Pc5频段上电离层离子加热估值  

The Estimation of Ionospheric ions Heating in the Range of Pc5 Geomagnetic Pulsation

作　　者：赵正予[1] 吴大传[1] 施先清[1] 李开春 

机构地区：[1]武汉大学空间物理系,中国电波传播研究所

出　　处：《电波科学学报》1996年第4期73-81,共9页Chinese Journal of Radio Science

摘　　要：本文利用欧洲非相干散射雷达（ＥＩＳＣＡＴ）的观测数据和地面同步测量的地磁脉动Ｐｃ５活动，采用维纳滤波器方法对电离层离子速度和离子温度的波动与Ｐｃ５活动的相关进行分析和估值。四天的实验结果表明，在Ｐｃ５频段（０．８～８ＭＨｚ），离子速度、离子温度与磁脉动Ｈ分量有着良好的相关。利用电离层Ｆ层离子加热的简化公式，当二者相关良好时，实验离子加热估值与理论值符合较好，并且给出了在何种漂移速度阀值下，离子将产生加热效应。Using ionospheric data collected from the four days operations of the EISCAT radar and the activities of Pcs geomagnetic pulsations measured synchronistically,and adopting the Wiener filter method,an analysis and anestimation concerning ions velocity,ions temperature and the variation of Pcs H component is made.It is found thatthere is a good correlation between ions velocity,ions temperature and H component of geomagnetic pulsation in thePcs range.When the correlation is good,utilizing the simplified formula of F layer ionorpheric ions heating,the gotexperimental R value is accordant with the theoretic value and the threshold of drift velocity under which the ions willproduce heating effects is indicated.

关 键 词：Pc5磁脉动 电离层 离子加热 

分 类 号：P352.7[天文地球—空间物理学]