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Northward turning. Bz < 0. small storm. (-6.8, 10) RE. Geotail flow (-18.7, -2.3). Quasi-periodic fronts/injections. LANL-97a. LANL-02a. GOES 11. GOES 13. GOES 12. LANL 94. GOES 10. Some Conclusions. THEMIS sees quasi-periodic magnetic oscillations, associated with oscillatory flow
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Northward turning Bz < 0 small storm
Geotail flow (-18.7, -2.3)
Quasi-periodic fronts/injections LANL-97a LANL-02a GOES 11 GOES 13 GOES 12 LANL 94 GOES 10
Some Conclusions • THEMIS sees quasi-periodic magnetic oscillations, associated with oscillatory flow • Low-latitude, flank Pi2 at 0910, 0918, 0928 and 0938 UT associated with auroral intensifications and LANL dispersionless injections at dawn flank. • Some disagreement with timing; awaiting digital 210 data. • Event possibly started with a brief northward turning of the IMF. • Did this cause a quasi-periodic instability to develop in the tail? • Final intensification (substorm) occurred further west, towards midnight, and penetrated to GOES-11
fykn Pi2 at 0910, 0918, 0928, 0938 Each Pi2 associated with auroral activation kian gako
Dawn midnight pre-noon post-noon post-dusk
Dawn midnight pre-noon post-noon post-dusk
Kakioka Pi2 Note Pi2 power over north america