Geomagnetic Observation at Syowa Station, Antarctica
Geomagnetic variation observation by fluxgate magnetometer
Magnetometer		Type: SHIMADZU MB-162, 3-axis fluxgate magnetometer Range: +/-2,500 nT, Resolution: 0.1 nT H: local magnetic northward, D: magnetic eastward, Z: downward
Data logger		1. ATLAS: 16bit A/D for full range of +/-10 V, 20Hz sampling 2. NTDL logger: 24 bit A/D for full range of +/-10 V, 20Hz sampling
Geomagnetic variation data
Today's Magnetogram (refreshed at every hour)
Magnetometer data daily plot viewer
QL plot of daily Magnetogram of new 24bit data logger (since 19 Jan.,2016)
Make a Plot of the Data (recorded with new 24bit data logger since Jan.9,2016)
Make a Plot of the Data (recorded with 16bit data logger)
Obtain the Text file (IAGA2002 format) (recorded with 24bit data logger since Jan.9, 2016)
Obtain the Text file (IAGA2002 format) (recorded with 16bit data logger)
Archives (1 sec daily text file)		16bit logger: IAGA format / plain format
		24bit logger: IAGA format / plain format
List of Base line values of Geomagnetic variation data (since 1997)
K-index
K-indices are calculated for every 3-hour interval (in Universal Time) measuring the amplitudes of the H- and D-component magnetic fields. Definition of the K-indices at Syowa Station is as follows: K 0 1 2 3 4 5 6 7 8 9 range(nT) 0-25 25-50 50-100 100-200 200-350 350-600 600-1000 1000-1650 1650-2500 2500- K-index List of each year           00 01 02 03 04 05 06 07 08 09 1960 Y Y Y Y 1970 Y Y Y Y Y Y Y Y Y Y 1980 Y Y Y Y Y Y Y Y Y Y 1990 Y Y Y Y Y Y Y Y Y Y 2000 Y Y Y Y Y Y Y Y Y Y 2010 Y Y Y Y Y Y Y Y Y Y 2020 Y Y Y Y Y Y
K-index monthly data list
K-index long-term variation plot with sunspot number
K-index averaged seasonal variation plot
Geomagnetic Absolute Observation
Instrument		Fluxgate Theodolite (FT) type D/I meter: Bartington Mag-01H, Mag A probe Proton magnetometer: Tierra Tecnica PM-218 Observation frequency: about 1 time/month, manual observation
Data
Whole observation list of Geomagnetic parameters (since 1966)
List of yearly mean value of Geomagnetic parameters (since 1966)
Long term variation plot of Geomagnetic parameters (since 1966)
Geomagnetic total intensity observation by Overhauser magnetometer (since Jan.20, 2023)
Magnetometer		GSM-90F, Range: 20,000~120,000nT, resolution: 0.01nT, sampling: 1 sec
Data logger		Tierra Tecnica DTM-9F
Data
Archive of daily data
Daily plot viewer (OHM only / OHM & MAG)
Make a Plot of OHM & MAG data
Contact
Polar Environment Data Science Center (PEDSC), Joint Support-Center for Data Science Research (DS), Research Organization of Information and Systems (ROIS) -------------------------- 10-3, Midoricho, Tachikawa, Tokyo 190-8518, Japan http://pedsc.rois.ac.jp/en/ E-mail to: Akira Kadokura (kadokura (at) nipr.ac.jp)
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