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Denis Migov - IEEE Xplore Author Profile

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Author details

Denis Migov

Also published under: Denis A. Migov

Publications

12

Citations

45

Publications by Year

20122024

Co-Authors:

Artyom KalneyTatiana NasibullinaSergei NesterovAlexey RodionovOlga Rodionova

Show All Co-Authors (11)

Denis Migov

Also published under: Denis A. Migov

Affiliation

Institute of Computational Mathematics and Mathematical Geophysics SB RAS (ICMMG), Novosibirsk, Russia

Publication Topics

Network Reliability,
Random Graph,
Communication Network,
Factorization,
Network Topology,
Numerical Experiments,
Parallel Algorithm,
Primary Network,
Secondary Network,
Sink Node,
Undirected,
Wireless Networks

Biography

Denis Migov received the diploma of mathematician and programmer in applied mathematics and informatics from the Novosibirsk State University, Novosibirsk, Russia, in 2003. In 2008, he received Ph.D. (Candidate of science) degree in the field of “Mathematical modeling, numerical methods and program complexes” from the Institute of Computational Mathematics and Mathematical Geophysics of the Siberian Branch of the Russian Academy of Sciences. He is a senior research fellow at the Laboratory of “System modeling and optimization” of the named institute. His scientific interests are in graph theory, network reliability calculation, network topology optimization, wireless sensor networks, and parallel algorithms on graphs and networks.(Based on document published on 26 December 2019).

Publications

12

Citations

45

Publications by Year

20122024

Co-Authors:

Artyom Kalney
Tatiana Nasibullina
Sergei Nesterov
Alexey Rodionov
Olga Rodionova

Show All Co-Authors (11)

Author's Published Works

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Showing 1-25 of 9,936 resultsfor "Index Terms":Fault Zone

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Results

Properties of inelastic yielding zones generated by in-plane dynamic ruptures—II. Detailed parameter-space study

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Geophysical Journal International

Year: 2012 | Volume: 191, Issue: 3 | Journal Article |

We perform a detailed parameter-space study on properties of yielding zones generated by 2-D in-plane dynamic ruptures on a planar fault with different friction laws and parameters, different initial stress conditions, different rock cohesion values, and different contrasts of elasticity and mass density across the fault. The focus is on cases corresponding to large strike-slip faults having high ...Show More

Properties of inelastic yielding zones generated by in-plane dynamic ruptures—II. Detailed parameter-space study

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Geophysical Journal International

Year: 2012 | Volume: 191, Issue: 3 | Journal Article |

Off-fault damage and acoustic emission distributions during the evolution of structurally complex faults over series of stick-slip events

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Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 3 | Journal Article |

Variations in fault structure, for example, surface roughness and deformation zone width, influence the location and dynamics of large earthquakes as well as the distribution of small seismic events. In nature, changes in fault roughness and seismicity characteristics can rarely be studied simultaneously, so that little is known about their interaction and evolution. Here, we investigate the conne...Show More

Off-fault damage and acoustic emission distributions during the evolution of structurally complex faults over series of stick-slip events

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Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 3 | Journal Article |

Post-seismic and interseismic fault creep I: model description

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Geophysical Journal International

Year: 2010 | Volume: 181, Issue: 1 | Journal Article |

We present a model of localized, aseismic fault creep during the full interseismic period, including both transient and steady fault creep, in response to a sequence of imposed coseismic slip events and tectonic loading. We consider the behaviour of models with linear viscous, non-linear viscous, rate-dependent friction, and rate- and state-dependent friction fault rheologies. Both the transient p...Show More

Post-seismic and interseismic fault creep I: model description

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Geophysical Journal International

Year: 2010 | Volume: 181, Issue: 1 | Journal Article |

A continuum mechanics approach to quantify brittle strain on weak faults: application to the extensional reactivation of shallow dipping discontinuities

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Geophysical Journal International

