Physics
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31..253r&link_type=abstract
Planetary and Space Science, vol. 31, Feb. 1983, p. 253-264.
Physics
16
Ionospheric Drift, Ionospheric Electron Density, Metal Ions, Midlatitude Atmosphere, Sporadic E Layer, Atmospheric Tides, Drift Rate, Gravity Waves, Incoherent Scatter Radar, Ionospheric Ion Density
Scientific paper
An investigation of the relationship between the occurrence of midlatitude sporadic-E-layers and convergent points in the ion drift profiles has been made using the 430 MHz incoherent scatter radar at the Arecibo Observatory. Electron concentration profiles were obtained using a 13 baud Barker coded pulse yielding 600 m range resolution, while a 5-pulse sequence with 2.4 km range resolution was used to obtain line-of-sight ion drift velocities. With some exceptions, observed sporadic-E layers occur near convergent points in the vertical metallic ion drift profile, and vertical motions of these layers follow the vertical motions of the convergent point. A sudden increase in the altitude of a sporadic-E layer has been observed. This is attributed to the disappearance of the convergent point, releasing the layer, followed by an ascent of the layer to the closest overlying convergent point.
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