HR: 0800h
AN: SM31A-0381    [Abstracts]
TI: On the need for a solar wind trigger
AU: * Freeman, M P
EM: mpf@bas.ac.uk
AF: British Antarctic Survey, High Cross Madingley Road, Cambridge, CB3 0ET United Kingdom
AU: Morley, S K
EM: Steven.Morley@newcastle.edu.au
AF: CRC for Satellite Systems, University of Newcastle, Callaghan, NSW 2308 Australia
AB: We re-evaluate the likelihood of solar wind triggers being associated with substorm onsets by chance. We argue theoretically that the likelihood is not as small as previous authors have argued, and support this by analysing the recurrence times between objectively-defined solar wind triggers. Using a mathematical model of substorm occurrence, we demonstrate that the effect of including or excluding substorm triggering has a negligible effect on substorm occurrence time. Hence substorm triggering is not a necessary requirement to explain substorm occurrence.
DE: 2790 Substorms
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005