Other
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm11c0453w&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM11C-0453
Other
2724 Magnetopause, Cusp, And Boundary Layers, 2776 Polar Cap Phenomena, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
Two Automatic Geomagnetic Observatory stations, AGOs P5 and P6, were purposely established on opposite sides of the nominal geomagnetic dipole on the Antarctic polar cap in order to compare magnetospheric phenomena during local day and local night conditions over relatively small spatial scales deep in the geomagnetic polar regions. While simulataneous data from all AGOs are often not available due to power problems at the sites, sufficient data from some time intervals exist to make comparisons as a function of local time during these intervals. Ten-minute power spectra of geomagnetic field Z-Component data have been calculated for the three AGOs P1 (80.14°S; 16.75°E CGM), P5 (86.73°S, 29.39°E CGM), and P6 (84.92°S, 215.32°E CGM). The time series of the spectral power values at .01 Hz (100s period) and .005 Hz (200s period) are compared at each of the stations for 15-day intervals during austral spring in 1998 and 1999. A 24-hour variation appears in each of the four power level time series at each station. This frequency, as well as some harmonics, is also found in spectra of the time series of the power levels. There is a tendency for the 24-hour variations to be out of phase on opposite sides of the nominal geomagnetic pole: that is, P1 and P5 tend to be in phase with each other, but out of phase with P6. However there are instances when the phase relationships break down, indicating a more complex geomagnetic situation in the deepest polar cap. These and other findings will be discussed.
Lanzerotti Louis J.
Maclennan Carol G.
Waldstein M.
No associations
LandOfFree
Studies of ULF Power at Pc4 and Pc5 Frequencies at the Highest Geomagnetic Latitudes 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 Studies of ULF Power at Pc4 and Pc5 Frequencies at the Highest Geomagnetic Latitudes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studies of ULF Power at Pc4 and Pc5 Frequencies at the Highest Geomagnetic Latitudes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1438189