Volume 34 Issue 1
Jan.  2014
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Song Dan, Xue Bingsen, Cheng Guosheng. Statistical analysis of solar wind velocity from ACE and STEREO-B satellites[J]. Chinese Journal of Space Science, 2014, 34(1): 1-10. doi: 10.11728/cjss2014.01.001
Citation: Song Dan, Xue Bingsen, Cheng Guosheng. Statistical analysis of solar wind velocity from ACE and STEREO-B satellites[J]. Chinese Journal of Space Science, 2014, 34(1): 1-10. doi: 10.11728/cjss2014.01.001

Statistical analysis of solar wind velocity from ACE and STEREO-B satellites

doi: 10.11728/cjss2014.01.001
  • Received Date: 2013-01-15
  • Rev Recd Date: 2013-07-24
  • Publish Date: 2014-01-15
  • The wavelet analysis method was used to discuss the 27-day periodicities characteristic of the solar wind speed detected by ACE and STEREO-B satellites from the year of 2008 to 2011. Using the method of unary linear regression, the linear equation of solar wind speed is calculated. From the analysis and calculation results detected by ACE and STEREO-B, it is shown that the solar wind speed in 8~16d and 16~32d frequency domain is significant. The solar wind speed detected by the two satellites presents significant 27-day periodicities in parts of the same frequency domain. And it presents better correlation in the year when solar activity is low. As an application example, solar wind data detected by STEREO-B is applied to predict the solar wind speed of ACE from 1 to 17 in October, 2012. The results show that the trend of predicted values and measured values are consistent, although the CME has a certain influence on the predicted values. Through this research, the relationship of solar wind speed detected by ACE and STEREO-B satellites was preliminarily studied, and the solar wind speed was detected by STEREO-B a few days before it came to the Earth. This work laid the foundation to establish the medium-term forecast models for the non-recurrent geomagnetic storms.

     

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