1997 Fiscal Year Final Research Report Summary
Environment change due to decreasing earth's magnetic field
| Project/Area Number |
08041115
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
YAMAGISHI Hisao Division of Research , National Institute of Polar Research , Associate Professor, 研究系, 助教授 (20132714)
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| Co-Investigator(Kenkyū-buntansha) |
FUJITAKA kazunobu National Institute of Radiological Science, 3rd Research Group, Division Head, 第3研究グループ, 総合研究官 (70165398)
NISHINO Masanori Nagoya University, Solar-Terrestrial Environment, 太陽地球環境研究所, 講師 (70023679)
MAKITA Kazuo Takushoku University, Faculty of Engineering, Professor, 工学部, 教授 (40129945)
YUKIMATSU Akira Division of Research, National Institute of Polar Research, Research Associate, 研究系, 助手 (70260007)
FUKUKAWA Masahide National Institute of Radiological Science, Department of human environment research, Senior Researcher, 人間環境研究部, 主任研究官 (40238671)
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| Project Period (FY) |
1996 – 1997
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| Keywords | Geomagnetic anomaly region / Riometer / VLF natural wave / Gamma ray / UVB / Proton magnetometer / Photometer / Cosmic Ray |
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| Research Abstract |
We improved and maintained the following instruments installed in the previous year .
San Martinho observatory (1) Gamma Ray Spectrometer (2) UVB meter (3) Riometer (f = 30.4 MHz) (4) VLF natural wave receiver (f = 0.4 - 10kHz) (5) High sensitive all-sky TV camera
Cachoeira Paulist observatory (1) Gamma Ray Spectrometer (2) UVB meter
We also installed following new instruments at San Martinho observatory . (1) Photometer (【lambda bar】 = 550.7nm and 630.0nm ) (2) Proton magnetometer (3) Radio wave detector ( f = 500kHz - 2MHz )
From the riometer and the natural radio wave observations , the distinct phenomena which uniquely occur in this anomaly region are not yet observed at the present . However , the weak cosmic noise absorption and also the increasing of natural radio wave intensity are occasionally seen near the local noon time . TV camera and photometer were operating in a few days for observing the optical event , however the clear phenomena was not observed in this time . The magnitude of Gamma ray intensity in this area was larger than that of other same latitude region in the world . From the proton magnetometer observation , the total intensity of geomagnetic field around San Martinho observatory was between 23100n T and 23299n T . This value was consistent to the calculated value of 1995 IGRF model .
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[Publications] Schuch, N. J., S. F. Adaime, N. U. V. Oliveira, E. Bortolotto, P. J. Sarkis, D. K. Pinheiro, E. Ludke, F. A. Wendt, N. B. Trivedi, J. M. Costa, V. W. J. H. Kirchhoff, S. L. G. Dutra, J. H. A. Sobral, M A. Abudu, H. Takahashi: "南部の宇宙観測所"ブラジル地球物理. 15・1. 65-70 (1997)
Description
「研究成果報告書概要(和文)」より
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[Publications] Makita, K.,S. Okano, A. Yukimatu, M. Nishimoto, K. Shibasaki, H. Yamamoto, Y. Kikuchi, K. Nozaki, K. Fujitaka, M. Furukawa, H. Takahashi, N. J. Suhuch: "Upper atmosphere observations in the Brazilian geomagnetic anomaly region"Bulletin Science engineering , Takushoku Univ.. 6,2. 69-72 (1997)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Schuch N. J., S. F. Adaime, N. U. V. Oliveira, E. Bortolotto, P. J. Sarkis, D. K. Pinheiro, E. Ludke, F. A. Wendt, N. B. Trivedi, J. M. Costa, V. W. J. H. Kirchhoff, S. L. G. Dutra, J. H. A. Sobral, M. A. Abudu and H. Takahashi: "O observatorio espacial do sul"Revista Brasileira de Geofisica. 15(1). 65-70 (1997)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Poaazr, C. T.,E. Echer, F. M. Saldanha, F. Guarnieri, N. M. Scremin, I. K. Ponheiro, E. Ludke, N. J. Schuch: "Software de automacao de dados VIA interface RS 232"Proceeding 2nd Simposio Nacional de Informatica , FAFRA, Santana Maria. 23-26 sep.. 69-74 (1997)
Description
「研究成果報告書概要(欧文)」より
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