Testing a new approach for event-oriented magnetospheric modelling

MV Kubyshkina*, VA Sergeev, T.I. Pulkkinen, MV Malkov

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

Accurate mapping along magnetic field lines using magnetic field models is a crucial problem in all multi-spacecraft or satellite-ground comparison studies. We show test results of a new approach which allows the use of both high-altitude magnetic field and low-altitude particle boundary measurements as input data. This method, being a combination of the traditional approach and novel remote sounding method (Isotropic Boundary Algorithm), utilizes the modified T89 model functions to describe the external field and can significantly improve the constrain of the free model parameters in event studies. Using this new approach, we modelled the magnetospheric configuration for a number of substorm growth phase events and a few steady convection events using either magnetospheric data or energetic particle data. We found that both approaches usually result in similar parameters of magnetospheric models in the domain covered by observations if the utilized data set is sufficiently large. We also discuss the inferred characteristics of the tail current during these events in light of the substorm triggering problem.

Original languageEnglish
Title of host publicationPROBLEMS OF GEOSPACE
EditorsMI Pudovkin, BP Besser, W Riedler, AM Lyatskaya
Pages207-213
Number of pages7
Publication statusPublished - 1997
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Problems of Geocosmos - PETRODVORETS
Duration: 17 Jun 199623 Jun 1996

Conference

ConferenceInternational Conference on Problems of Geocosmos
CityPETRODVORETS
Period17/06/199623/06/1996

Keywords

  • MAGNETIC-FIELD
  • CURRENT SHEET
  • GROWTH-PHASE
  • TAIL
  • CONFIGURATION

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