Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa21c..03t&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SA21C-03
Physics
0358 Thermosphere: Energy Deposition, 0394 Instruments And Techniques, 2407 Auroral Ionosphere (2704), 2409 Current Systems (2708), 2437 Ionospheric Dynamics
Scientific paper
The high latitude region between 90 and 150 km is significantly structured in many of the state parameters that describe the thermosphere and ionosphere, such as neutral winds, ion motion, ion temperature, electron temperature, electron density, neutral density and neutral temperature. Each state parameter responds differently to the various processes at play in the polar regions. These state parameters combine to establish the electrodynamic properties of the E-region, such as currents, conductivities and the electric field in the rest frame of the neutral gas. These structured electrodynamic parameters have an important impact on the amount of energy exchange that takes place between the magnetosphere and ionosphere, and on how the ionosphere and thermosphere responds. In this talk, comprehensive measurements provided by the incoherent scatter radar technique will be used to investigate the observed vertical structure in the high-latitude E-region state properties and the electrodynamics. The height structure in the Joule heating rate and related energy dissipation properties will also be presented and the influence of neutral winds will be elucidated. In addition, deployment plans for the new Advanced Modular Incoherent Scatter Radar (AMISR) in Poker Flat, Alaska and Resolute Bay, Canada will be discussed.
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