Pre-seismic Geomagnetic and Ionosphere Signatures Related to the Mw5.7 Earthquake Occurred in Vrancea Zone on September 24, 2016

• Autorzy: Stanica D. A. , Stanica D. , Błęcki J. , Ernst T. , Jóźwiak W , Słomiński J.

Identyfikatory

DOI

10.1007/s11600-018-0115-4

• Języki publikacji: EN

Abstrakty

EN

To emphasize the relationship between the pre-seismic geomagnetic signals and Vrancea seismicity, in this work it is hypothesized that before an earthquake initiation, the high stress reached into seismogenic volume generates dehydration of the rocks and fracturing processes followed by release of electric charges along the faulting systems, which lead to resistivity changes. These changes were explored on September 2016 by the normalized function Bzn obtained from the geomagnetic data recorded in ULF range (0.001-0.0083 Hz). A statistical analysis was also performed to discriminate on the new Bzn* time series a pre-seismic signature related to the Mw5.7 earthquake. Significant anomalous behavior of Bzn* was identified on September 21, with 3 days prior to the onset of the seismic event. Similar information is provided by registrations of the magnetic and electron concentration variations in the ionosphere over the Vrancea zone, by Swarm satellites, 4 days and 1 day before the earthquake.

Słowa kluczowe

EN

ionospheric effects; Mw5.7 earthquake; pre-seismic geomagnetic signature; seismic active Vrancea zone; swarm satellite

PL

efekt jonosferyczny

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2018
• Tom: Vol. 66, no. 2
• Strony: 167--177
• Opis fizyczny: Bibliogr. 37 poz.

Twórcy

autor

Stanica D. A.

• Institute of Geodynamics of the Romanian Academy, Bucharest, Romania

autor

Stanica D.

• Institute of Geodynamics of the Romanian Academy, Bucharest, Romania

autor

Błęcki J.

• Space Research Centre, Polish Academy of Sciences, Warsaw, Poland

autor

Ernst T.

• Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland

autor

Jóźwiak W

• Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland

autor

Słomiński J.

• Space Research Centre, Polish Academy of Sciences, Warsaw, Poland

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)