Dayside magnetopause erosion on geostationary orbit using WIND and GOES data (1996-1999)

Stefan Muehlbachler; Charles J. Farrugia; Helfried K. Biernat; Vladimir S. Semenov; Nikolai V. Erkaev; Roy B. Torbert; Dieter F. Vogl; Daniel Langmayr

doi:10.1117/12.458485

28 February 2002 Dayside magnetopause erosion on geostationary orbit using WIND and GOES data (1996-1999)

Stefan Muehlbachler, Charles J. Farrugia, Helfried K. Biernat, Vladimir S. Semenov, Nikolai V. Erkaev, Roy B. Torbert, Dieter F. Vogl, Daniel Langmayr

Author Affiliations +

Proceedings Volume 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; (2002) https://doi.org/10.1117/12.458485
Event: Eighth Joint International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2001, Irkutsk, Russian Federation

Abstract

During periods of southward interplanetary field and basically constant dynamic pressure, the magnetopause can move earthward due to the so-called phenomenon of magnetopause erosion. In this study, we present several erosion events monitored at geostationary orbit by the GOES spacecrafts underlying WIND measurements in the solar wind. We selected a number of events using 4 years of WIND observations (1996-1999). Specific selection criteria are based on obtaining a progressively decreasing IMF B_z negative, to have various levels of erosion, with and without dynamic pressure changes and of different durations in time. To figure out the erosion effect on geostationary orbit, we have to compare the measured depression in the geostationary magnetic field strength with the magnetic field strength on the well known May 11, 1999, the day the solar wind almost disappeared.

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Stefan Muehlbachler, Charles J. Farrugia, Helfried K. Biernat, Vladimir S. Semenov, Nikolai V. Erkaev, Roy B. Torbert, Dieter F. Vogl, and Daniel Langmayr "Dayside magnetopause erosion on geostationary orbit using WIND and GOES data (1996-1999)", Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); https://doi.org/10.1117/12.458485

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