Year: 2011 | Volume: 184, Issue: 1 | Journal Article |

A number of field observations suggest that sliding on fault planes may occur at very shallow dip in the brittle field. The existence of active low angle normal faults is much debated because (1) the classical theory of fault mechanics implies that faults are locked when the dip is less than 30° and (2) shallow dipping fault planes do not produce large earthquakes (M > 5.5). To reconcile observati...Show More

A continuum mechanics approach to quantify brittle strain on weak faults: application to the extensional reactivation of shallow dipping discontinuities

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Geophysical Journal International

Year: 2011 | Volume: 184, Issue: 1 | Journal Article |

Comparison of frequency of occurrence of earthquakes with slip rates from long-term seismicity data: the cases of Gulf of Corinth, Sea of Marmara and Dead Sea Fault Zone

Geophysical Journal International

Year: 2006 | Volume: 165, Issue: 2 | Journal Article |

In this article, through the comparison of knowledge relating to historical earthquakes with the understanding of present-day earthquake mechanics and overall GPS slip rates in the eastern Mediterranean region, it has been possible to obtain an idea of how frequently large earthquakes may be expected in some parts of the region. It has also been possible to make an assessment from these early even...Show More

Comparison of frequency of occurrence of earthquakes with slip rates from long-term seismicity data: the cases of Gulf of Corinth, Sea of Marmara and Dead Sea Fault Zone

Geophysical Journal International

Year: 2006 | Volume: 165, Issue: 2 | Journal Article |

Microseismic activity and fluid fault interactions: some results from the Corinth Rift Laboratory (CRL), Greece

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Geophysical Journal International

Year: 2009 | Volume: 178, Issue: 1 | Journal Article |

The Gulf of Corinth, in western-central Greece, is one of the fastest continental rifts in the world. In its western section near the city of Aigion, the previous work has outlined the existence of a shallow dipping seismogenic zone between 5 and 12 km. This seismic activity has been monitored with a network of 12 three-component stations for the period 2000–2007. Three, few months long, seismic s...Show More

Microseismic activity and fluid fault interactions: some results from the Corinth Rift Laboratory (CRL), Greece

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Geophysical Journal International

Year: 2009 | Volume: 178, Issue: 1 | Journal Article |

Stress redistribution following unwelding of near-surface layers in strike-slip fault zones

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Geophysical Journal International

Year: 2012 | Volume: 188, Issue: 3 | Journal Article |

Major strike-slip earthquakes are often associated with a complex pattern of surface fractures, organized in hierarchic order (en-echelon shear fracture arrays, open tensile fractures and hillocks), which are oriented differently from the strike of the main fault and often extend laterally 1 or 2 km. In the attempt to understand why the main fault remains confined at depth, we have considered the ...Show More

Stress redistribution following unwelding of near-surface layers in strike-slip fault zones

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Geophysical Journal International

Year: 2012 | Volume: 188, Issue: 3 | Journal Article |

Characterization of pulverized granitoids in a shallow core along the San Andreas Fault, Littlerock, CA

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Geophysical Journal International

Year: 2011 | Volume: 186, Issue: 2 | Journal Article |

We present results on the composition, structure and particle size distribution (PSD) of pulverized and damaged granitic rocks in a 42-m-deep core adjacent to the San Andreas Fault near Littlerock, CA. The cored section is composed of pulverized granites and granodiorites, and is cut by numerous mesoscopic secondary shears. The analysis employs XRD, XRF, thin sections and semi-automated particle s...Show More

Characterization of pulverized granitoids in a shallow core along the San Andreas Fault, Littlerock, CA

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Geophysical Journal International

Year: 2011 | Volume: 186, Issue: 2 | Journal Article |

Properties of inelastic yielding zones generated by in-plane dynamic ruptures—I. Model description and basic results

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Geophysical Journal International

Year: 2012 | Volume: 191, Issue: 3 | Journal Article |

We discuss results associated with 2-D numerical simulations of in-plane dynamic ruptures on a fault governed by slip-weakening and rate-and-state friction laws with off-fault yielding. The onset of yielding is determined by a Mohr–Coulomb-type criterion whereas the subsequent inelastic response is described by a Duvaut-Lions-type viscoplastic rheology. The study attempts to identify key parameter...Show More

