Research on Electromagnetic Radiation and Propagation from the Earth

地球电磁辐射及其传播研究

• 批准号: 61540309
• 负责人: HASHIMOTO Kozo
• 金额: $ 0.83万
• 依托单位: Tokyo Denki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61540309/
• 关键词: Ray Tracing; Hot Plasma; Nonthermal Continuum; Electrostatic Cyclotron Waves; Z mode; Polarization; Arrival Directions; オーロラ波; DEー1; AKR; Oモード; ホイスラーモード; 偏波レイトレイシング; DE-1; グラフィッ端末; 静電波; 電磁波

This research covers the following two topics.1. Ray tracing in a hot plasmaRay tracing code in a hot plasma which can calculate ray paths of both electrostatic and electromagnetic waves was developped. This is applied to propagation of the electrostatic cyclotron waves near the equator and observed areas of the waves by scientific satellites are explained. Propagation processes and continuous conversions of the electrostatic waves to the Z mode and its mode conversion to the O mode through the Radio Window are clarified. This result is valuable for the generation mechanism of the nonthermal continuum radiation.2. Analysis of plasma waves observed by a scientific satelliteElectromagnetic plasma waves observed by the DE-1 satellite are analyzed. Observed areas of the Z mode are surveyed and the results are compared with ray tracing calculations. Possibility of a new generation mechanism of the Z mode is suggested. Another paper analyzes auroral waves observed by the same satellite. This discriminates wave propagation modes by polarizations, arrival directions as well as wave spectra. Ray tracing confirms these results.

这项研究涵盖了以下两个主题1。在热等离子体中，在热等离子体中以热等离子体的方式进行射线跟踪，该射线可以计算静电波和电磁波的射线路径。这应用于在赤道附近的静电旋转剂波的传播，并解释了科学卫星观察到的波浪区域。阐明了静电波到Z模式的传播过程和连续转换，并通过无线电窗口转换为O模式。该结果对于非热连续辐射的发电机理很有价值。2。分析了通过DE-1卫星观察到的科学卫星电磁等离子体波观察到的血浆波的分析。调查了Z模式的观察区域，并将结果与​​射线追踪计算进行了比较。提出了Z模式的新一代机制的可能性。另一篇论文分析了同一卫星观察到的极光波。这通过极化，到达方向和波光谱区分波浪传播模式。射线追踪证实了这些结果。

项目成果

K.Hashimoto;W.Calvert: J.Geophysical Research. (1988)

K.Hashimoto；W.Calvert：J.地球物理研究。

K.Yamaashi,K.Hashimoto,I.Kimura.: Memoirs of National Institute of the Polar Research. No.47. 97-108 (1987)

K.Yamaashi、K.Hashimoto、I.Kimura.：国立极地研究所回忆录。

W.Calvert,K.Hashimoto.: Journal of Geophysical Research. (1988)

W.Calvert，K.Hashimoto。：地球物理研究杂志。

K. Yamaashi,; K. Hashimoto,; I. Kimura.: "3-D Electrostatic and Electromagnetic ray tracing in the Magnetosphere" Memoirs of National Institute of Ploar Research. No.47. 97-108 (1987)

K.山石，；

K.Yamaashi;K.Hashimoto;I.Kimura: Memoirs of National Institute of Polar Research. (1987)

K.Yamaashi；K.Hashimoto；I.Kimura：国家极地研究所回忆录。