Simultaneous HF-radar and DMSP observations of the cusp

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/GL017i011p01869· OSTI ID:5391969

Baker, K B; Greenwald, R A; Ruohoniemi, J M; Dudeney, J R; Pinnock, M; Newell, P T; Greenspan, M E; Meng, C I

The Geospace Environment Modeling (GEM) Program is directed toward modeling the coupled solar wind/magnetosphere/ionosphere system. The inter-calibration of ground-based observations of the ionosphere and satellite observations has been identified as an essential step in tying together the data to produce a global picture of geospace. On October 10, 1988 the DMSP-F9 satellite passed through the southern hemisphere cusp while a coherent scatter HF-radar was observing 10-m scale irregularities present in the ionosphere. The combined data indicate that these irregularities were being generated in the cusp, and that the cusp was a region of greater than normal electric field turbulence. The radar data indicate that the cusp was co-located with the region where the ionospheric convection rotated from sunward to anti-sunward with increasing latitude. These observations provide an unambiguous case where simultaneous satellite and ground-based observations of the cusp can be compared.

• OSTI ID: 5391969
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 17:11; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALIBRATION
COMPARATIVE EVALUATIONS
CONVECTION
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
EARTH PLANET
ELECTRIC FIELDS
ELECTRON DENSITY
ENERGY TRANSFER
GROUND LEVEL
HEAT TRANSFER
INTERACTIONS
INTERPLANETARY MAGNETIC FIELDS
IONOSPHERE
LEVELS
MAGNETIC FIELDS
MAGNETOPAUSE
MAGNETOSHEATH
MASS TRANSFER
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
PLANETARY IONOSPHERES
PLANETS
POLAR CUSP
RADAR
RANGE FINDERS
SATELLITES
SOLAR ACTIVITY
SOLAR WIND
SOUTHERN HEMISPHERE
TURBULENCE