geophysical Research
Pages: D16302, 10.1029/2005JD006343. 2005JD006343R
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Stratigraphy analysis of Dome Fuji Antarctic ice core using an optical scanner2004
Author(s)
Takata, M., Iizuka, Y., Hondoh, T., Fujita, S., Fujii, Y., Shoji, H.
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Journal Title
Annals of Glaciology 39
Pages: 467-472
Description
「研究成果報告書概要(和文)」より
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[Journal Article] <SO_4>^<2-> minimum in the summer snow layer at Dome Fuji station, Antarctica and its probable mechanism.2004
Author(s)
Iizuka, Y., Fujii, Y., Hirasawa, N., Suzuki, T., Motoyama, H., Furukawa他 T., Hondho, T.
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Journal Title
Journal of Geophysical Research 109
Pages: D04307-1-D04307-6
Description
「研究成果報告書概要(和文)」より
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[Journal Article] SO42-minimum in the summer snow layer at Dome Fuji station, Antarctica and its probable mechanism.2004
Author(s)
Iizuka, Y., Fujii, Y., Hirasawa, N., Suzuki, T., Motoyama, H., Furukawa, T., Hondho, T.
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Journal Title
Journal of Geophysical Research 109(D4)
Pages: D04307-1 to D04307-6
Description
「研究成果報告書概要(欧文)」より
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