Anomalous Geomagnetic Variations Possibly Linked with the Taiwan Earthquake (Mw=6.4) on 19 December 2009

Figure 3

One-minute average values of the H (a), D (b), and Z (c) components recorded at the HLN (red curves) and AMA (blue curves) stations in September 2009.

(a)

(b)

(c)