Computer Science – Sound
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3281t&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 20, p. 3281-3284
Computer Science
Sound
7
Ionosphere: Electric Fields, Ionosphere: Ionospheric Irregularities, Ionosphere: Midlatitude Ionosphere, Ionosphere: Plasma Waves And Instabilities
Scientific paper
We have reexamined data collected during the flight of the SEEK S310-25 sounding rocket, together with a second set of radar measurements, to determine whether a more consistent interpretation could be derived, if we allowed for the possibility that sporadic E (Es) was configured as a sequence of elongated strips in the form of a frontal structure. We show that the features found in the plasma density, electric field (E) and the so-called quasi-periodic (QP) echoes are consistent with a polarization process acting on the Es strips that is driven by a Hall and not a Pedersen current. Specifically, we show that three large E spikes, measured in situ, appeared at intervals of ground distance that were nearly identical to those of the QP echoes. The vector relationship between the spikes and the background E was also consistent with this type of polarization process. We also briefly discuss a counterclockwise rotation of E, which could be related with a process responsible for the existence of frontal structures.
Fukao Shoichiro
Mori Hirotaka
Tsunoda Roland T.
Yamamoto Mamoru
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