Atmospheric field variations before the March 31, 2002 M6.8 earthquake in Taiwan

Atmospheric electric field (AEF) observations and other concurrent measurements have been carried out in Taiwan over a three-year period in the context of seismo-electromagnetic studies. Generally, AEF variations appear to be due to meteorological effects. However, there seems to have been a correlation between AEF and the largest M6.8 earthquake on 31 March, 2002.