Properties of inelastic yielding zones generated by in-plane dynamic ruptures—I. Model description and basic results

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Geophysical Journal International

Year: 2012 | Volume: 191, Issue: 3 | Journal Article |

Subduction earthquake sequences in a non-linear visco-elasto-plastic megathrust

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Geophysical Journal International

Year: 2021 | Volume: 229, Issue: 1 | Journal Article |

We present a 2-D thermomechanical computational framework for simulating earthquake sequences in a non-linear visco-elasto-plastic compressible medium. The method is developed for a plane-strain problem and incorporates an invariant formulation of the classical rate- and state-dependent friction law and an adaptive time-stepping, which allows the time step to vary by many orders of magnitude durin...Show More

Subduction earthquake sequences in a non-linear visco-elasto-plastic megathrust

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Geophysical Journal International

Year: 2021 | Volume: 229, Issue: 1 | Journal Article |

Long-term slow slip events are not necessarily caused by high pore fluid pressure at the plate interface: An implication from two-dimensional model calculations

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Geophysical Journal International

Year: 2008 | Volume: 174, Issue: 1 | Journal Article |

A recent tomographic study proposed that high-pore pressure in the deeper portion of the locked zone of a subduction thrust resulting from metamorphic dehydration reactions may cause long-term slow slip events. The study used the concept of ‘critical fault stiffness’, which derives from laboratory-derived rate- and state-dependent friction laws. To test the proposition, we execute 2-D model calcul...Show More

Long-term slow slip events are not necessarily caused by high pore fluid pressure at the plate interface: An implication from two-dimensional model calculations

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Geophysical Journal International

Year: 2008 | Volume: 174, Issue: 1 | Journal Article |

Fault-zone healing effectiveness and the structural evolution of strike-slip fault systems

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Geophysical Journal International

Year: 2011 | Volume: 186, Issue: 3 | Journal Article |

Numerical simulations of long-term crustal deformation reveal the important role that damage healing (i.e. fault-zone strengthening) plays in the structural evolution of strike-slip fault systems. We explore the sensitivity of simulated fault zone structure and evolution patterns to reasonable variations in the healing-rate parameters in a continuum damage rheology model. Healing effectiveness, de...Show More

Fault-zone healing effectiveness and the structural evolution of strike-slip fault systems

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Geophysical Journal International

Year: 2011 | Volume: 186, Issue: 3 | Journal Article |

Heterogeneous material properties—as inferred from seismic attenuation—influenced multiple fault rupture and ductile creep of the Kaikoura Mw 7.8 earthquake, New Zealand

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Geophysical Journal International

Year: 2021 | Volume: 227, Issue: 2 | Journal Article |

The 2016 Mw 7.8 Kaikoura, New Zealand, earthquake occurred along the eastern margin of the transition region between active subduction in the North Island and oblique collision in the South Island. To infer crustal properties, we imaged Q (1/seismic attenuation) by combining selected M > 3.5 aftershocks with data from previous Q models. For 158 distributed aftershocks, we fit spectral decay on tem...Show More

Heterogeneous material properties—as inferred from seismic attenuation—influenced multiple fault rupture and ductile creep of the Kaikoura Mw 7.8 earthquake, New Zealand

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Geophysical Journal International

Year: 2021 | Volume: 227, Issue: 2 | Journal Article |

High-resolution structures of the Landers fault zone inferred from aftershock waveform data

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Geophysical Journal International

Year: 2007 | Volume: 171, Issue: 3 | Journal Article |

High-frequency body waves recorded by a temporary seismic array across the surface rupture trace of the 1992 Landers, California, earthquake were used to determine fault-zone structures down to the seismogenic depth. We first developed a technique to use generalized ray theory to compute synthetic seismograms for arbitrarily oriented tabular low-velocity fault-zone models. We then generated synthe...Show More

