Prattes et al. (2011) report ULF magnetic anomalous signals claiming them to be possibly precursor of the 6 April 2009 M<SUB>W</SUB> = 6.3 L'Aquila earthquake. This comment casts doubts on the possibility that the observed magnetic signatures could have a seismogenic origin by showing that these pre-earthquake signals are actually part of normal global geomagnetic activity.

Authors: 
Masci, F.
Journal: 
Natural Hazards and Earth System Sciences
Publication Year: 
2012
DOI: 
10.5194/nhess-12-1717-2012