Ultra low frequency geomagnetic field measurements during earthquake activity in Italy (September-October 1997)
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Abstract
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.
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Villante U, Vellante M, Piancatelli A. Ultra low frequency geomagnetic field measurements during earthquake activity in Italy (September-October 1997). Ann. Geophys. [Internet]. 2001Dec.25 [cited 2022Jan.22];44(2). Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3594
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