Výsledky vyhledávání - "François, Pétrélis"

Earthquake magnitude distribution and aftershocks: a statistical geometry explanation

Autor: François Pétrélis, Kristel Chanard, Alexandre Schubnel, Takahiro Hatano

The emergence of a power-law distribution for the energy released during an earthquake is investigated in several models. Generic features are identified which are based on the self-affine behavior of the stress field prior to an event. This field be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::178491f8e9b1587d4d7b605f19e60f75
http://arxiv.org/abs/2302.10981

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Susceptibility of microseismic triggering to small sinusoidal stress perturbations at the laboratory scale

Autor: Martin Colledge, Kristel Chanard, Jérôme Aubry, François Pétrélis, Clara Duverger, Laurent Bollinger, Alexandre Schubnel

Small transient stress perturbations are prone to trigger (micro)seismicity. In the Earth's crust, these transient stress changes can be caused by various sources : passing of seismic waves, forcing by tides, hydrological load, and other seasonal cli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d92985760848a0cfc5529568919c019
https://doi.org/10.5194/egusphere-egu22-6034

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1/f noise and anomalous scaling in Lévy noise-driven on–off intermittency

Autor: Adrian van Kan, François Pétrélis

Publikováno v: Journal of Statistical Mechanics: Theory and Experiment. 2023:013204

On–off intermittency occurs in nonequilibrium physical systems close to bifurcation points, and is characterised by an aperiodic switching between a large-amplitude ‘on’ state and a small-amplitude ‘off’ state. Lévy on–off intermittency

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::060d88aaad041b81f4c59a56ab6a89d2
https://doi.org/10.1088/1742-5468/acac71

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Enhanced dynamo growth in nonhomogeneous conducting fluids

Autor: Florence Marcotte, Basile Gallet, Christophe Gissinger, François Pétrélis

Publikováno v: Physical Review E
Physical Review E, 2021, ⟨10.1103/PhysRevE.104.015110⟩

We address magnetic-field generation by dynamo action in systems with inhomogeneous electrical conductivity and magnetic permeability. More specifically, we first show that the Taylor-Couette kinematic dynamo undergoes a drastic reduction of its stab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea9a5c1f9b99defec188a5722d5a9cb4
http://arxiv.org/abs/2112.11390

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Symmetry breaking in a turbulent environment

Autor: Alexandros Alexakis, Kannabiran Seshasayanan, Santiago J. Benavides, François Pétrélis

Publikováno v: Physical Review Fluids
Physical Review Fluids, 2021, 6 (2), pp.024605. ⟨10.1103/PhysRevFluids.6.024605⟩

In this work we investigate symmetry breaking in the presence of a turbulent environment. The transition from a symmetric state to a symmetry-breaking state is demonstrated using two examples: (i) the transition of a two-dimensional flow to a three d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08d5085b8f8fba2b7a8286998f515b6f
https://doi.org/10.1103/physrevfluids.6.024605

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Marine Sediment Characterized by Ocean‐Bottom Fiber‐Optic Seismology

Autor: Masanao Shinohara, Zack Spica, Takeshi Akuhara, Kiwamu Nishida, Tomoaki Yamada, François Pétrélis

Publikováno v: Geophysical Research Letters
Geophysical Research Letters, American Geophysical Union, 2020, 47 (16), ⟨10.1029/2020GL088360⟩

International audience; The Sanriku ocean-bottom seismometer system uses an optical fiber cable to guarantee real-time observations at the seafloor. A dark fiber connected to a Distributed Acoustic Sensing (DAS) interrogator converted the cable in an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39b4aefa2be52f4f3b2c37aee7079d19
https://hal.archives-ouvertes.fr/hal-03052827

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Distributed acoustic sensing for seismic monitoring in challenging environments

Autor: Zack Spica, Takeshi Akuhara, Tomoaki Yamada, Biondo Biondi, Ariel Lellouch, François Pétrélis, Mathieu Perton, Masanao Shinohara, Kiwamu Nishida, Eileen Martin, Gregory C. Beroza, William L. Ellsworth, Siyuan Yuan

Our understanding of subsurface processes suffers from a profound observation bias: ground-motion sensors are rare, sparse, clustered on continents and not available where they are most needed. A new seismic recording technology called distributed ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac3c2dfef48c756f438eeb0cff7e71dd
https://doi.org/10.5194/egusphere-egu2020-1673

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Sensitivity of Acoustic Emission Triggering to Small Pore Pressure Cycling Perturbations During Brittle Creep

Autor: Kristel Chanard, François Pétrélis, S. Latour, Alexandre Schubnel, Aurélien Nicolas, Takahiro Hatano, Sergio Vinciguerra

Publikováno v: Geophysical Research Letters
Geophysical Research Letters, American Geophysical Union, 2019, 46 (13), pp.7414-7423. ⟨10.1029/2019GL082093⟩

International audience; Fluid‐induced stress perturbations in the crust at seismogenic depths caused by sources such as tidal or seasonal loading may trigger earthquakes. We investigate the role of small periodic pore pressure (Pp) perturbation in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32f426182fe2770aa7db572b4dca53b4
https://hal.archives-ouvertes.fr/hal-02397272

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