Saturation of polar cap potential by intense solar wind electric fields
نویسندگان
چکیده
منابع مشابه
Saturation of polar cap potential by intense solar wind electric fields
[1] We have examined the statistical relationship between solar wind parameters and the polar cap potential ( PC) using data from the Wind and ACE satellites and the northern polar cap index (PCN) as a proxy for PC. We found that PCN tended to be saturated when the value of the merging electric field (Em) was high (greater than 5 mV/m). Furthermore, it was found that the degree of saturation do...
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[1] The most important source of electrodynamic disturbances in the equatorial ionosphere during the main phase of a storm is the prompt penetration electric field (PPEF) originating from the high-latitude region. It has been known that such an electric field is correlated with the magnetospheric convection or interplanetary electric field. Here we show a unique case, in which the electric fiel...
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[1] The polar cap index (PCI) has been shown to be quite useful as an index of the electrodynamic processes within the high-latitude ionosphere. Here we use between 150 and 180 magnetometers to model the high-latitude electrodynamics with the assimilative mapping of ionospheric electrodynamics (AMIE) technique for all of 1997–2001. We compare AMIE calculations of the cross polar cap potential (...
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The polar cap potential ðFPCÞ has long been considered an indicator for the amount of energy flowing into and through the magnetosphere–ionosphere (M–I) system. Studies have shown that FPC reaches an upper limit, or saturates, during geomagnetic storms where the solar wind electric field becomes increasingly large. Numerous observational, theoretical, and modeling studies of FPC have seemingly ...
متن کاملSolar Wind Electric Fields in the Ion Cyclotron Frequency Range
In earlier papers (Kellogg and Lin 1997, Kellogg 2000, Kellogg et al 2001) which attempted to understand what effects were responsible for the violation of the conservation of magnetic moment in the solar wind it was pointed out that electric fields in the range which would resonate with the ion cyclotron frequency have not been adequately investigated. In most spinning spacecraft, fields in th...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2002
ISSN: 0094-8276
DOI: 10.1029/2001gl014202