Results 61 to 70 of about 22,871 (194)

Critical features in electromagnetic anomalies detected prior to the L'Aquila earthquake

, 2009
Electromagnetic (EM) emissions in a wide frequency spectrum ranging from kHz to MHz are produced by opening cracks, which can be considered as the so-called precursors of general fracture.
Amitrano, Bahat, C. Nomicos, Contoyiannis, Contoyiannis, Contoyiannis, Contoyiannis, Contoyiannis, Contoyiannis, Diakonos, Eftaxias, Eftaxias, Eftaxias, Eftaxias, Eftaxias, Enescu, G. Antonopoulos, Henegham, Herrmann, J. Kopanas, K. Eftaxias, Kalimeri, Kapiris, Karamanos, Koulouras, Kuksenko, L. Contoyianni, Papadimitriou, Pingel, Pulinets, Sornette, Turcotte, Uyeda, Y.F. Contoyiannis   +33 more
core   +1 more source

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

Thermal Infrared Anomalies of Several Strong Earthquakes

The Scientific World Journal, 2013
In the history of earthquake thermal infrared research, it is undeniable that before and after strong earthquakes there are significant thermal infrared anomalies which have been interpreted as preseismic precursor in earthquake prediction and ...
Congxin Wei, Yuansheng Zhang, Xiao Guo, Shaoxing Hui, Manzhong Qin, Ying Zhang   +5 more
doaj   +1 more source

Groundwater Level Prediction and Earthquake Precursor Anomaly Analysis Based on TCN-LSTM-Attention Network

IEEE Access
Abnormal changes in groundwater level are key indicators of seismic precursors. Before an earthquake, the groundwater level often shows varying degrees of abnormality.
Xinfang Chen, Lijia Yang, Xin Liao, Hanqing Zhao, Shiwei Wang   +4 more
doaj   +1 more source

Variation of gravity before the Alxa Zuoqi M5.8 earthquake

Geodesy and Geodynamics, 2016
In this study, a classic survey adjustment computation method was used for data obtained in the Inner Mongolia and Ningxia gravimetric networks between September 2013 and April 2015 so as to investigate the variation of gravity before the Alxa Zuoqi M5.8
Jianlin Feng, Jin Wei, Yujuan Tan, Jianzeng Qin, Bangwu Huang, Ruyi Xie   +5 more
doaj   +1 more source

Detecting All Possible Ionospheric Precursors by Kernel-Based Two-Dimensional Principal Component Analysis

IEEE Access, 2019
Kernel-based two-dimensional principal component analysis (K2DPCA), a nonlinear method, was performed to examine ionospheric 2-D total electron content (TEC) variations obtained from the NASA Global Differential GPS (GDGPS) network, which consisted of ...
Jyh-Woei Lin, Juing-Shian Chiou, Chun-Tang Chao   +2 more
doaj   +1 more source

Exalting in atmospheric tides as earthquake precursor [PDF]

Natural Hazards and Earth System Sciences, 2003
During February–March 1998, we observed a significant increase (6–8 dB) in the electric field of the CZE (f = 270 kHz, Czech Republic) broadcasting station at a site named AS and located in central Italy.
P. F. Biagi, R. Piccolo, V. Capozzi, A. Ermini, S. Martellucci, S. Martellucci, C. Bellecci, C. Bellecci   +7 more
doaj  

The synergy of earthquake precursors [PDF]

Earthquake Science, 2011
The system of geophysical shells (lithosphere, atmosphere, ionosphere) is considered as an open complex nonlinear system with dissipation where earthquake preparation could be regarded as a self-organizing process leading to the critical state of the system.
openaire   +1 more source

Electro-Magnetic Earthquake Bursts and Critical Rupture of Peroxy Bond Networks in Rocks

, 2006
We propose a mechanism for the low frequency electromagnetic emissions and other electromagnetic phenomena which have been associated with earthquakes. The mechanism combines the critical earthquake concept and the concept of crust acting as a charging ...
Allègre, Alperovich, Andersen, Andersen, Anifrani, Ashby, Bak, Bell, Bianchi, Bouchaud, Bowman, Bowman, Bowman, Bowman, Brehm, Brehm, Bufe, Bufe, Chen, Cliverd, Contoyiannis, D. Sornette, Debate on VAN (special issue), Derr, Dey, Dickinson, Dieterich, Edwards, Eftaxias, Eftaxias, Ellsworth, F. Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Frid, Friebele, Frost, Fujinawa, Fujinawa, Garcimartin, Gershenzon, Gokhberg, Hayakawa, Heimpel, Helmstetter, Hickman, Huang, Huang, Ivanov, Jaumé, Johansen, Johansen, Johnston, Jones, Jones, Kagan, Kapiris, Kapiris, Kathrein, Keilis-Borok, Keilis-Borok, Keilis-Borok, King, King, King, Knopoff, Kopytenko, Kossobokov, Lei, Lei, Lei, Levin, Lindh, Liu, Liu, Ma, Main, Martelli, Martens, Martin, Mogi, Molchanov, Molchanov, Molchanov, Mora, Moura, Moura, Moura, Naaman, NASDA-CON-960003, Nechad, Nechad, Nitsan, Ohta, Ondoh, Ouillon, Ouillon, Ouzounov, Park, Place, Pulinets, Pulinets, Pulinets, Qiang, Rabinovitch, Raleigh, Regenauer-Lieb, Ricci, Rossman, Roux, Sahimi, Saleur, Sammis, Sammis, Shamir, Smyth, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sorokin, Srivastav, St-Laurent, Stauffer, Sykes, Taylor, Tocher, Trigunait, Tronin, Tronin, Tsukuda, Varotsos, Vere-Jones, Vershinin, Wilson, Yasui, Yen, Yoshida, Yoshino, Yukalov, Zhuang, Zlotnicki   +158 more
core   +1 more source

Penentuan Prekursor Gempa Bumi Menggunakan Data Magnetotellurik di Daerah Pelabuhan Ratu [PDF]

, 2013
The research has been done by using data of electromagnetic parameter base on the result of magnetotelluric observation which located in geophysics observation Pelabuhan Ratu.
Fransiska, N. (Noviana), Nurdiyanto, B. (Boko), Setyawan, A. (Agus)   +2 more
core