INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 1 of 9. International Service of Geomagnetic Indices
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1 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 1 of 9 International Service of Geomagnetic Indices Monthly Bulletin June 2017 This Bulletin is freely offered to interested Scientists thanks to the support of the hosting laboratory EOST and of French Organisations of Scientific Research (CNRS, INSU, BCMT). Special thanks are due to contributors (ISGI Collaborating Institutes) for providing the here published geomagnetic data within shortly possible delay. Contents 1 IAGA Endorsed Geomagnetic Indices (non-definitive values) aa am Kp Dst PC AE IAGA Endorsed Geomagnetic Events (non-definitive values) SC (SSC/SI) and SFE Classification of days Truly magnetically very quiet (C) and quiet (K) periods (from aa) international quietest days (Q1-10) and 5 most disturbed days (D1-5) 9
2 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 2 of 9 1 IAGA Endorsed Geomagnetic Indices (non-definitive values) 1.1 aa Ecole et Observatoire des Sciences de la Terre 5, rue René Descartes Strasbourg Cedex - FRANCE Contact: A. Chambodut <isgi@unistra.fr> ROT DAY IN SOLAR ROTATION INTERVAL Three hour index aa (logscale) 2017 No nt am Ecole et Observatoire des Sciences de la Terre 5, rue René Descartes Strasbourg Cedex - FRANCE Contact: A. Chambodut <isgi@unistra.fr> ROT DAY IN SOLAR ROTATION INTERVAL Three hour index am (logscale) 2017 No nt
3 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 3 of Kp Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum Adolf-Schmidt-Observatorium Lindenstr Niemegk - GERMANY Contact: J. Matzka <kp index@gfz-potsdam.de> ROT DAY IN SOLAR ROTATION INTERVAL Three hour index Kp 2017 No o+ o+ o+ o+ o+ o+ o+ o+ o+ o
4 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 4 of Dst World Data Center for Geomagnetism, Kyoto Data Analysis Center for Geomagnetism and Space Magnetism Graduate School of Science, Kyoto University Kitashirakawa-Oiwake Cho, Sakyo-ku Kyoto JAPAN Contact: M. Nosé <nose@kugi.kyoto-u.ac.jp> index (nt) Dst June Days
5 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 5 of PC ISGI Collaborating Institutes: Arctic and Antarctic Research Institute Department of geophysics, 38 Bering str. St.Petersburg, RUSSIAN FEDERA- TION Contact: O. Troshichev <olegtro@aari.nw.ru> and A. Janzhura <alex j@aari.nw.ru> World Data Center for Geomagnetism, Copenhagen DTU Space, National Space Institute Elektrovej, building 327 DK-2800 Kgs. Lyngby - DENMARK N. Olsen <nio@space.dtu.dk> indices (hourly means, mv/m) PCN and PCS June Days
6 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 6 of AE World Data Center for Geomagnetism, Kyoto Data Analysis Center for Geomagnetism and Space Magnetism Graduate School of Science, Kyoto University Kitashirakawa-Oiwake Cho, Sakyo-ku Kyoto JAPAN Contact : M. Nosé <nose@kugi.kyoto-u.ac.jp> indices (hourly means, nt) AE, AU, AL and AO June Days
7 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 7 of 9 2 IAGA Endorsed Geomagnetic Events (non-definitive values) 2.1 SC (SSC/SI) and SFE Observatori de l Ebre Horta Alta, Roquetes - SPAIN Contact : J. J. Curto <jjcurto@obsebre.es> SC: A: GUI B: LER* ESK* HAD* SPT* C: EBR B: LER WNG NGK HAD* C: VAL* DOU GCK EBR SPT* GUI SFE: NONE
8 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 8 of Classification of days ISGI Collaborating Institutes: Ecole et Observatoire des Sciences de la Terre 5, rue René Descartes Strasbourg Cedex - FRANCE Contact: A. Chambodut <isgi@unistra.fr> Helmholtz-Zentrum Potsdam Deutsches Geo- ForschungsZentrum Adolf-Schmidt-Observatorium Lindenstr Niemegk - GERMANY Contact : H.-J. Linthe and J. Matzka <kp index@gfz-potsdam.de> Date Aa CK24 CK48 Ap Q/D K C - 4 Q K C K 2 Q C C C C C C C C 3 Q C C 3 Q C C 3 Q D3* C C C C - 3 Q D D2* D4* C C 2 Q C C 3 Q C C C K D5* C C C C 3 Q C C C C 3 Q5
9 INTERNATIONAL SERVICE OF GEOMAGNETIC INDICES Monthly Bulletin June Page 9 of Truly magnetically very quiet (C) and quiet (K) periods (from aa) The values for the CK24 { define quietest days over 24-hours with: K indicates a quiet K-day with (p) 4 (aa) = Aa < 13 nt C indicates a really quiet C-day with (p) < 4 The values for { the CK48 define quietest days over 48-hours with: K indicates a quiet K-day with (p) 6 (aa) < 13 nt C indicates a really quiet C-day with (p) < 6 where p is a weigth assigned at each aa value international quietest days (Q1-10) and 5 most disturbed days (D1-5) The values for Q-Days, Q1 Q10, are the order number of the ten quietest days of the month. A selected quiet day is considered not really quiet and is: - marked by the letter A if (Ap > 6 nt); - marked by the letter K if (Ap 6 nt), or if one (Kp > 3), or two (Kp > 2+). The values for D-Days, D1 D5, are the order number of the five most disturbed days of the month. A selected disturbed day is considered not really disturbed and marked by * if (Ap < 20 nt).
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