Re-Evaluation of Geomagnetic Field Observation Data at Syowa Station, Antarctica

Data Science Journal

Y Minamoto¹  I Tomofumi¹  S Arita¹  K Takahashi¹  A Kadokura² 

[1] Kakioka Magnetic Observatory, Japan Meteorological Agency, Kakioka 595, Ishioka, Ibaraki 315-0116, Japan;National Institute of Polar Research, 10-3 Midoricho, Tachikawa, Tokyo 190-8518, Japan;

关键词: Absolute geomagnetic observations;    Geomagnetic variation measurement;    Baseline value;    Syowa Station;    Antarctica;   

DOI  :  10.2481/dsj.WDS-044

来源: DOAJ

【 摘 要 】

The Japanese Antarctic Research Expedition has conducted geomagnetic observations at Syowa Station, Antarctica, since 1966. Geomagnetic variation data measured with a fluxgate magnetometer are not absolute but are relative to a baseline and show drift. To enhance the importance of the geomagnetic data at Syowa Station, therefore, it is necessary to correct the continuous variation data by using absolute baseline values acquired by a magnetic theodolite and proton magnetometer. However, the database of baseline values contains outliers. We detected outliers in the database and then converted the geomagnetic variation data to absolute values by using the reliable baseline values.

【 授权许可】

Unknown