Distribution in magnetotail of O(+) ions from cusp/cleft ionosphere - A possible substorm trigger

Details Distribution in magnetotail of O(+) ions from cusp/cleft ionosphere - A possible substorm trigger Distribution in magnetotail of O(+) ions from cusp/cleft ionosphere - A possible substorm trigger

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97..123c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, Jan. 1, 1992, p. 123-130. Research supported by Lockheed Corp.

Physics

44

Cusps, Geomagnetic Tail, Ionospheric Disturbances, Magnetic Storms, Oxygen Ions, Electric Fields, Ion Distribution, Ion Motion, Magnetic Fields, Particle Trajectories

Scientific paper

The transport of O(+) ions from the cusp/cleft ionosphere to the magnetotail during highly disturbed times was determined by computing the guiding-center trajectories of the ions to a distance of 6 R(E) from the ionosphere and the full-motion trajectories at later times. Case histories were tallied in six planes perpendicular to the X(GSM) axis, three planes perpendicular to the Y(GSM) axis, and in the center plane of the tail. At various times relative to the enhancement of the convection electric field, the following ion properties were constructed from the case histories: number density, mean energy, energy and pitch angle distributions of the flux, and ion pressure components parallel and perpendicular to the magnetic field. It was found that, after about 1.7 hours, the ion flux in the near-earth magnetotail increased dramatically and the spectrum hardened, much as observed during periods just preceding substorms. This increase is attributed to (1) the increase in the O(+) outflux from the ionosphere, (2) the increased energization of the ions by the convection electric field, and (3) ion trapping, which generally occurs because the ion magnetic moments generally increase after the ions first cross the geomagnetotail center plane.

Affiliated with

Also associated with

No associations

Rating

Distribution in magnetotail of O(+) ions from cusp/cleft ionosphere - A possible substorm trigger does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Distribution in magnetotail of O(+) ions from cusp/cleft ionosphere - A possible substorm trigger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distribution in magnetotail of O(+) ions from cusp/cleft ionosphere - A possible substorm trigger will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-938201