Ionospheric Heating in Aurora: Observations

Details Ionospheric Heating in Aurora: Observations Ionospheric Heating in Aurora: Observations

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa13b..06l&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA13B-06

Physics

2407 Auroral Ionosphere (2704), 2704 Auroral Phenomena (2407), 0310 Airglow And Aurora

Scientific paper

Small scale aurora has brightness structures with a horizontal scale length of less than 1~km. Currents and electric fields have variations on the same scale, but observations on this scale length are difficult and few observations exist. Using averaged quantities from observation with less resolution for the determination of Joule heating leads to underestimates of the heating rates. We will present case studies of different observations of small scale aurora, including ground based optical images and spectroscopic measurements, FAST particle and current data, SuperDARN, and data from ground based wind and temperature imagers.

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