Results 61 to 70 of about 14,685 (168)

Synthetic tensor gauge fields

Physical Review Research
Synthetic gauge fields have provided physicists with a unique tool to explore a wide range of fundamentally important phenomena. However, most experiments have focused on synthetic vector gauge fields.
Shaoliang Zhang, Chenwei Lv, Qi Zhou
doaj   +1 more source

Identification of Hydraulic Fracture Orientation from Ground Surface Using the Seismic Moment Tensor

Georesursy, 2017
Microseismic monitoring from ground surface is applied in the development of hard-to-recover reserves, especially in the process of hydraulic fracturing (HF).
E.V. Birialtcev, V.A. Ryzhov, S.A. Feofilov, I.R. Sharapov, M.R. Kamilov, D.A. Ryzhov, E.V. Mokshin   +6 more
doaj   +1 more source

Broad-band moment tensor inversion from single station, regional surface waves for the 1990, NW-Iran earthquake sequence

Annals of Geophysics, 1994
e present a method for the inversion of complete waveforms in the 5-30 mHz frequency band for moment tensor determination. The method is based on the calibration of phase and group velocity dispersion curves for Rayleigh and Love fundamental modes to ...
B. Palombo, L. Malagnini, D. Giardini, E. Boschi   +3 more
doaj   +1 more source

Unveiling midcrustal seismic activity at the front of the Bolivian altiplano, Cochabamba region

Seismica
Located in the heart of the Bolivian orocline, the Cochabamba department and its two million inhabitants are exposed to frequent seismic activity. However, the tectonic structures causing these earthquakes remain poorly identified.
Gonzalo Antonio Fernandez M, Benoit Derode, Laurent Bollinger, Bertrand Delouis, Mayra Nieto, Felipe Condori, Nathan Sarret, Jean Letort, Stephanie Godey, Mathilde Wimez, Teddy Griffiths, Walter Arce   +11 more
doaj   +1 more source

The 2024–2025 seismic sequence in the Santorini-Amorgos region: Insights into volcano-tectonic activity through high-resolution seismic monitoring

Seismica
The 2024–2025 seismic sequence in the Santorini-Amorgos region demonstrates a complex evolution revealing the interaction between tectonic and volcanic processes.
Ioannis Fountoulakis, Christos P. Evangelidis   +1 more
doaj   +1 more source

Moment-SOS relaxations for moment and tensor recovery problems

Numerical Algebra, Control and Optimization
This paper studies moment and tensor recovery problems whose decomposing vectors are contained in some given semialgebraic sets. We propose Moment-SOS relaxations with generic objectives for recovering moments and tensors, whose decomposition lengths are expected to be low.
Huang, Lei, Nie, Jiawang, Wang, Jiajia
openaire   +2 more sources

Ground motion characteristics induced by high-magnitude events with different source mechanisms of longwall mining

Geomatics, Natural Hazards & Risk
Rockbursts have become one of the most serious hazards in underground mines worldwide. While the characteristics of ground motions before rockbursts (or high-magnitude events (HMEs)) have not been studied.
Yaoqi Liu, Anye Cao, Geng Li, Xu Yang, Changbin Wang, Liyuan Yu, Minghe Ju   +6 more
doaj   +1 more source

Microseismic moment-tensor inversion

, 2011
It is common practice in the oil and gas industry to use a single vertical well with limited number of geophones to monitor the microseismicity induced by hydraulic fracture treatment. In this thesis, I have employed a synthetic and stochastic modeling approach to investigate the effects of monitoring geometry and noise on inverting recorded P- and S ...
openaire   +2 more sources

Tensile–shear microcrack source mechanism and stress inversion methods of coal–rock

Meitan xuebao
Precise monitoring and quantitative inversion of coal–rock fracture geometries and stress‐field distributions are regarded as fundamental scientific prerequisites for elucidating the evolution of rockburst processes and associated failure mechanisms, and
Enyuan WANG, Li ZHANG, Xiaoran WANG, Xiaofei LIU, Nan LI   +4 more
doaj   +1 more source

Complex Martinique Intermediate‐Depth Earthquake Reactivates Early Atlantic Break‐Up Structures

Geophysical Research Letters
Earthquakes that rupture several faults occur frequently within the shallow lithosphere but are rarely observed for intermediate‐depth events (70–300 km). On 29 November 2007, the Mw7.4 Martinique earthquake struck the Lesser Antilles Island Arc near the
Mike Lindner, Andreas Rietbrock, Lidong Bie, Ya‐Jian Gao, Saskia Goes, Michael Frietsch   +5 more
doaj   +1 more source