A statistical study of flux transfer event signatures in the dayside aurora: The IMF B{sub y}-related prenoon-postnoon asymmetry

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Journal of Geophysical Research

DOI:https://doi.org/10.1029/95JA02590· OSTI ID:254430

Karlson, K A; Oieroset, M ^[1]; Moen, J ^[2]

---

1. Univ. of Oslo (Norway)
2. Univ. Courses on Svalbard, Longyearbyen (Norway); and others

The authors report results of a limited study of flux transfer event signatures in the dayside auroral region. These events are considered one of four major classes of events which are related to the transport of particles, momentum, and energy from the solar wind to the magnetosphere/ionosphere system. For this study, the authors assume that the prenoon/postnoon asymmetry in the y component of the interplanetary magnetic field is indicative of magnetic merging phenomena. They then restrict themselves to looking for events where B{sub z} < 0, sort on B{sub y}, look in the time interval 1000 to 1400 magnetic local time, and look at cusp/cleft optical auroral activities. They then do a statistical study of the events which they find. They find that the distribution of events they observe is consistent with a reconnection model, and therefore such auroal disturbances can be interpreted as related to flux transfer events.

• OSTI ID: 254430
• Journal Information: Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: A1 Vol. 101; ISSN JGREA2; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AURORAE
COUPLING
EARTH MAGNETOSPHERE
FLUCTUATIONS
INTERPLANETARY MAGNETIC FIELDS
IONOSPHERE
MAGNETIC FLUX
MAGNETIC RECONNECTION
SOLAR WIND