Polar cap index comparisons with AMIE cross polar cap potential, electric field, and polar cap area

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Polar cap index comparisons with AMIE cross polar cap potential, electric field, and polar cap area

[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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On the observed variability of the cross–polar cap potential

[1] A study of the cross–polar cap potential estimated by the HF Super Dual Auroral Radar Network (SuperDARN) during periods of steady interplanetary magnetic field (IMF) and solar wind velocity is presented. The potential estimates were examined as time series along with time series of the IMF and solar wind. In addition, the data were examined statistically to obtain a best fit linear express...

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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 ...

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ژورنال

عنوان ژورنال: Geophysical Research Letters

سال: 2004

ISSN: 0094-8276

DOI: 10.1029/2003gl019113