Results 31 to 40 of about 908 (240)

Geomechanic modeling of seismic emission due to fracture growth - connection to microseismic source mechanisms

open access: yesGeofísica Internacional
We present an approach to study the rock failure mechanisms due to fracture growth or activation. Our approach includes a series of numerical geomechanic simulations of an incremental rock failure (fracture growth) accounting for elastic wavefield ...
Sergey Yaskevich   +2 more
doaj   +1 more source

Instrumental seismicity of the Amatrice earthquake epicentral area: a review

open access: yesAnnals of Geophysics, 2016
This study presents a review of the instrumental seismicity of the Norcia-Amatrice area (central Italy) where a still on-going seismic sequence started on August 24th 2016 with a Mw6.0 earthquake.
Maria Grazia Ciaccio
doaj   +1 more source

Mathematical modeling of wave fields in layered media with additional stresses

open access: yesГеофизический журнал, 2012
We consider the model of a vertically inhomogeneous medium, when one or more layers are under more stress. We analyzed the results of research of influence of hydrostatic pressure act-ing in one of the layers of horizontally-layered structure of the wave
D. V. Malitsky   +2 more
doaj   +1 more source

GPU-acceleration 3D rotated-staggered-grid solutions to microseismic anisotropic wave equation with moment tensor implementation

open access: yesInternational Journal of Mining Science and Technology, 2023
To improve the accuracy of microseismic inversion, seismic anisotropy and moment tensor source should be carefully considered in the forward modelling stage. In this study, 3D microseismic anisotropy wave forward modelling with a moment tensor source was
Jing Zheng   +3 more
doaj   +1 more source

Is the seismic moment tensor ambiguous at a material interface? [PDF]

open access: yesGeophysical Journal International, 2013
S U M M A R Y The moment tensors are unique and describe the body force equivalents of rupture processes in any medium including faulting at a material interface, defined as the contact of two media with non-zero velocity or density contrasts. From a practical point of view, however, the moment tensor inversion of sources near or at a material ...
openaire   +1 more source

Seismic moment tensor and focal mechanism for earthquake of February 22, 2024 in eastern Slovakia (12:54:15 UTC, 21.75E°E, 49.03°N, depth 9 km, ML3.0)

open access: yesГеофизический журнал
The accuracy of the focal mechanism solution can depend very significantly on the number of stations used, especially in the case of weak earthquakes and sparse networks.
D.V. Malytskyy   +9 more
doaj   +1 more source

On the Depth of Earthquakes in the Delaware Basin: A Case Study along the Reeves–Pecos County Line

open access: yesThe Seismic Record, 2022
Increased rates of seismicity in the Delaware basin, Texas, accompanying unconventional petroleum development have created intensive interest in determining their cause.
Yixiao Sheng   +2 more
doaj   +1 more source

English teachers' journeys since the 2020 Iteration of Black Lives Matter

open access: yesBritish Educational Research Journal, EarlyView.
Abstract The 2020 resurgence of Black Lives Matter (BLM) mobilised students in England to demand greater representation of racially minoritised voices in English curriculums—a call highlighted by stark inequity: just 1.5% of GCSE texts studied are by racially minoritised authors, despite racially minoritised students comprising 38.0% of the student ...
Adrian Fernandes
wiley   +1 more source

MTfit: A Bayesian Approach to Seismic Moment Tensor Inversion [PDF]

open access: yesSeismological Research Letters, 2018
MTfit is a Python module for Bayesian moment tensor source inversion of earthquake seismic data using polarities, amplitudes, or amplitude ratios. It can solve for double‐couple or full moment tensor solutions, taking into account uncertainties in polarities, takeoff angles of the rays from the source to the receiver, and amplitudes.
Pugh, DJ, White, RS
openaire   +1 more source

Deep Compressed Seismic Learning for fast location and moment tensor inferences with natural and induced seismicity

open access: yesScientific Reports, 2022
Fast detection and characterization of seismic sources is crucial for decision-making and warning systems that monitor natural and induced seismicity. However, besides the laying out of ever denser monitoring networks of seismic instruments, the incorporation of new sensor technologies such as Distributed Acoustic Sensing (DAS) further challenges our ...
Ismael Vera Rodriguez, Erik B. Myklebust
openaire   +3 more sources

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