The AGWs variability due to geomagnetic activity observed in the middle latitude mesosphere in the Northern hemisphere
Abstract
Temperature observations by the Mesopause Oxygen Rotational Temperature Imager MORTI and Spectral Airglow Temperature Imager SATI data were chosen to study the gravity wave activity due to several geomagnetic storms existed in period of 1999 2000 2004 2005 over Almaty 43 05 r N 76 97 r E Sierra Nevada 37 2 r N 356 7 r E and Delaware 42 87 N 278 62 E The response of the mesosphere to geomagnetic storms associated with coronal hole CH and coronal mass ejection CME is investigated and discussed The spectral region response to harmonic oscillations with periods from 50 min to 7 hours is examined in term of Krassovky s ratio The results of the current investigation have shown that the spectral parameters of the wave disturbances generated in the middle atmosphere may be sufficiently altered under the influence of the magnetic storm The results from the analysis of the vertical waves propagation for the periods considered are also discussed
- Publication:
-
36th COSPAR Scientific Assembly
- Pub Date:
- 2006
- Bibcode:
- 2006cosp...36.1949A