The latitudinal, diurnal, and altitudinal distributions of upward flowing energetic ions of ionospheric origin

Details The latitudinal, diurnal, and altitudinal distributions of upward flowing energetic ions of ionospheric origin The latitudinal, diurnal, and altitudinal distributions of upward flowing energetic ions of ionospheric origin

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5...59g&link_type=abstract

Geophysical Research Letters, vol. 5, Jan. 1978, p. 59-62. Research supported by the Swiss National Science Foundation, Lockhee

Computer Science

Sound

43

Diurnal Variations, Ionospheric Ion Density, Satellite Observation, Spatial Distribution, Vertical Distribution, Auroral Zones, Hydrogen Ions, Ionospheric Sounding, Mass Spectroscopy, Oxygen Ions, Polar Regions, Statistical Analysis

Scientific paper

A statistical survey of mass spectrometer data from the S3-3 satellite has revealed the existence of an oval-shaped region in the polar ionosphere where upward acceleration of ionospheric H(+), O(+) and occasionally He(+) ions is occurring. The shape and location of this region are in good correlation with the statistical auroral oval. Upward flowing ion events with flux above 2 x 10 to the 6th keV/(sq cm sec ster keV) are observed in more than 60% of the 370 orbits examined. A strong dawn-dusk asymmetry is found in the frequency of occurrence with the maximum in the dusk sector. The probability of observation increases with height up to apogee (8000 km) indicating that the main energization takes place preferentially at heights above about 1 R-E.

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