Results 61 to 70 of about 23,012 (224)

Elastoplasticity Informed Kolmogorov–Arnold Networks Using Chebyshev Polynomials

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Multilayer perceptron (MLP) networks are predominantly used to develop data‐driven constitutive models for granular materials. They offer a compelling alternative to traditional physics‐based constitutive models in predicting non‐linear responses of these materials, for example, elastoplasticity, under various loading conditions. To attain the
Farinaz Mostajeran, Salah A. Faroughi
wiley   +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

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

Current challenges for preseismic electromagnetic emissions: shedding light from micro-scale plastic flow, granular packings, phase transitions and self-affinity notion of fracture process [PDF]

, 2013
Are there credible electromagnetic (EM) EQ precursors? This a question debated in the scientific community and there may be legitimate reasons for the critical views.
Eftaxias, K., Potirakis, S. M.
core   +2 more sources

Tree growth response and adaptation to climate change and climate extremes: From canopy to stem

Journal of Integrative Plant Biology, EarlyView.
This review synthesizes the responses and adaptations of tree growth, including canopy phenology, intra‐annual wood formation dynamics, and annual stem growth, to climate change and climate extremes. It highlights key knowledge gaps for future research to support sustainable forest management and enhance forest carbon storage under ongoing climate ...
Feiyu Yang, Leyao Zhu, Jiahao Cao, Fei Yang, Borbála Codogno, Qianqian Ma, Hanxue Liang, Wenjin Wang, Jian‐Guo Huang   +8 more
wiley   +1 more source

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

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

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

Real-time setup to measure radon emission during rock deformation. Implications for geochemical surveillance [PDF]

, 2015
Laboratory experiments can represent a valid approach to unravel the complex interplay between the geochemical behaviour of radon and rock deformation mechanisms.
Castelluccio, M., Mollo, Silvio, Scarlato, P., Soligo, M., Tuccimei, P   +4 more
core   +3 more sources

What Are Asset Price Bubbles? A Survey on Definitions of Financial Bubbles

Journal of Economic Surveys, EarlyView.
ABSTRACT Financial bubbles and crashes have repeatedly caused economic turmoil notably but not just during the 2008 financial crisis. However, both in the popular press as well as scientific publications, the meaning of bubble is sometimes unspecified.
Michael Heinrich Baumann, Anja Janischewski   +1 more
wiley   +1 more source