Electron Density Distribution Over the Northern Polar Cap Deduced From IMAGE/RPI Sounding

Details Electron Density Distribution Over the Northern Polar Cap Deduced From IMAGE/RPI Sounding Electron Density Distribution Over the Northern Polar Cap Deduced From IMAGE/RPI Sounding

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm11a0783n&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM11A-0783

Computer Science

Sound

2768 Plasmasphere, 2794 Instruments And Techniques

Scientific paper

The plasma density distribution along the open field lines over the polar cap is difficult to assess with in-situ measurements because it is rare to have a few satellites along the same field line. It is also challenging to derive it from theory because the existence of constant upward or downward flow makes a static approximation invalid. The radio plasma imager \(RPI\) echo soundings together with the new profile inversion routines provide a direct method of obtaining this distribution. We have analyzed IMAGE polar cap passes from June to September 2000 measuring a 10\-minute sequence of electron density profiles up to ~5RE. We present the densities in the SM coordinate system for magnetic co\-latitudes <30o. The possible dependence of these distributions on the solar wind conditions and their relation with the Kp index will be discussed.

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