THE ANGULAR-DISTRIBUTION OF AURORAL KILOMETRIC RADIATION OBSERVED BY THE GEOTAIL SPACECRAFT

Authors
KASABA Y MATSUMOTO H HASHIMOTO K ANDERSON RR
Citation
Y. Kasaba et al., THE ANGULAR-DISTRIBUTION OF AURORAL KILOMETRIC RADIATION OBSERVED BY THE GEOTAIL SPACECRAFT, Geophysical research letters, 24(20), 1997, pp. 2483-2486
Citations number
18
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
24
Issue
20
Year of publication
1997
Pages
2483 - 2486
Database
ISI
SICI code
0094-8276(1997)24:20<2483:TAOAKR>2.0.ZU;2-1
Abstract
We examine the angular distribution of auroral kilometric radiation (A KR) based on a 38-month data set of GEOTAIL plasma wave observations. We show that the AKR illumination pattern becomes narrower with increa sing frequency above 300 kHz. The difference is more evident in the du skside zone and when geomagnetic conditions become more disturbed. We also show that AKR is more active on the winter hemisphere especially for the higher frequency range.