Relationship between the low-latitude coronal hole area, solar wind velocity, and geomagnetic activity during solar cycles 23 and 24 View Full Text


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Article Info

DATE

2019-12

AUTHORS

Yumi Nakagawa, Satoshi Nozawa, Atsuki Shinbori

ABSTRACT

In order to statistically investigate the relationship between the low-latitude coronal holes (CHs), the solar wind speed, and the geomagnetic activity in solar cycles 23 (1996–2008) and 24 (2009–2016), we conducted a superposed epoch analysis of the variations in CH area, solar winds, the interplanetary magnetic field (IMF), and geomagnetic indices (AL, AU, and SYM-H) for the period from 1996 to 2016. We further divided the temporal variations of the IMF into four types and then investigated the variations in solar winds, the IMF, and the geomagnetic indices before and after the corotating interaction region (CIR) reached Earth’s magnetosphere in each case. As a result, we observed a north–south asymmetry in the CH area, which shows that the CH area was much larger in the southern hemisphere than in the northern hemisphere during solar cycles 23 and 24. In addition, the CH area for solar cycle 24 tended to appear in a wider latitude region compared with that for solar cycle 23. The maximum values of the CH area and the solar wind speed in solar cycle 24 tended to be smaller than those in solar cycle 23. The relationship between these maximum values showed a positive correlation for both solar cycles. The distribution was larger for solar cycle 23 than for solar cycle 24. The variations in solar wind speed and the geomagnetic indices (AE and SYM-H) associated with CIRs in solar cycle 24 tended to be smaller than those in solar cycle 23. We conclude that the geomagnetic activity for solar cycle 24 associated with CIRs was slightly lower compared with that for solar cycle 23. This decrease in geomagnetic activity was due to a decrease in the dawn-to-dusk solar wind electric field intensity, which is obtained as the product of the solar wind speed and the north–south component of the solar wind magnetic field. More... »

PAGES

24

References to SciGraph publications

  • 2009-12. Coronal Holes in LIVING REVIEWS IN SOLAR PHYSICS
  • 1978-09. Coronal holes, solar wind streams, and geomagnetic activity during the new sunspot cycle in SOLAR PHYSICS
  • 2012-12. Relation Between Coronal Hole Areas on the Sun and the Solar Wind Parameters at 1 AU in SOLAR PHYSICS
  • 2006-12. Space Weather: The Solar Perspective in LIVING REVIEWS IN SOLAR PHYSICS
  • 1981-04. Coronal holes, solar wind streams, and geomagnetic disturbances during 1978 and 1979 in SOLAR PHYSICS
  • 2015-12. Short-term variability of the Sun-Earth system: an overview of progress made during the CAWSES-II period in PROGRESS IN EARTH AND PLANETARY SCIENCE
  • 2015-12. The solar magnetic activity band interaction and instabilities that shape quasi-periodic variability in NATURE COMMUNICATIONS
  • 2006-12. Properties of Stream Interactions at One AU During 1995 – 2004 in SOLAR PHYSICS
  • 2014-06. Reversals of the Sun’s Polar Magnetic Fields in Relation to Activity Complexes and Coronal Holes in SOLAR PHYSICS
  • 2011-12. Comparing Solar Minimum 23/24 with Historical Solar Wind Records at 1 AU in SOLAR PHYSICS
  • 2002-12. Polar Coronal Holes During Cycles 22 and 23 in SOLAR PHYSICS
  • 2017-03. Relation Between Coronal Hole Areas and Solar Wind Speeds Derived from Interplanetary Scintillation Measurements in SOLAR PHYSICS
  • 2007-02. Coronal Holes and Solar Wind High-Speed Streams: I. Forecasting the Solar Wind Parameters in SOLAR PHYSICS
  • 2014-02. Forecasting the Maxima of Solar Cycle 24 with Coronal Fe xiv Emission in SOLAR PHYSICS
  • 2012-01. The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) in SOLAR PHYSICS
  • 1995-12. EIT: Extreme-ultraviolet Imaging Telescope for the SOHO mission in SOLAR PHYSICS
  • 2017-12. Geomagnetic storms of cycle 24 and their solar sources in EARTH, PLANETS AND SPACE
  • 2015-05. Real-Time Solar Wind Prediction Based on SDO/AIA Coronal Hole Data in SOLAR PHYSICS
  • 2017-01. Coronal Holes and Open Magnetic Flux over Cycles 23 and 24 in SOLAR PHYSICS
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    http://scigraph.springernature.com/pub.10.1186/s40623-019-1005-y

    DOI

    http://dx.doi.org/10.1186/s40623-019-1005-y

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