Memambetsu geomagnetic field 7.5-second digitized data in IAGA-2002 format, extracted from magnetograms

2016-03-30 00:00:00

The geomagnetic field 7.5-second digitized data in IAGA-2002 format, extracted from magnetograms at Memambetsu (MMB). The data may include reading errors. When a trace is overlapped with a baseline on the magnetogram, the missing value with 99999 may be embedded.

If the data are used in publications and presentations, the Kakioka Magnetic Observatory of the Japan Meteorological Agency should be acknowledged properly. This work was supported in part by the Japan Society for the Promotion of Science, Grant-in-Aid for Publication of Science Research Results (Grant 248032, 268023, 15HP8028) and Cooperative Research on Database Construction of Geospace Research Center, Solar-Terrestrial Environment Laboratory, Nagoya University.

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43.91

43.91

144.189

144.189

0.042

0.042

Reference: MMB

Geomagnetic field digitized from magnetograms

7.5-second values are calculated by interpolation of 7.62-second values. Then 7.5-second values are calibrated using absolute values observed at a one-week interval. The data may include daily variation caused by temperature change. D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]