Combining multi-point spacecraft and two-dimensional ground-based observations: Theory and example of an IMF B-Y-related cusp current system

O Amm*, K Kauristie, TI Pulkkinen, MJ Engebretson, RA Greenwald, H Luhr, T Moretto

*Corresponding author for this work

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

Abstract

Ground-based support is crucial even for a multi-spacecraft mission in the magnetosphere to obtain information on the medium and global scale plasma environment the satellites are located in. Such support can be provided by networks of magnetometers, radars, all-sky cameras, and other ground-based instruments. We give an overview of methods for obtaining two-dimensional, instantaneous distributions of macroscopic ionospheric electrodynamic parameters, starting from different measured input data sets of both satellite and ground-based data. Detailed explanation is given for the method of characteristics which uses ground magnetometer and coherent scatter radar data as an input, and for the newly developed "elementary current method" that can be used if the field-aligned current (FAC) distribution mapped to the ionosphere has additionally been masured by satellites. An application example for the method of characteristics is given for which the detailed FAC configuration of an IMF B-Y-related cusp current system is derived.

Original languageEnglish
Title of host publicationCLUSTER-II WORKSHOP MULTISCALE/MULTIPOINT PLASMA MEASUREMENTS, PROCEEDINGS
EditorsRA Harris
PublisherEuropean Space Agency
Pages327-330
Number of pages4
ISBN (Print)92-9092-796-8
Publication statusPublished - 2000
MoE publication typeA4 Article in a conference publication
EventCLUSTER-II Workshop on Multiscale/Multipoint Plasma Measurements - London, United Kingdom
Duration: 22 Sep 199924 Sep 1999

Publication series

NameESA SPECIAL PUBLICATIONS
PublisherEUROPEAN SPACE AGENCY
Volume449
ISSN (Print)0379-6566

Workshop

WorkshopCLUSTER-II Workshop on Multiscale/Multipoint Plasma Measurements
CountryUnited Kingdom
CityLondon
Period22/09/199924/09/1999

Keywords

  • IONOSPHERIC ELECTRIC-FIELDS
  • ALIGNED CURRENTS
  • MAGNETOMETER ARRAY
  • HALL

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