Interhemispheric Comparison of Dipole Tilt Angle Effects on Latitude of Mid-Altitude Cusp

GUO Jian-Guang; SHI Jian-Kui; ZHANG Tie-Long; LIU Zhen-Xing

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Interhemispheric Comparison of Dipole Tilt Angle Effects on Latitude of Mid-Altitude Cusp

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A statistical study of interhemispheric comparison of dipole tilt angle effect on the latitude of the mid-altitude cusp is preformed by a data set of the Cluster cusp crossings over a 5-year period.The result shows that the dipole tilt angle has a clear control of the cusp latitudinal location.When the dipole tilts sunwards,the cusp is shifted poleward.The northern cusp moves 1° ILAT for every 15.4° increase in the dipole tilt angle,while the southern cusp moves 1° ILAT for every 20.8° increase in the dipole tilt angle. This suggests that an interhemispheric difference appears in the dependence of cusp latitudinal location on the dipole tilt angle.

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《中国物理快报：英文版》 |2008年第5期|1916-1918|共3页
作者
GUO Jian-Guang; SHI Jian-Kui; ZHANG Tie-Long; LIU Zhen-Xing;
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作者单位

State Key Laboratory of Space Weather,Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100080;

Graduate University of Chinese Academy of Sciences,Beijing 100049;

State Key Laboratory of Space Weather,Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100080;

Space Research Institute,Austrian Academy of Sciences,Graz,Austria;

State Key Laboratory of Space Weather,Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100080;

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正文语种 chi
中图分类物理学;
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Interhemispheric Comparison of Dipole Tilt Angle Effects on Latitude of Mid-Altitude Cusp

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