TY - JOUR

T1 - MODELS OF MAGNETOSPHERIC MAGNETIC-FIELD

AU - TSYGANENKO, NA

PY - 1991

Y1 - 1991

N2 - Configuration of the magnetic field in the near-Earth space is known to be the most important factor determining links between the magnetosphere and ionosphere such as thermal plasma flows, electric field mapping, solar particle trajectories, low-frequency electromagnetic wave and heat propagation. One of methods for constructing the magnetospheric magnetic field models implies using large amounts of spacecraft data which are sorted out in intervals of geomagnetic disturbance indices and/or solar wind characteristics. The obtained datasets are then used for least squares fitting parameters of functions which approximate contributions to the total field coming from the main mangetospheric B sources. This opens a possibility for studying the average dependence of geometry and intensity of the magnetospheric electric current systems on the ground activity level as well as on the solar wind state. Recent progress and future prospects in this area is reviewed and discussed.

AB - Configuration of the magnetic field in the near-Earth space is known to be the most important factor determining links between the magnetosphere and ionosphere such as thermal plasma flows, electric field mapping, solar particle trajectories, low-frequency electromagnetic wave and heat propagation. One of methods for constructing the magnetospheric magnetic field models implies using large amounts of spacecraft data which are sorted out in intervals of geomagnetic disturbance indices and/or solar wind characteristics. The obtained datasets are then used for least squares fitting parameters of functions which approximate contributions to the total field coming from the main mangetospheric B sources. This opens a possibility for studying the average dependence of geometry and intensity of the magnetospheric electric current systems on the ground activity level as well as on the solar wind state. Recent progress and future prospects in this area is reviewed and discussed.

KW - GEOMAGNETIC-FIELD

KW - ALIGNED CURRENTS

KW - BY-COMPONENT

KW - GROWTH-PHASE

KW - RING CURRENT

KW - DIPOLE TILT

KW - MAGNETOTAIL

KW - PLASMA

KW - QUIET

KW - CONFIGURATION

U2 - 10.5636/jgg.43.Supplement1_325

DO - 10.5636/jgg.43.Supplement1_325

M3 - Article

VL - 43

SP - 325

EP - 336

JO - Earth, Planets and Space

JF - Earth, Planets and Space

SN - 1343-8832

T2 - 7TH QUADRENNIAL SOLAR TERRESTRIAL PHYSICS SYMP / 27TH COSPAR MEETING

Y2 - 25 July 1990 through 30 July 1990

ER -