Dynamics of small- and large-scale irregularities at sub-auroral latitudes. Final report, 1 May 1985-31 August 1987

Technical Report · Sat Oct 10 00:00:00 EDT 1987

OSTI ID:7059087

Aarons, J; Mendillo, M

In order to study the dynamics of ionospheric F-layer irregularities at latitudes below the auroral oval, radio, optical, and incoherent-scatter observations were initiated primarily in the region of 75/sup 0/W longitude. In addition, earlier observations including in-situ satellite measurements were used. The principal conclusions were: (1) the sub-auroral ionospheric observations could be understood by correlating F-layer irregularities with ring-current intensities as measured by Dst, the magnetic field measurement made near the magnetic equator; and sub-auroral irregularities that affect HF communications and over-the-horizon observations last over several nights while the ring current recovers from an injection of ions during a magnetic storm; and (2) local observations of Stable Auroral Red (SAR) Arcs and by Millstone Hill incoherent scatter data reveal that the weaker SAR Arcs detected are important in determining the physics of the generation of these emissions.

• Research Organization: Boston Univ., MA (USA). Dept. of Astronomy
• OSTI ID: 7059087
• Report Number(s): AD-A-189052/4/XAB
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AURORAL OVAL
INCOHERENT SCATTERING
F REGION
RING CURRENTS
INJECTION
IONOSPHERE
IONS
MAGNETIC FIELDS
MAGNETIC STORMS
PROGRESS REPORT
RINGS
SCATTERING
STABILITY
CHARGED PARTICLES
CURRENTS
DOCUMENT TYPES
EARTH ATMOSPHERE
ELECTRIC CURRENTS
INTAKE
PLANETARY IONOSPHERES
640201* - Atmospheric Physics- Auroral
Ionospheric
& Magetospheric Phenomena