Anomalous Geomagnetic Variations Possibly Linked with the Taiwan Earthquake (Mw=6.4) on 19 December 2009
Figure 6
The correlation plots of the geomagnetic data acquired at the HLN and AMA stations in September (a) and December 2009 (b) with the standard deviation value for each component during the two months (nighttime data 1100–2100 UT).
