Correlations of AKR index with Kp and Dst indices

Authors :: Takeshi, Murata
Hiroshi, Matsumoto
Hirotsugu , Kojima
Toshihiko, Iyemori
Ehime University/Radio Atmospheric Science Center, Kyoto University/Radio Atmospheric Science Center, Kyoto University/Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University
Source :: Proceedings of the NIPR Symposium on Upper Atmosphere Physics. 10:64-68
Publication Year :: 1997
Publisher :: National Institute of Polar Research, 1997.
Abstract: After initial observations of Auroral Kilometric Radiation (AKR), their associations with substorms had been intensively investigated during 1970's. Herein we extend these studies and propose a new index available for substorm studies, named the AKR index. We define the AKR index by the power flux of AKR normalized to a reference distance from the Earth. The AKR index is found to show good correlations with Kp and Dst indices for weak magnetic disturbances. The AKR index tends to saturate for moderate and severe disturbance.