The relationship between interplanetary quantities and magnetic activity in the southern polar cap

Трошичев, О. А.; Andrezen, V. G.

doi:10.1016/0032-0633(85)90086-8

Cited by 101 publications

(97 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We also used the Polar Cap (PC) index (Troshichev and Andrezen, 1985;Troshichev and Janzhura, 2012), which 15 was created as a proxy of dawn-dusk electric field in the polar cap and Region 1 currents of Iijima and Potemra (1976) intensity. We took for the analysis the one minute values of the AE and PC indices when the spacecraft was at the equatorward boundary of the auroral oval.…”

Section: Instrumentation and Data Analysismentioning

confidence: 99%

A relation between the locations of the polar boundary of outer electron radiation belt and the equatorial boundary of the auroral oval

Riazanteseva

Антонова

Stepanova

et al. 2018

Preprint

View full text Add to dashboard Cite

keV, and electrons with energies >100 keV, measured simultaneously by the GGAK-M set of instruments, composed by 15 semiconductors, scintillator detectors, and electrostatic analyzers. We assume that at the absence of geomagnetic storms the external boundary of the outer radiation belt can be identified as a decrease in the count rate of precipitating energetic electrons to the background level. It was found that this boundary can be located both inside the auroral oval or to the equator from the equatorial boundary of the auroral precipitations. It was also found that for disturbed geomagnetic conditions the external boundary of the outer radiation belt is almost always located inside the auroral oval. We observe that 20 the difference between the position of the outer boundary of the outer radiation belt and the position of the equatorial boundary of auroral precipitations depends on the AE and PC indexes of geomagnetic activity. The implications of these results in the analysis of the formation of the outer radiation belt is discussed.

show abstract

Section: Instrumentation and Data Analysismentioning

confidence: 99%

A relation between the locations of the polar boundary of outer electron radiation belt and the equatorial boundary of the auroral oval

Riazanteseva

Антонова

Stepanova

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…The Polar Cap (PC) index was originally introduced by Troshichev & Andrezen (1985) as a measure of the interplanetary electric field derived from available polar ground-based magnetic observations. The PC index concept was further developed by Troshichev et al (1988) and Vennerstrøm (1991).…”

Section: Basicsmentioning

confidence: 99%

Power grid disturbances and polar cap index during geomagnetic storms

Stauning

2013

J. Space Weather Space Clim.

View full text Add to dashboard Cite

The strong geomagnetic storm in the evening of 30 October 2003 caused high-voltage power grid disturbances in Sweden that expanded to produce hour-long power line outage in Malmö located in the southern part of the country. This was not a unique situation. The geomagnetic storm on 13 March 1989 caused extensive disruptions of high-voltage power circuits especially in the Province of Quebec, Canada, but also to a lesser degree in Scandinavia. Similar events have occurred earlier, among others, during the great storms of 13-14 July 1982 and 8-9 February 1986. These high-voltage power grid disturbances were related to impulsive magnetic variations accompanying extraordinarily intense substorm events. The events were preceded by lengthy intervals of unusually high values of the Polar Cap (PC) index caused by enhanced transpolar ionospheric convection. The transpolar convection transports magnetic flux from the dayside to nightside which causes equatorward displacements of the region of auroral activity enabling the substorms to hit vital power grids. During the 30 October 2003 event the intense solar proton radiation disabled the ACE satellite observations widely used to provide forecast of magnetic storm events. Hence in this case the alarmingly high PC index could provide useful warning of the storm as a back-up of the missing ACE-based forecast. In further cases, monitoring the PC index level could provide supplementary storm warnings to the benefit of power grid operators.

show abstract

“…(3) what the definition of MAGPC (Troshichev and Andrezen, 1985) is. It is the same definition as PC(B z ) (Troshichev et al, 1979).…”

Section: C16mentioning

confidence: 99%

“…It is the same definition as PC(B z ) (Troshichev et al, 1979). As we state on p. 1890: "The term MAGPC index was coined in Troshichev and Andrezen (1985). However the method of deriving the index was first defined in Troshichev et al (1979)."…”

Section: C16mentioning

confidence: 99%

Reply to Stauning's comment on "The PC index: review of methods" by McCreadie and Menvielle (2010)

McCreadie

Menvielle

2011

Ann. Geophys.

View full text Add to dashboard Cite

The relationship between interplanetary quantities and magnetic activity in the southern polar cap

Cited by 101 publications

References 12 publications

A relation between the locations of the polar boundary of outer electron radiation belt and the equatorial boundary of the auroral oval

A relation between the locations of the polar boundary of outer electron radiation belt and the equatorial boundary of the auroral oval

Power grid disturbances and polar cap index during geomagnetic storms

Reply to Stauning's comment on "The PC index: review of methods" by McCreadie and Menvielle (2010)

Contact Info

Product

Resources

About

The relationship between interplanetary quantities and magnetic activity in the southern polar cap

Cited by 101 publications

References 12 publications

A relation between the locations of the polar boundary of outer electron radiation belt and the equatorial boundary of the auroral oval

A relation between the locations of the polar boundary of outer electron radiation belt and the equatorial boundary of the auroral oval

Power grid disturbances and polar cap index during geomagnetic storms

Reply to Stauning's comment on &quot;The PC index: review of methods&quot; by McCreadie and Menvielle (2010)

Contact Info

Product

Resources

About

Reply to Stauning's comment on "The PC index: review of methods" by McCreadie and Menvielle (2010)