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Дата изменения: Unknown Дата индексирования: Fri Dec 21 22:00:13 2007 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п п п п п п п п п п п п |
Dr. H.-J. Linthe, mailto:kp_index@gfz-potsdam.deBoth recent and past tables (since 1932) are supplied as an archive on the FTP servers
Background information on geomagnetic indices and the classification of days is supplied at the WWW startpage http://www.gfz-potsdam.de/~kp_index/
Ks indices range in 28 steps from 0 (quiet) to 9 (greatly disturbed) with fractional parts expressed in thirds of a unit. A Ks-value equal to 27, for example, means 2 and 2/3 or 3-; a Ks-value equal to 30 means 3 and 0/3 or 3 exactly; and a Ks-value equal to 33 means 3 and 1/3 or 3+. The arithmetic mean of the Ks values scaled at the 13 observatories listed above gives Kp.
Column Format Description ====== ====== =========== 1- 2 i2 yy, last two digits of year 3- 4 i2 mm, month (1-12) 5- 6 i2 dd, day of month (1-31) 7-10 i4 Bartels solar rotation number - a sequence of 27-day intervals counted continuously from February 8, 1832 11-12 i2 Number of day within the Bartels 27-day cycle 13-28 8i2 3-hourly Kp indices (0-3, 3-6, 6-9, 9-12, 12-15, 15-18, 18-21, 21-24 UT) 29-31 i3 Daily Kp sum, expressed to the nearest third of a unit (supplied only for tradition, use Ap scientific purposes!) 32-55 8i3 3-hourly ap indices (0-3, 3-6, 6-9, 9-12, 12-15, 15-18, 18-21, 21-24 UT) 56-58 i3 Ap equivalent daily amplitude - the arithmetic mean of the day's eight ap values 59-61 f3.1 Cp or Planetary Daily Character Figure - a qualitative estimate of overall level of magnetic activity for the day determined from the sum of the eight ap amplitudes. Cp ranges, in steps of one-tenth, from 0 (quiet) to 2.5 (highly disturbed) 62-62 i1 C9 - a conversion of the 0 to 2.5 range of the Cp index to one digit between 0 and 9 63-65 i3 International Sunspot Number. Records contain * Zurich number through December 31, 1980 * International Brussels number thereafter 66-70 f5.1 Ottawa 10.7 cm Solar Radio Flux adjusted to 1 AU - measured at 1700 UT daily and expressed in units of 10^-22 W/m^2/Hz. Observations began on February 14, 1947. From that date through December 31, 1973, the fluxes given here do not reflect the revisions Ottawa made in 1966. 71-71 i1 Flux Qualifier 0: indicates flux required no adjustment; 1: indicates flux required adjustment for burst in progress at time of measurement; 2: indicates a flux approximated by either interpolation or extrapolation; 3: indicates no observation.
Dr. H.-J. Linthe, mailto:kp_index@gfz-potsdam.de