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Record Details

Record 43 of 20979
Electric field observations of equatorial bubbles
Author and Affiliation:
Aggson, T. L.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Maynard, N. C.(USAF, Geophysics Laboratory, Hanscom AFB, MA, United States)
Hanson, W. B.(University of Texas at Dallas, Richardson, United States)
Saba, Jack L.(ST Systems Corp., Lanham, MD, United States)
Abstract: Results from the double floating probe experiment performed on the San Marco D satellite are presented, with emphasis on the observation of large incremental changes in the convective electric field vector at the boundary of equatorial plasma bubbles. Attention is given to isolated bubble structures in the upper ionospheric F regions; these observed bubble encounters are divided into two types - type I (live bubbles) and type II (dead bubbles). Type I bubbles show varying degrees of plasma depletion and large upward velocities range up to 1000 km/s. The geometry of these bubbles is such that the spacecraft orbit may cut them where they are tilting either eastward or (more often) westward. Type II bubbles exhibit plasma density depletion but no appreciable upward convection. Both types of events are usually surrounded by a halo of plasma turbulence, which can extend considerably beyond the region of plasma depletion.
Publication Date: Mar 01, 1992
Document ID:
19920045467
(Acquired Nov 22, 1995)
Accession Number: 92A28091
Subject Category: GEOPHYSICS
Document Type: Journal Article
Publication Information: Journal of Geophysical Research (ISSN 0148-0227); 97; A3, M
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 13p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: F REGION; PLASMA BUBBLES; PLASMA DENSITY; PLASMA TURBULENCE; SATELLITE OBSERVATION; TAYLOR INSTABILITY; E REGION; EQUATORIAL REGIONS; FIELD ALIGNED CURRENTS; STEADY STATE
Imprint And Other Notes: Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A3, March 1, 1992, p. 2997-3009.
Availability Source: Other Sources
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