空间科学学报2017，Vol.37Issue(3)：270-276,7.DOI:10.11728/cjss2017.03.270
一种基于白谱法的电离层天气扰动指数
Ionospheric Weather Disturbance Indices Based on Spectral Whitening
摘要
Abstract
A Spectral Whitening Method (SWM) is introduced and applied in the study of ionospheric weather disturbances to calculate Js,Jr and Jp indices on the basis of Total Electron Content (TEC) data provided by IGS.These indices can reflect the disturbances of ionospheric weather of single station,latitude circle (integral along longitude) and the whole planet separately.During a geomagnetic storm in March 2015,all three indices well reflect the ionospheric disturbances.The correlation coefficient between Jp and Dst indices reaches-0.72,and the 2D images of ionospheric disturbances can be well captured by Js map.The correlation coefficient between Jp index and Dst index,from 2011 to 2014,reaches-0.67 if Jp is greater than or equal to 2,and the correlation coefficient can reach-0.87 if Jp is greater than or equal to 3.By analyzing the frequencies of different levels of geomagnetic storms under different threshold values of Jp index,the results suggest that Jp index,as a possible characterization parameter of ionospheric weather condition,can well reflect planetary ionospheric disturbances during geomagnetic storms.关键词
电离层扰动/磁暴/白谱法/TECKey words
Ionospheric disturbance/Geomagnetic storm/SWM/TEC分类
天文与地球科学引用本文复制引用
赵瑜馨,毛田,陈洲,王劲松..一种基于白谱法的电离层天气扰动指数[J].空间科学学报,2017,37(3):270-276,7.基金项目
国家高技术研究发展计划项目(2014AA123503)和国家自然科学重点基金项目(40931056,41404136)共同资助 （2014AA123503）
