Department of Geophysics

List of papers referring to PC index:

(*Papers marked by asterisk can be downloaded.



Kuznetsov BM, Troshichev OA (1977) On the nature of polar cap magnetic activity during undisturbed periods. Planet Space Sci 25: 15-21

Troshichev OA, Dmitrieva NP, Kuznetsov BM (1979) Polar cap magnetic activity as a signature of substorm development. Planet Space Sci 27: 217

Troshichev OA (1982) Polar magnetic disturbances and field-aligned currents. Space Sci Rev 32: 275-360

Troshichev OA, Andrezen VG (1985) The relationship between interplanetary quantities and magnetic activity in the southern polar cap. Planet Space Sci 33: 415

Troshichev OA, Andrezen VG, Vennerstrøm S, Friis-Christensen E (1988) Magnetic activity in the polar cap – A new index, Planet. Space Sci., 36, 1095,



Vennerstrøm S, Friis-Christensen E, Troshichev OA, Andrezen VG (1991) Comparison between the polar cap index PC and the auroral electrojet indices AE, AL and AU. J Geophys Res 96: 101

Vennerstrøm S, Friis-Christensen E, Troshichev OA, Andrezen VG (1994) Geomagnetic Polar Cap (PC) Index 1975-1993. Report UAG-103, World Data Center A, Boulder

Troshichev O, Hayakawa H, Matsuoka A, Mukai T, Tsuruda K (1996) Cross polar cap diameter and voltage as a function of PC index and interplanetary quantities, J. Geophys Res 101: 13 429

Vassiliadis D, Angelopoulos V, Baker DN, Klimas AJ (1996) The relation between the northern polar cap and auroral electrojet geomagnetic indices in the wintertime. Geophys Res Lett 23: 2781

Takalo J, Timonen J (1998) On the relation of the AE and PC indices. J Geophys Res 103: 29393

Chun FK, Knipp DJ, McHarg MG, Lu G, Emery BA, Vennerstroem S, Troshichev OA (1999) Polar cap index as a proxy for hemispheric Joule heating. Geophys Res Lett 26: 1101-1104



Troshichev OA, Lukianova R, Papitashvili VO, Rich FJ,  Rasmussen O (2000) Polar cap index (PC) as a proxy for ionospheric electric field in the near-pole region. Geophys Res Let 27: 3809-3812

Papitashvili V.O., L.I.Gromova, V.A.Popov, and O.Rasmussen, (2001) Northern Polar Cap magnetic activity index PCN: Effective area, universal time and solar cycle variations, DMI Scientific Report, SR-01-01, Copenhagen, Denmark, 57pp.

Troshichev OA, Lukianova R (2002) Relation of the PC index to the solar wind parameters and substorm activity in time of magnetic storm. J Atmos Solar-Terr Phys  64: 585

Lukianova R, Troshichev O, Lu G (2002) The polar cap magnetic activity indices in the southern (PCS) and northern (PCN) polar caps: consistency and discrepancy. Geophys Res Lett 29: 1879, doi: 10.1029/2002GL015179

Nagatsuma T (2002) Saturation of polar cap potential by intense solar wind electric fields. Geophys Res Let  29, n10, 62/1-4

Chun FK, Knipp DJ, McHarg MG, Lacey JR, Lu G, Emery BA (2002) Joule heating patterns as a function of polar cap index. J Geophys Res 107(A7), doi:10.1029/2001JA000246

Liou K, Carbary JF, Newell PT, Meng CI, Rasmussen O (2003) Correlation of auroral power with the polar index. J Geophys Res 108(A3), 1108, doi:10.1029/2002JA009556

Lukianova R (2003) Magnetospheric response to sudden changes in solar wind dynamic pressure inferred from polar cap index. J Geophys Res 108: 428

Ridley AJ, Kihn EA (2004) Polar cap index comparisons with AMIE cross polar cap potential, electric field, and polar cap area. Geophys Res Let 31, L07801, doi:10.1029/ 2003GL019113

Huang CS (2005) Variations of polar cap index in response to solar wind changes and magnetospheric substorms J Geophys Res 110, A 01203, doi:10.1029/2004JA10616

Troshichev O, Janzhura A, Stauning P (2006). Unified PCN and PCS indices: method of calculation, physical sense and dependence on the IMF azimuthal and northward components. J Geophys Res 111, A05208, doi:10.1029/2005JA011402,

Stauning P, Troshichev O, Janzhura A (2006) Polar Cap (PC) index. Unified PC-N (North) index procedures and quality, DMI Scientific Report, SR-06-04.

