Results 21 to 30 of about 1,577 (144)

Anomalies Observed in VLF and LF Radio Signals on the Occasion of the Western Turkey Earthquake (Mw = 5.7) on May 19, 2011 [PDF]

, 2012
VLF radio signals lie in the 10 - 60 kHz frequency band. These radio signals are used for worldwide navigation support, time signals and for military purposes.
Arabelos, D.N., Bezzeghoud, M., Biagi, F., Buyuksarac, A., Contadakis, M.E., Ermini, A., Ligonzo, T., Maggipinto, T., Moldovan, A.S., Moldovan, I.A., Righetti, F., Schiavulli, L., Silva, H.G., Xenos, T.   +13 more
core   +1 more source

Influence of Lightning on the Observation of Seismic Electromagnetic Wave Anomalies

Terrestrial, Atmospheric and Oceanic Sciences, 2007
For two decades, many researchers have been claiming that pre-seismic electromagnetic phenomena may be useful in short-term earthquake prediction. Despite much effort, however, the relationship between anomalous electromagnetic signals and earthquakes ...
Jun Izutsu
doaj   +1 more source

Laboratory investigation of coupled electrical interaction of fracturing rock with gases

Earth, Planets and Space, 2021
In the coupled electric interaction of rock fractures and gas invasion, that is, when gases interact with newly created crack surfaces, the unpaired electrons within the rock crystal defects are thermally stimulated, released into the crack due to the ...
Yuji Enomoto, Tsuneaki Yamabe, Shigeki Sugiura, Hitoshi Kondo   +3 more
doaj   +1 more source

Ionospheric Effects of Natural Hazards in Geophysics: From Single Examples to Statistical Studies Applied to M5.5+ Earthquakes

Proceedings, 2022
Geophysical natural hazards, such as earthquakes and volcano eruptions, can have catastrophic effects on the population depending on the location and quality of construction.
Dedalo Marchetti, Kaiguang Zhu, Rui Yan, Zeren Zhima, Xuhui Shen, Wenqi Chen, Yuqi Cheng, Mengxuan Fan, Ting Wang, Jiami Wen, Donghua Zhang, Hanshuo Zhang, Yiqun Zhang   +12 more
doaj   +1 more source

Pressure stimulated currents in rocks and their correlation with mechanical properties [PDF]

, 2004
The spontaneous electrification of marble samples was studied while they were subjected to uniaxial stress. The Pressure Stimulated Current (PSC) technique was applied to measure the charge released from compressed Dionysos marble samples, while they ...
Agioutantis, Z, Clarke, M, Maurigiannakis, S, Saltas, V, Stavrakas, I, Triantis, D, Vallianatos, F   +6 more
core   +3 more sources

Magnetotelluric monitoring of geodynamic processes

Annals of Geophysics, 1997
Electromagnetic (EM) monitoring of geodynamic processes can be based on the two different seismo-electrical phenomena: a change in resistivity of some geological cross-sections and a generation of EM fields of internal (geodynamic) origin.
V. I. Odintsov, Y. I. Kuksa, S. D. Karinskij, B. S. Svetov   +3 more
doaj   +1 more source

Anomalous effect in Schumann resonance phenomena observed in Japan, possibly associated with the Chi-chi earthquake in Taiwan [PDF]

, 2005
The Schumann resonance phenomenon has been monitored at Nakatsugawa (near Nagoya) in Japan since the beginning of 1999, and due to the occurance of a severe earthquake (so-called Chi-chi earthquake) on 21 September 1999 in Taiwan we have examined our ...
A. P. Nickolaenko, A. P. Nickolaenko, K. Ohta, M. Hayakawa, Y. Ando   +4 more
core   +3 more sources

The effect of earth tides as observed in seismo-electromagnetic precursory signals [PDF]

Natural Hazards and Earth System Sciences, 2009
Studies on the effect of earth tides in triggering earthquakes (EQs) had a great progress in recent years, which has provided convincing evidence of earth tides in EQ triggering.
M. Hayakawa, Y. Sue, T. Nakamura
doaj  

Statistical Mechanics and Information-Theoretic Perspectives on Complexity in the Earth System [PDF]

, 2013
Peer reviewedPublisher ...
Balasis, Georgios, Daglis, Ioannis A., Donner, Reik V., Eftaxias, Konstantinos, Kurths, Juergen, Papadimitriou, Constantinos, Potirakis, Stelios M., Runge, Jakob   +7 more
core   +3 more sources

Multi-component ground-based observation of ULF waves: goals and methods

Annals of Geophysics, 1998
A revival of the combined magnetic and telluric electric measurements at magnetic observatories is suggested.A number of problems, where such observations might be very helpful, are outlined: 1) the account for the resonance structure of the ULF field ...
E. N. Fedorov, M. De Lauretis, S. Anisimov, M. Vellante, V. A. Pilipenko, U. Villante   +5 more
doaj   +1 more source