Open AccessUltra low frequency geomagnetic field measurements during earthquake activity in Italy (September-October 1997)
Author(s) -
U. Villante,
M. Vellante,
A. Piancatelli
Publication year - 2009
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-3594
Subject(s) - earth's magnetic field , seismology , geology , amplitude , geophysics , ultra low frequency , geodesy , range (aeronautics) , magnetic field , physics , astronomy , materials science , quantum mechanics , composite material
Different methods with different results have been proposed in the scientific literature to identify the possible occurrence of weak seismo-magnetic ULF emissions. In September-October, 1997 Central Italy was struck by repeated seismic activity (M L < 5.8). A simple amplitude analysis of the geomagnetic field variations (horizontal components, in the frequency range 4-100 mHz) at a geomagnetic facility located 65-85 km from epicenters of major earthquakes does not reveal in this case any clear evidence for possible ULF emissions