High-resolution Ion Drift Measurements from the JOULE Sounding Rocket Mission.

Details High-resolution Ion Drift Measurements from the JOULE Sounding Rocket Mission. High-resolution Ion Drift Measurements from the JOULE Sounding Rocket Mission.

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa41a1033s&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA41A-1033

Computer Science

Sound

2403 Active Experiments, 2407 Auroral Ionosphere (2704), 2409 Current Systems (2708), 2427 Ionosphere/Atmosphere Interactions (0335)

Scientific paper

The JOULE sounding rocket mission was designed to investigate structured Joule dissipation in the auroral ionosphere. JOULE was launched March 27, 2003 from Poker Flat, Alaska, into an active substorm. The mission included two instrumented rockets and two chemical release (TMA) rockets in addition to ground-based diagnostics. One of the instrumented payloads carried a Suprathermal Ion Imager (SII) that measured 2-D (energy/angle) distributions of the core (0-8 eV) ion population at a rate of 125 images per second. In this presentation we compare bulk ion drifts derived from the SII with those inferred from DC electric fields. From differences in these two parameters we calculate the local Joule heating rate at a spatial resolution of 8 m.

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