Results 51 to 60 of about 22,871 (194)

Predictability of Self-Organizing Systems

, 1993
We study the predictability of large events in self-organizing systems. We focus on a set of models which have been studied as analogs of earthquake faults and fault systems, and apply methods based on techniques which are of current interest in ...
B. Gutenbrg, B. Shaw, C. Scholz, D. P. Schwartz, G. M. Mochan, J. Carlson, J. Carlson, J. Carlson, J. M. Carlson, J. Socolar, J.-B. Minster, K. Chen, K. Christensen, K. O'Brian, P. Bak, R. Burridge, R. E. Habermann, S. L. Pepke, V. Keilis-Borok, Y. Y. Kagan, Z. Olami   +20 more
core   +2 more sources

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

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

Possible precursor to the March 11, 2011, Japan earthquake: ionospheric perturbations as seen by subionospheric very low frequency/low frequency propagation

Annals of Geophysics, 2012
<p>This study reports on a possible very low frequency/low frequency (VLF/LF) subionospheric precursor to a recent earthquake in Japan. As the epicenter of this large Japanese earthquake on March 11, 2011, was located just on the great-circle path ...
Jun Izutsu, Hiroki Yamaguchi, Kenji Ohta, Yoshihiro Yasuda, Yasuhide Hobara, Masashi Hayakawa, Tohru Nakamura   +6 more
doaj   +1 more source

Integrating Pre-Earthquake Signatures From Different Precursor Tools

IEEE Access, 2021
Potential earthquake precursors include, among others, electromagnetic fields, gas emissions, Land Surface Temperature (LST), Sea Surface Temperature (SST), and Surface Air Temperature (SAT) anomalies.
Essam Ghamry, Emad K. Mohamed, Mohamed S. Abdalzaher, Mohamed Elwekeil, Dedalo Marchetti, Angelo De Santis, Mostafa Hegy, Akimasa Yoshikawa, Adel Fathy   +8 more
doaj   +1 more source

Scale free networks of earthquakes and aftershocks

, 2003
We propose a new metric to quantify the correlation between any two earthquakes. The metric consists of a product involving the time interval and spatial distance between two events, as well as the magnitude of the first one.
A. Helmstetter, A. Wagner, B. Gutenberg, C. Frohlich, C. H. Scholz, D. P. Hill, D. Stauffer, D. Turcotte, F. Omori, G. M. Molchan, J. Gardner, L. Knopoff, L. Knopoff, M. Faloutsos, Marco Baiesi, Maya Paczuski, P. Bak, P. Bak, T. Hirata, T. Utsu, V. Keilis-Borok, Y. Y. Kagan   +21 more
core   +1 more source

Earthquake forecasting and its verification [PDF]

, 2005
No proven method is currently available for the reliable short time prediction of earthquakes (minutes to months). However, it is possible to make probabilistic hazard assessments for earthquake risk. These are primarily based on the association of small
Holliday, James R., Nanjo, Kazuyoshi Z., Rundle, John B., Tiampo, Kristy F., Turcotte, Donald L.   +4 more
core   +2 more sources

Detection of gravity changes before powerful earthquakes in GRACE satellite observations

Annals of Geophysics, 2014
The variations of gravity field have been analyzed in this article, in order to find disturbances in the vicinity of recent great earthquakes epicenters including Chile (February 27, 2010), Tohoku-Oki (March 11, 2011) and Indian Ocean (April 11, 2012 ...
Mohsen Shahrisvand, Mehdi Akhoondzadeh, Mohammad Ali Sharifi   +2 more
doaj   +1 more source

The Effect of Catalogue Lead Time on Medium-Term Earthquake Forecasting with Application to New Zealand Data

Entropy, 2020
‘Every Earthquake a Precursor According to Scale’ (EEPAS) is a catalogue-based model to forecast earthquakes within the coming months, years and decades, depending on magnitude.
David A. Rhoades, Sepideh J. Rastin, Annemarie Christophersen   +2 more
doaj   +1 more source

Kalman Filter, ANN-MLP, LSTM and ACO Methods Showing Anomalous GPS-TEC Variations Concerning Turkey’s Powerful Earthquake (6 February 2023)

Remote Sensing, 2023
On 6 February 2023, at 1:17:34 UTC, a powerful Mw = 7.8 earthquake shook parts of Turkey and Syria. Investigating the behavior of different earthquake precursors around the time and location of this earthquake can facilitate the creation of an earthquake
Mehdi Akhoondzadeh
doaj   +1 more source