Janzhura A, Troshichev O, Stauning P (2007) Unified PC indices: Relation to the isolated magnetic substorms.  J Geophys Res 112,  A09207, doi: 10.1029/2006JA012132

Troshichev OA, Janzhura AS, Stauning P (2007) Magnetic activity in the polar caps: Relation to sudden changes in the solar wind dynamic pressure, J. Geophys. Res., 112, A11202, doi:10.1029/2007JA012369.

Janzhura AS, Troshichev OA (2008) Determination of the running quiet daily geomagnetic variation. J Atmos Solar-Terr Phys 70: 962-972.

* Troshichev O, Janzhura A (2009) Relationship between the PC and AL indices during repetitive bay-like magnetic disturbances in the auroral zone. J Atmos Solar-Terr Phys 71: 1340–1352

Troshichev OA, Janzhura AS,  Stauning P (2009) Correction to”Unified PCN and PCS indices: Method of calculation, physical sense, and dependence on the IMF azimuthal and northward components” J Geophys Res 114, A11202, doi:10.1029/2009JA014937

Fiori RAD, Koustov AV, Boteler D, Makarevich RA (2009) PCN magnetic index  and average convection velocity in the polar cap inferred from SuperDARN radar measurements. J Geophys Res 114: 07225. 407



* Troshichev O (2010) Relationship between magnetic activity in the polar cap and atmospheric processes in the winter Antarctica.  J Atmos Solar-Terr Phys 72: 943-950

Lyatsky W, Khazanov GV, Slavin (2010) Saturation of the electric field transmitted to the magnetosphere.  J Geophys Res 115, A08221, doi:10.1029/2009JA015091

McCreadie H, Menvielle M, The PC index: Review of methods. Ann. Geophys. 28, 1887-1903,            2010

* Troshichev O, Sormakov D, Janzhura A (2011) Relation of PC index to the geomagnetic storm Dst variation. J Atmos Solar-Terr Phys 73: 611–622

Gao Y, Kivelson MG, Walker RJ, Ridley AJ, Weygand JM, Frey HU (2011) The Relationship of the Polar Cap Index to Solar Wind Parameters and  Geomagnetic Indices. J Geophys Res 116:  (in press)

Janzhura AS Troshichev OA (2011), Identification of the IMF sector structure in near-real time by ground magnetic data. (Submitted in Ann Geohysics)

Troshichev OA, Podorozhkina NA Janzhura AS (2011) Invariability of relationship between the polar cap magnetic activity and geoeffective interplanetary electric field. (Submitted in Ann Geohysics)

Troshichev O, Janzhura A (2011) Physical implications of discrepancy between summer and winter PC indices.  J Atmos Solar-Terr Phys (Submitted in J Atmos Solar-Terr Phys)

Troshichev OA, Podorozhkina NA Janzhura AS (2011) Relationship between PC index and magnetospheric substorms observed under conditions of northward IMF (Submitted in J Atmos Solar-Terr Phys)

Frank-Kamenetsky A, Troshichev O (2011) Response of auroral absorption to magnetospheric activity expressed by the PC index. (Submitted in J Atmos Solar-Terr Phys)

Troshichev O, Sormakov D, Janzhura A (2011) Relations between PC index and substorm (AL) and storm (SYM, ASYM) indices under conditions of the steadily high solar wind energy input into the magnetosphere (Submitted in Adv Space Res)

* O. Troshichev, P. Stauning , K. Liou, G. Reeves(2011) Saw-tooth substorms: Inconsistency of repetitive bay-like magnetic disturbances with behavior of aurora

(Adv. Space Res., Advances in Space Research 47 (2011) 702–709)