Physics
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000angeo..18..202b&link_type=abstract
Annales Geophysicae, vol. 18, Issue 2, pp.202-208
Physics
11
Scientific paper
Using observations with the ALOMAR SOUSY radar near Andenes (69.3°N, 16.0°E) from 1994 until 1997 polar mesosphere summer echoes (PMSE) have been investigated in dependence on geomagnetic K indices derived at the Auroral Observatory Tromsø (69.66°N, 18.94°E). During night-time and morning hours a significant correlation between the signal-to-noise ratio (SNR) of the radar results and the geomagnetic K indices could be detected with a maximum correlation near midnight. The correlation becomes markedly smaller in the afternoon and early evening hours with a minimum near 17 UT. This diurnal variation is in reasonable agreement with riometer absorption at Ivalo (68.55°N, 27.28°E) and can be explained by the diurnal variation of ionization due to precipitating high energetic particles. Therefore, a part of the diurnal PMSE variation is caused by this particle precipitation. The variability of the solar EUV variation, however, has no significant influence on the PMSE during the observation period.
Bremer Jürgen
Hansen Luise Theil
Hoffmann Peter
No associations
LandOfFree
Geomagnetic control of polar mesosphere summer echoes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Geomagnetic control of polar mesosphere summer echoes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geomagnetic control of polar mesosphere summer echoes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1492259