Environment change due to decreasing earth's magnetic field

地球磁场减弱导致环境变化

• 批准号: 08041115
• 负责人: YAMAGISHI Hisao
• 金额: $ 5.18万
• 依托单位: National Institute of Polar Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08041115/
• 关键词: Geomagnetic anomaly region; Riometer; VLF natural wave; Gamma ray; UVB; Proton magnetometer; Photometer; Cosmic Ray; ブラジル磁気異常帯; 放射線帯; 宇宙線被爆; 地球磁場; オゾン層; UVB

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 cameraCachoeira Paulist observatory (1) Gamma Ray Spectrometer (2) UVB meterWe 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 .

我们改进和维护了前一年安装的下列仪器：圣马蒂纽天文台（1）伽马射线分光仪（2）UVB测量仪（3）Riometer（f = 30.4 MHz）（4）甚低频自然波接收机（f = 0.4 - 10 kHz）（5）高灵敏度全天空电视摄像机卡舒埃拉-保利斯特天文台（1）伽马射线光谱仪（2）UVB测量仪我们还在San Martinho天文台安装了以下新仪器。(1)光度计（λ bar = 550.7nm和630.0nm）（2）质子磁力计（3）无线电波探测器（f = 500 kHz-2 MHz）从磁强计和天然无线电波观测来看，目前还没有观测到该异常区特有的独特现象。但是，在当地中午时分附近，偶尔会看到微弱的宇宙噪声吸收和天然电波强度的增加。电视摄像机和光度计在几天内运行，以观察光学事件，但在这段时间内没有观察到明显的现象。该地区的γ射线强度值大于世界同纬度地区。根据质子磁力仪的观测，圣马蒂纽地磁台周围的地磁场总强度在23100 ~ 23299 nT之间。该值与1995年IGRF模型的计算值基本一致。

项目成果

Kazuo Makita: "Change of earth enviromnet due to the decreasing geomagnetic field." 南極資料(Antarctic Record). 40・1. 15-24 (1996)

Kazuo Makita：“由于地磁场减弱而导致的地球环境的变化。”40・1（1996）。

Pozzar, C. T., E. Echer, F. S. Saldnha, F. Guarnieri, D. K. Pinheiro, E. Ludke, N. J. Schuch: "ガイガーカウンターのデータ収集のソフトウェアー"第2回情報シンポジウム・プロシーディングス. 121-125 (1997)

Pozzar, C. T., E. Echer, F. S. Saldnha, F. Guarnieri, D. K. Pinheiro, E. Ludke, N. J. Schuch：“盖革计数器数据收集软件”第二届信息研讨会论文集（1997 年）。

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-

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 ：“南方空间观测站”巴西地球物理学15・1。

Furukawa M.: "Natural radiant rays in Earth"Earth. 22. 55-62 (1998)

Furukawa M.：“地球中的自然辐射线”地球。

藤高 和信: "宇宙と地球の放射線環境-その未来予測への挑戦-"地球. 22. 5-8 (1998)

Kazunobu Fujitaka：“太空和地球的辐射环境 - 预测其未来的挑战 -”地球。22. 5-8 (1998)