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Interplanetary small- and intermediate-sized magnetic flux ropes during 1995-2005
Feng, H. Q.; Wu, D. J.; Lin, C. C.; Chao, J. K.; Lee, L. C.; Lyu, L. H.; 北京8701信箱
Department其他
Source PublicationJournal of Geophysical Research-Space Physics
2008
Volume113Issue:A2Pages:A12105
ISSN0148-0227
Language英语
KeywordCoronal Mass Ejections Force-free Fields Geomagnetic Storms Solar-wind Constant-alpha Source-region Clouds Voyager Shock
AbstractWe present a comprehensive survey of 125 small- and intermediate-sized interplanetary magnetic flux ropes during solar cycle 23 (1995-2005) using Wind in situ observations near 1 AU. As a result, we found the following: (1) The annual number of small- and intermediate-sized interplanetary magnetic flux ropes is not very sensitive to the solar cycle, but its trend is very similar to that of magnetic clouds (MCs). (2) Average speeds of the individual small- and intermediate-sized interplanetary magnetic flux ropes varied from 289 to 790 km/s with a mean value of 420 +/- 86 km/s. Most small- and intermediate-sized interplanetary magnetic flux ropes were found to have a propagation speed similar to typical slow speed solar wind speed, and only a few small- and intermediate-sized interplanetary magnetic flux ropes had speeds comparable to the typically high speed solar wind. (3) Average magnetic field strength for small- and intermediate-sized interplanetary magnetic flux ropes is less than the average magnetic field strengths of MCs, while it is larger than that of background solar wind. (4) The distributions of the axial orientations for small- and intermediate-sized interplanetary magnetic flux ropes are also similar to that of MCs. The results show that small- and intermediate-sized interplanetary magnetic flux ropes and MCs have many similar (or relative) characters. So we suggest that both MCs and small- and intermediate-sized interplanetary magnetic flux ropes originate from solar eruptions.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1700
Collection其他部室
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Feng, H. Q.,Wu, D. J.,Lin, C. C.,et al. Interplanetary small- and intermediate-sized magnetic flux ropes during 1995-2005[J]. Journal of Geophysical Research-Space Physics,2008,113(A2):A12105.
APA Feng, H. Q..,Wu, D. J..,Lin, C. C..,Chao, J. K..,Lee, L. C..,...&北京8701信箱.(2008).Interplanetary small- and intermediate-sized magnetic flux ropes during 1995-2005.Journal of Geophysical Research-Space Physics,113(A2),A12105.
MLA Feng, H. Q.,et al."Interplanetary small- and intermediate-sized magnetic flux ropes during 1995-2005".Journal of Geophysical Research-Space Physics 113.A2(2008):A12105.
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