Impedance-admittance regression analysis of magnetotelluric fields

Moskovskaya, L. F.

doi:10.1134/s106935130702005x

Cited by 2 publications

(1 citation statement)

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“…A wide complex of geophysical research is applied to studying the phenomena occurring and diagnostics of seismic activation of the region. It is primarily direct method: seismic survey and registration of radiation associated with the deformation and crushing of rock-the acoustic and low-frequency electromagnetic radiation, gas emanations [1][2][3][4][5] Preparation processes are reflected variations of anomalies of temperature and pressure, electrical resistivity of the earth's crust [6][7][8][9][10][11]. Due to the close interaction of geophysical shells, the Earth abnormal physical fields of the lithosphere in the process of earthquake preparation excite anomalies in the atmosphere and ionosphere.…”

Section: Introductionmentioning

confidence: 99%

Model of the singular current source—The indicator of geodynamic processes in Japan in 2009-2011

Moskovskaya¹

2013

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The calculation method of the location of the singular generalized current source according to synchronous measurements of the magnetic field in the remote points is proposed. It is designed for the continuous monitoring of changes of the degree of electromagnetic heterogeneity of the geophysical environment. Regular fluctuations of the apparent distance to the effective single source were recorded according to the magnetic data of the observatories in Japan 2009-2011. They are connected with the rhythm of the geodynamic processes in the vicinity of the station Kakioka. The most significant decrease in the apparent distance was registered in connection with the seismic activation of the region, including the catastrophic earthquake of March 11, 2011 with a magnitude of M = 9.1. The anomalous behavior of the apparent parameters of the generalized source was displayed not less than two weeks before the earthquake. Characteristic changes of the curves were registered in the period of three months.

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