Ionospheric perturbations related to the earthquake in Vrancea area on November 22, 2014, as detected by electromagnetic VLF/LF frequency signals

by Maria Solovieva, Alexander Rozhnoi, Viktor Fedun, Konrad Schwingenschuh, Masashi Hayakawa
Published 2015-11-01

Low frequency signal spectrum analysis for strong earthquakes

by Masashi Hayakawa, Konrad Schwingenschuh, Pier Francesco Biagi, Maria Solovieva, Alexander Rozhnoi
Published 2012-04-01

Ionospheric turbulence from ground-based and satellite VLF/LF transmitter signal observations for the Simushir earthquake (November 15, 2006)

by Pier Francesco Biagi, Masashi Hayakawa, Michel Parrot, Maria Solovieva, Alexander Rozhnoi, Konrad Schwingenschuh
Published 2012-04-01

The Ionospheric Precursor to the 2011 March 11 Earthquake Based upon Observations Obtained from the Japan-Pacific Subionospheric VLF/LF Network

by Masashi Hayakawa, Yasuhide Hobara, Alexander Rozhnoi, Maria Solovieva, Kenji Ohta, Jun Izutsu, Tohru Nakamura, Yasushi Kasahara
Published 2013-01-01

Neural network approach to the prediction of seismic events based on low-frequency signal monitoring of the Kuril-Kamchatka and Japanese regions

by Irina Popova, Alexander Rozhnoi, Maria Solovieva, Boris Levin, Masashi Hayakawa, Yasuhide Hobara, Pier Francesco Biagi, Konrad Schwingenschuh
Published 2013-08-01

Ionospheric perturbations associated with two huge earthquakes in Japan, using principal component analysis for multiple subionospheric VLF/LF propagation paths

by Maria Solovieva, Alexander Rozhnoi, Masashi Hayakawa, Yasushi Kasahara, Yasuhide Hobara, Yuichi Ida, Yuya Ono, Oleg A. Molchanov, Kenji Ohta
Published 2012-04-01