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Brief Communication on the Recent Reaffirmation of Ulf Magnetic Earthquakes Precursors : Volume 11, Issue 8 (12/08/2011)

By Masci, F.

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Book Id: WPLBN0004017620
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: Brief Communication on the Recent Reaffirmation of Ulf Magnetic Earthquakes Precursors : Volume 11, Issue 8 (12/08/2011)  
Author: Masci, F.
Volume: Vol. 11, Issue 8
Language: English
Subject: Science, Natural, Hazards
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Masci, F. (2011). Brief Communication on the Recent Reaffirmation of Ulf Magnetic Earthquakes Precursors : Volume 11, Issue 8 (12/08/2011). Retrieved from

Description: Istituto Nazionale di Geofisica e Vulcanologia, Italy. Hayakawa et al. (2009) and Hayakawa (2011) have recently reviewed some anomalous ULF signatures in the geomagnetic field which previous publications have claimed to be earthquake precursors. The motivation of this review is to offer a further support to the definite presence of those anomalies. Here, these ULF precursors are reviewed once again. This brief communication shows that the reviewed anomalies do not increase the credibility on the presence of electromagnetic phenomena associated with an earthquake since these anomalous signals are actually caused by normal geomagnetic activity. Furthermore, some of these ULF precursors have just been rebutted by previous publications.

Brief communication On the recent reaffirmation of ULF magnetic earthquakes precursors

Campbell, W. H.: Natural magnetic disturbance fields, not precursors, preceding the Loma Prieta earthquake, J. Geophys. Res., 114, A05307, doi:10.1029/2008JA013932, 2009.; Gotoh, K., Akinaga, Y., Hayakawa, M., and Hattori, K.: Principal component analysis of ULF geomagnetic data for Izu islands earthquakes in July 2000, J. Atmos. Electr., 22(1), 1–12, 2002.; Hattori, K., Serita, A., Gotoh, C., Yoshino, C., Haradam, M., Isezaki, N., and Hayakawa, M.:ULF geomagnetic anomaly associated with 2000 Izu Islands earthquake swarm, Japan, Phys. Chem. Earth, 29, 425–435, doi:10.1016/j.pce.2003.11.014, 2004.; Hayakawa, M., Kawate, R., Molchanov, O. A., and Yumoto, K.: Results of ultra-low-frequency magnetic field measurements during the Guam earthquake of 8 August 1993, Geophys. Res. Lett., 23, 241–244, doi:10.1029/95GL02863, 1996.; Hayakawa, M., Sue, Y., and Nakamura, T.: The effect of earth tides as observed in seismo-electromagnetic precursory signals, Nat. Hazards Earth Syst. Sci., 9, 1733–1741, doi:10.5194/nhess-9-1733-2009, 2009.; Hayakawa, M.: On the fluctuation spectra of seismo-electromagnetic phenomena, Nat. Hazards Earth Syst. Sci., 11, 301–308, doi:10.5194/nhess-11-301-2011, 2011.; Ida, Y. and Hayakawa, M.: Fractal analysis for the ULF data during the 1993 Guam earthquake to study prefracture criticality, Nonlin. Processes Geophys., 13, 409–412, doi:10.5194/npg-13-409-2006, 2006.; Masci, F.: On claimed ULF seismogenic fractal signatures in the geomagnetic field, J. Geophys. Res., 115, A10236, doi:10.1029/2010JA015311, 2010.; Masci, F.: On the seismogenic increase of the ratio of the ULF geomagnetic field components, Phys. Earth Planet, doi:10.1016/j.pepi.2011.05.001, 2011.; Saito, T.: Geomagnetic pulsations, Space Sci. Rev., 10, 319–342, doi:10.1007/BF00203620, 1969.; Tanaka, S., Ohtake, M., and Sato, H.: Tidal triggering of earthquakes in Japan related to the regional tectonic stress, Earth Planets Space, 56(5), 511–515, 2004.; Tanaka, S.: Tidal triggering of earthquakes precursory to the recent Sumatra megathrust earthquakes of 26 December 2004 (Mw 9.0), 28 March 2005 (Mw 8.6), and 12 September 2007 (Mw 8.5), Geophys. Res. Lett., 37, L02301, doi:10.1029/2009GL041581, 2010.; Thomas, J., Love, J., and Johnston, M.: On the reported magnetic precursor of the 1989 Loma Prieta earthquake, Phys. Earth Planet., 173, 207–215, doi:10.1016/j.pepi.2008.11.014, 2009a.; Thomas, J. N., Love, J. J., Johnston, M. J. S., and Yumoto, K.: On the reported magnetic precursor of the 1993 Guam earthquake, Geophys. Res. Lett., 36, L16301, doi:10.1029/2009GL039020, 2009b.


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