Detection of ultra-low-frequency emissions connected with the Spitak earthquake and its aftershock activity, based on geomagnetic pulsations data at Dusheti and Vardzia observatories
作者： Yu.A. Kopytenko , T.G. Matiashvili , P.M. Voronov , E.A. Kopytenko , O.A. Molchanov
DOI: 10.1016/0031-9201(93)90035-8
关键词: Earth's magnetic field 、 Geology 、 Ultra low frequency 、 Seismo-electromagnetics 、 Aftershock 、 Seismology 、 Epicenter
摘要: Abstract ULF electromagnetic emissions from the Spitak (Armenia) earthquake site have been detected. Observations were carried out at Dusheti and Vardzia (Georgia) observatories distances 120–200 km epicentre in a frequency range 0.005–1 Hz. It is shown that emission appears several hours before main shock some of powerful aftershocks not connected with geomagnetic pulsations magnetospheric sources.
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