Results 21 to 30 of about 22,871 (194)

Radon as Earthquake Precursor [PDF]

, 2012
Earthquake predictions are based mainly on the observation of precursory phenomena. However, the physical mechanism of earthquakes and precursors is at present poorly understood, because the factors and conditions governing them are so complicated. Methods of prediction based merely on precursory phenomena are therefore purely empirical and involve ...
IMME', Giuseppina, MORELLI D.
openaire   +3 more sources

Short-term electromagnetic precursors of earthquakes

Геодинамика и тектонофизика, 2019
In the study of the relationship between electromagnetic and seismotectonic processes, we analyzed the data of three observatories located at large distances, considering both latitudes and longitudes, and detected electromagnetic impulses in the ...
B. V. Dovbnya, A. Yu. Pashinin, R. A. Rakhmatulin   +2 more
doaj   +1 more source

On the puzzling feature of the silence of precursory electromagnetic emissions [PDF]

, 2013
It has been suggested that fracture-induced MHz-kHz electromagnetic (EM) emissions, which emerge from a few days up to a few hours before the main seismic shock occurrence permit a real-time monitoring of the damage process during the last stages of ...
Chelidze, T., Eftaxias, K., Potirakis, S. M.   +2 more
core   +2 more sources

ANALISIS ANOMALI SINYAL ULTRA LOW FREQUENCY BERDASARKAN DATA PENGUKURAN GEOMAGNETIK SEBAGAI INDIKATOR PREKURSOR GEMPABUMI WILAYAH LAMPUNG TAHUN 2016

JGE, 2020
Regional research had been done to analysis anomalies signal of ultra low frequency based on measurement data as an indicator of the geomagnetic earthquake precursor of lampung in 2016. To achieve purpose of the study conducted by the following steps: (i)
Ulfa Wahyuningsih, Syamsurijal Rasimeng, Karyanto Karyanto   +2 more
doaj   +1 more source

Sub-critical and Super-critical Regimes in Epidemic Models of Earthquake Aftershocks [PDF]

, 2002
We present an analytical solution and numerical tests of the epidemic-type aftershock (ETAS) model for aftershocks, which describes foreshocks, aftershocks and mainshocks on the same footing.
Abercrombie, Abramowitz, Agnès Helmstetter, Bender, Blanter, Bowman, Bowman, Console, Correig, Daley, Davis, Didier Sornette, Drakatos, Dreger, Evison, Evison, Feller, Felzer, Gardner, Glöckle, Gross, Guo, Guo, Harris, Harris, Hawkes, Hawkes, Hawkes, Hawkes, Helmstetter, Hough, Huang, Johansen, Jones, Kagan, Kagan, Kagan, Kagan, Kagan, Keilis-Borok, Keilis-Borok, Kisslinger, Kisslinger, Knopoff, Laherrère, Lee, Liu, Main, Matsu'ura, Meltzner, Meredith, Molchan, Molchan, Morse, Moyal, Ogata, Ogata, Ogata, Ogata, Ogata, Ogata, Olver, Pujol, Ranalli, Reasenberg, Reasenberg, Reasenberg, Sammis, Scholz, Simeonova, Smith, Sornette, Sornette, Sornette, Steeples, Sykes, Tajima, Utsu, Vere-Jones, Vere-Jones, Viljoen, Wiemer, Wyss, Yamashita, Zhang   +84 more
core   +3 more sources

Investigating short-term earthquake precursors detection through monitoring of total electron content variation in ionosphere

Frontiers in Astronomy and Space Sciences, 2023
The effectiveness and accuracy of earthquake precursors are measured by the ability of the precursors to predict the time, epicentral distance, and magnitude of the earthquake for short-term earthquake prediction.
Nur Fatin Irdina Zulhamidi, Mardina Abdullah, Mardina Abdullah, Nurul Shazana Abdul Hamid, Nurul Shazana Abdul Hamid, Khairul Adib Yusof, Khairul Adib Yusof, Siti Aminah Bahari   +7 more
doaj   +1 more source

An earthquake precursor mobile network

Earthquake Science, 2021
It is known that the VLF/LF radiation existing prior to large earthquakes is recorded in several seismically active countries of the world. The networks of this radiation consist of stationary transmitters and receivers. However, there are cases of large earthquakes, when existing networks cannot detect relevant EM radiation.
Kachakhidze, Manana, Kachakhidze-Murphy, Nino, Khazaradze, Giorgi, Khvitia, Badri   +3 more
openaire   +2 more sources

Linear elastic fracture mechanics predicts the propagation distance of frictional slip [PDF]

, 2014
When a frictional interface is subject to a localized shear load, it is often (experimentally) observed that local slip events initiate at the stress concentration and propagate over parts of the interface by arresting naturally before reaching the edge.
Ampuero, Jean-Paul, Kammer, David S., Molinari, Jean-François, Radiguet, Mathilde   +3 more
core   +2 more sources

On the Statistical Significance of the Variability Minima of the Order Parameter of Seismicity by Means of Event Coincidence Analysis [PDF]

, 2020
Natural time analysis has led to the introduction of an order parameter for seismicity when considering earthquakes as critical phenomena. The study of the fluctuations of this order parameter has shown that its variability exhibits minima before strong ...
Christopoulos, Stavros, Sarlis, N. V., Skordas, E.S.   +2 more
core   +1 more source

Sudden drop of fractal dimension of electromagnetic emissions recorded prior to significant earthquake

, 2013
The variation of fractal dimension and entropy during a damage evolution process, especially approaching critical failure, has been recently investigated.
A Olemskoy, A Ponomarev, A Rabinovitch, A Voss, B Enescu, B-L Hao, BB Mandelbrot, BS Raghavendra, C Kontoes, C Lu, C Papadimitriou, CH Scholz, D Bahat, G. Minadakis, J Schmittbuhl, J Weeks, K Eftaxias, K Eftaxias, K Eftaxias, K Eftaxias, K Karamanos, K Karamanos, K Mogi, K. Eftaxias, L Telesca, L Telesca, M Gokhberg, M Kalimeri, P Kapiris, S Shoupeng, S Uyeda, S. M. Potirakis, T Higuchi, X Zhou, X-L Lei, Y Contoyiannis, Y Tsukakoshi, Y-M Wu, YH Li   +38 more
core   +1 more source