VHF scintillations and plasma drifts observed in southern Taiwan during the declining phase of solar cycle 24

  • Multi-temporal variations of VHF scintillations investigated at EIA latitude
  • Strong/weak scintillations have different local-time dependences
  • Dayside plasma drifts are prominently westward and nightside drifts are eastward
Abstract
4 indices, occurrences and east-west drifts are investigated with respect to local time, season, and solar activity. The results show that strong scintillations (S4 > 0.5) appear frequently at early nighttime at equinoxes during the high solar activity year of 2015, while weak scintillations (S4: 0.2 - 0.5) occur often at early daytime and more frequently at early nighttime in summer without obvious correlation with solar activity levels. The peak drift of ~50 - 60 m s-1 is observed eastward at night and westward during the day. Stronger scintillations and higher drift velocities are observed in spring and fall.

Read 1754 times
Published in: Space Science
Tagged under:
Download paper:
back to top
Articles
Special Issue
Awards
Submission
About
© 1990-2033 Terrestrial, Atmospheric and Oceanic Sciences (TAO). All rights reserved.

Published by The Chinese Geoscience Union