期刊
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
卷 117, 期 -, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2011JA017082
关键词
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资金
- Science and Technology Facilities Council (STFC), UK [ST/H002480/1]
- Belgian National Fund for Scientific Research (FNRS)
- PRODEX of the European Space Agency (ESA)
- STFC [PP/E007929/1, ST/H002480/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H002480/1, PP/E007929/1] Funding Source: researchfish
Many studies have attempted to quantify the coupling of energy from the solar wind into the magnetosphere. In this paper we parameterize the dependence of the magnetopause reconnection rate on interplanetary parameters from the OMNI data set. The reconnection rate is measured as the rate of expansion of the polar cap during periods when the nightside reconnection rate is thought to be low, determined from observations by the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) Far Ultraviolet (FUV) imager. Our fitting suggests that the reconnection rate is determined by the magnetic flux transport in the solar wind across a channel approximately 4 RE in width, with a small correction dependent on the solar wind speed, and a clock angle dependence. The reconnection rate is not found to be significantly dependent on the solar wind density. Comparison of the modeled reconnection rate with SuperDARN measurements of the cross-polar cap potential provides broad support for the magnitude of the predictions. In the course of the paper we discuss the relationship between the dayside reconnection rate and the cross-polar cap potential.
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