Magnetic Perturbations before the Strong Earthquakes

作者：Guglielmi A V^*; Zotov O D

来源：Izvestiya-Physics of the Solid Earth, 2012, 48(2): 171-173.

DOI：10.1134/S1069351312010065

• seismic activity
• geomagnetism

The search for the magnetic precursors of earthquakes by the method of synchronous detection is described. The data of the Guam Observatory (13.6 degrees N, 144.9 degrees E) located in a seismically active region and the USGS/NEIC catalogue of the National Earthquake Information Center of the U.S. Geological Survey for the period from 1991 to 2009 are used. Earthquakes with magnitudes M >= 7 in the range of longitudes from 100 degrees to 170 degrees E are analyzed. The intervals of accumulation cover 40 hours before and 40 hours after an earthquake. The preliminary result reveals an enhancement of fluctuations in the Z-component within 12 hours before the earthquake.

• 出版日期2012-2