Results 51 to 60 of about 25,380 (253)

Monitoring Surface Deformation Before the M7.0 Kumamoto and M6.6 Chitose Earthquakes for Precursor [PDF]

E3S Web of Conferences
Earthquakes have resulted in significant damage; however, the extent of the ground observation coverage remains limited. Thus, a deeper understanding of seismic activity and its precursors holds promise in mitigating earthquake hazards.
Zulhamidi Nur Fatin Irdina, Abdullah Mardina, Nurul Shazana Abdul Hamid, Yusof Khairul Adib   +3 more
doaj   +1 more source

Experimental study on dynamic behavior analysis of coal and its acoustic emission response characteristics under impact failure

Deep Underground Science and Engineering, EarlyView.
Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang, Huijian Fu, Yingke Liu, Zhaoxi Long, Yang Liu, Tengrui Yang, Yanbo Sun, Mingjun Jiang, Xiaojiang Wen, Yue Niu, Ruixi Cheng   +10 more
wiley   +1 more source

Understanding Animal Detection of Precursor Earthquake Sounds

Animals, 2017
We use recent research to provide an explanation of how animals might detect earthquakes before they occur. While the intrinsic value of such warnings is immense, we show that the complexity of the process may result in inconsistent responses of animals ...
Michael Garstang, Michael C. Kelley
doaj   +1 more source

Brief communication "Further comments on the ionospheric precursor of the 1999 Hector Mine earthquake" [PDF]

Natural Hazards and Earth System Sciences, 2013
Pulinets et al. (2007) document anomalous changes in the ionospheric total electron content (TEC) starting one week before the 16 October 1999 Hector Mine earthquake.
F. Masci
doaj   +1 more source

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

Deep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying, Yu Ying, Xiaohan Li, Han Zhao, Kewei Yu, Zheming Zhu, Lei Zhou, Xibin Li   +7 more
wiley   +1 more source

Comment on "Ultra Low Frequency (ULF) European multi station magnetic field analysis before and during the 2009 earthquake at L'Aquila regarding regional geotechnical information" by Prattes et al. (2011) [PDF]

Natural Hazards and Earth System Sciences, 2012
Prattes et al. (2011) report ULF magnetic anomalous signals claiming them to be possibly precursor of the 6 April 2009 <i>M</i>_W = 6.3 L'Aquila earthquake.
F. Masci
doaj   +1 more source

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

Reverse Detection of Short-Term Earthquake Precursors [PDF]

, 2003
We introduce a new approach to short-term earthquake prediction based on the concept of selforganization of seismically active fault networks. That approach is named "Reverse Detection of Precursors" (RDP), since it considers precursors in reverse order ...
A. Gabrielov, Bird, Blanter, Bowman, Buffe, Caputo, D. Turcotte, Gabrielov, Gabrielov, Jaume, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, King, Knopoff, Kossobokov, Newman, Novikova, P. Shebalin, Press, Romanowicz, Rotwain, Rundquist, Shebalin, V. Keilis-Borok, Zaliapin, Zaliapin, Zaliapin, Zöller   +33 more
core   +1 more source

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Low frequency seismogenic electromagnetic emissions as precursors to earthquakes and volcanic eruptions in Japan [PDF]

, 1991
A multipoint network was constructed in the Tokyo area for earthquake prediction using seismogenic electromagnetic emissions. The network consists of eight observation points within 50 km of each other.Each point has a digital direction-finding detector ...
Takeo Yoshino
core   +1 more source