Cross Correlations of Geomagnetic Field Variations Between Zhongshan and Arctic Stations

• Published in: Chinese Journal of Geophysics
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2006
• Subjects: Arctic; Bear Island; Hopen; Tromso; Zhongshan; Zhongshan Station; Antarc*; Antarctica; Hopen island
• Online Access: http://dx.doi.org/10.1002/cjg2.945; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjg2.945; https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/cjg2.945

Abstract The occurrence rates of the cross correlations of the inter‐hemispheric geomagnetic field variations are studied statistically with the magnetic data observed at Zhongshan Station, Antarctica and at Ny‐Alesund, Longyearben, Hopen Island, Bear Island and Tromso in the Arctic during Sept. 2000 to Mar. 2003, in which the criterion is that the correlation coefficient within sliding 20 min bin is larger than 0.9. It is shown that the occurrence rates of correlations of geomagnetic field variations between Zhongshan and Arctic stations are related to locations of the Arctic stations, season, local time and geomagnetic active level. Among the 5 stations in the Arctic, Longyearben is correlated most frequently with Zhongshan (17%), Ny‐Alesund or Hopen take the second place. In the equinox, the occurrence rate of correlations is higher than other seasons. In the daily variation of the occurrence rate of correlations, there is a peak in the evening and a valley at noon. The occurrence rate of correlation increases as geomagnetic activities increase.