High-resolution structures of the Landers fault zone inferred from aftershock waveform data

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Geophysical Journal International

Year: 2007 | Volume: 171, Issue: 3 | Journal Article |

Systematic analysis of crustal anisotropy along the Karadere—Düzce branch of the North Anatolian fault

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Geophysical Journal International

Year: 2004 | Volume: 159, Issue: 1 | Journal Article |

We perform a systematic analysis of crustal anisotropy along and around the Karadere—Düzce branch of the North Anatolian fault (NAF), which ruptured during the 1999 Mw 7.4 İzmit and Mw 7.1 Düzce earthquakes. A method consisting of an iterative grid search for the best shear wave splitting parameters in sliding time windows is applied to ∼22 000 measurements recorded in the 6-month period after the...Show More

Systematic analysis of crustal anisotropy along the Karadere—Düzce branch of the North Anatolian fault

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Geophysical Journal International

Year: 2004 | Volume: 159, Issue: 1 | Journal Article |

Influence of hydromechanical heterogeneities of fault zones on earthquake ruptures

Geophysical Journal International

Year: 2011 | Volume: 185, Issue: 2 | Journal Article |

Fluid pressurization, a possible mechanism of fault weakening, exerts a critical control on earthquake rupture in the upper crust. One cause for this control is the presence of high fluid pressures inside the fault zone. However, the precise mechanisms relating high fluid pressures and fault rupture remain unclear. Here, we use 2-D hydromechanical models to show that effective stress changes induc...Show More

Influence of hydromechanical heterogeneities of fault zones on earthquake ruptures

Geophysical Journal International

Year: 2011 | Volume: 185, Issue: 2 | Journal Article |

Decrypting healed fault zones: how gouge production reduces the influence of fault roughness

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Geophysical Journal International

Year: 2020 | Volume: 225, Issue: 1 | Journal Article |

Two key parameters control the localization of deformation and seismicity along and surrounding crustal faults: the strength and roughness of the pre-existing fault surface. Using 3-D discrete element method simulations, we investigate how the anisotropy and amplitude of roughness control the mechanical behaviour of healed faults within granite blocks during quasi-static triaxial compression. We f...Show More

Decrypting healed fault zones: how gouge production reduces the influence of fault roughness

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Geophysical Journal International

Year: 2020 | Volume: 225, Issue: 1 | Journal Article |

Isotropic source terms of San Jacinto fault zone earthquakes based on waveform inversions with a generalized CAP method

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Geophysical Journal International

Year: 2014 | Volume: 200, Issue: 2 | Journal Article |

We analyse source tensor properties of seven Mw > 4.2 earthquakes in the complex trifurcation area of the San Jacinto Fault Zone, CA, with a focus on isotropic radiation that may be produced by rock damage in the source volumes. The earthquake mechanisms are derived with generalized ‘Cut and Paste’ (gCAP) inversions of three-component waveforms typically recorded by >70 stations at regional distan...Show More

Isotropic source terms of San Jacinto fault zone earthquakes based on waveform inversions with a generalized CAP method

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Geophysical Journal International

Year: 2014 | Volume: 200, Issue: 2 | Journal Article |

Induced seismicity of a normal blind undetected reservoir-bounding fault influenced by dissymmetric fractured damage zones

Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 1 | Journal Article |

Fluid injection in deep sedimentary porous formations might induce shear reactivation of reservoir bounding faults. Here, we focus on ‘blind’ 1000-m-long normal faults (with shear displacement ≤10 m), which can hardly be detected using conventional seismic surveys, but might potentially induce seismicity felt on surface. The influence of the dissymmetry in the internal structure of the fractured d...Show More

Induced seismicity of a normal blind undetected reservoir-bounding fault influenced by dissymmetric fractured damage zones

Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 1 | Journal Article |

Modelling fluid transfer and slip in a fault zone when integrating heterogeneous hydromechanical characteristics in its internal structure

Geophysical Journal International

Year: 2009 | Volume: 178, Issue: 3 | Journal Article |

Fluid pressure has significant effects on the mechanical behaviour of fault zones, because it can change dramatically throughout the earthquake cycle. Here, we discuss how the heterogeneity of the fault materials affects the fluid transfer and slip processes in and around a fault zone. We present a numerical analysis of the interaction between fluid, stress and the development of slip in a fault z...Show More

Modelling fluid transfer and slip in a fault zone when integrating heterogeneous hydromechanical characteristics in its internal structure

Geophysical Journal International

Year: 2009 | Volume: 178, Issue: 3 | Journal Article |

Episodic tremor and slip on a frictional interface with critical zero weakening in elastic solid

Geophysical Journal International

Year: 2012 | Volume: 189, Issue: 2 | Journal Article |

Non-Volcanic Tremor (NVT) and related relatively weak and slow slip events termed Episodic Tremor and Slip (ETS) are observed below the seismogenic sections of numerous subduction zones and several major strike-slip faults. These events have various characteristics that distinguish them from regular tectonic earthquakes. Here we show that a frictional fault in elastic solid with a region below the...Show More

Episodic tremor and slip on a frictional interface with critical zero weakening in elastic solid

Geophysical Journal International

Year: 2012 | Volume: 189, Issue: 2 | Journal Article |

Does interseismic strain localization near strike-slip faults result from boundary conditions or rheological structure?

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Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 1 | Journal Article |

Cited by: Papers (1)

Geodetic observations across most of the major strike-slip faults show an interseismic strain rate, which presents a sharp localization of elastic shear strain in the fault vicinity (20–60 km). The screw dislocation model of Savage & Burford is commonly used to fit these geodetic data and to retrieve the far field velocity and the locking depth. This model is very popular because of its inherent s...Show More

Does interseismic strain localization near strike-slip faults result from boundary conditions or rheological structure?

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Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 1 | Journal Article |

An enhanced image of the Pamir–Hindu Kush seismic zone from relocated earthquake hypocentres

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Geophysical Journal International

Year: 1998 | Volume: 134, Issue: 2 | Journal Article |

We determine the shape of the seismic zone in the Pamir–Hindu Kush region defined by [30–42° N, 68–78° E] by obtaining improved hypocentral locations with 90 per cent confidence limits of less than 30km (the depth error for¯ most of the earthquakes) of about 6000 shallow and intermediate-depth earthquakes. Available S and depth-phase arrival times are also used together with the P-wave arrival tim...Show More

An enhanced image of the Pamir–Hindu Kush seismic zone from relocated earthquake hypocentres

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Geophysical Journal International

Year: 1998 | Volume: 134, Issue: 2 | Journal Article |

High-resolution image of the North Chilean subduction zone: seismicity, reflectivity and fluids

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Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 3 | Journal Article |

We obtained high-precision locations for 5250 earthquakes in the Iquique segment of the northern Chilean subduction zone from two temporary local seismic networks around 21°S. A double seismic zone in the downgoing Nazca slab can be clearly identified. One band of seismicity is located at the plate interface and a second one 20–25km deeper in the oceanic mantle. It can be traced updip to uncommon...Show More

High-resolution image of the North Chilean subduction zone: seismicity, reflectivity and fluids

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Geophysical Journal International

Year: 2014 | Volume: 197, Issue: 3 | Journal Article |

Depth extent of damage zones around the central Calaveras fault from waveform analysis of repeating earthquakes

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Geophysical Journal International

Year: 2009 | Volume: 179, Issue: 3 | Journal Article |

We systematically investigate spatial variations of temporal changes and depth extent of damage zones along the Calaveras fault that ruptured during the 1984 Morgan Hill earthquake by the waveform analysis of 333 sets of repeating earthquakes. We use a sliding window waveform cross-correlation technique to measure traveltime changes in waveforms generated by each repeating cluster. We find clear t...Show More

Depth extent of damage zones around the central Calaveras fault from waveform analysis of repeating earthquakes

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Geophysical Journal International

Year: 2009 | Volume: 179, Issue: 3 | Journal Article |

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