Results 111 to 120 of about 1,362,837 (282)

Nonlinear Moment-Tensor Inversion of Repetitive Long-Periods Events Recorded at Pacaya Volcano, Guatemala

Frontiers in Earth Science, 2018
Detailed models of low-frequency seismicity at volcanoes provide insights into conduit structure and dynamics of magmatic systems. Many active volcanoes produce repetitive seismic events, but these are often too small to model on their own.
Federica Lanza, Federica Lanza, Gregory P. Waite   +2 more
doaj   +1 more source

Global seismicity of 1979: centroid-moment tensor solutions for 524 earthquakes

Physics of the Earth and Planetary Interiors, 1987
Abstract Centroid-moment tensor solutions are presented for 524 earthquakes that occurred during 1979.
Dziewonski, A, Ekstrom, G, Franzen, J, Woodhouse, J   +3 more
openaire   +2 more sources

The unusual seismic activity from 2021 to 2024 in eastern Austria: insights from seismic sequences relocation and moment tensor inversion

© Seismological Society of AmericaFrom 2021 to 2024, unusually strong seismic activity, including multiple sequences with five 3.8
Lenhardt, Wolfgang, Hausmann, Helmut, Papí Isaba, Maria del Puy, Mattesini, Maurizio, Cesca, Simone, Petersen, Gesa, Buforn Peiró, Vicenta María Elisa   +6 more
core   +1 more source

Swedish National Seismic Network

, 1904
The Swedish National Seismic Network (SNSN) started with the installation of a Wiechert seismograph in Uppsala in 1904. Since 1998 the SNSN is a part of the Department of Earth Sciences at Uppsala University.
Swedish National Seismic Network
core   +1 more source

Seismic evaluation of the southbound Stellenberg Interchange Bridge, B5593, in South Africa

Structural Concrete, EarlyView.
Abstract This study presents a nonlinear finite element assessment of the seismic vulnerability of Bridge B5593, located in the south‐western region of South Africa. Previous evaluations identified a high likelihood of column failure; however, these were based on linear material models incapable of capturing damage evolution.
Wandie Olivier, Trevor Haas
wiley   +1 more source

Energy budgeting of laboratory hydraulic fracturing in granite with different viscosity injection fluids

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
In this study, we investigated the source parameters of microseismicity detected during laboratory hydraulic fracturing (HF) of granite conducted with high- (gear oil/1000 cP) and low- (water/1 cP) viscosity injection fluids.
A. Butt, A. Hedayat, O. Moradian
doaj   +1 more source

Characteristics of seismic acoustic emission of loaded rock containing pre-existing cracks based on the discrete element simulation

Meitan kexue jishu
To further elucidate the mechanism of acoustic emission (AE) response when a fractured rock is compressed, a new method for calculating the AE characteristics from the perspective of relative particle motion based on the moment tensor theory in ...
Wendong ZHOU, Yanwei CUI, Xiaoran WANG, Li CHEN, Ke XU, Gehui REN, Hao WANG, Leilei SI   +7 more
doaj   +1 more source

Focal Mechanisms of Mw 6.3 Aftershocks from Waveform Inversions, Phayao Fault Zone, Northern Thailand

International Journal of Geophysics, 2017
The focal mechanisms of Mw 6.3 aftershocks, Chiang Rai Province, Northern Thailand, were determined by using a multistation waveform inversion. Three aftershocks were selected and their waveforms were inverted for moment tensor calculation.
Kasemsak Saetang
doaj   +1 more source

A confidence parameter for seismic moment tensors [PDF]

Geophysical Journal International, 2016
Walter Tape, Carl Tape
openaire   +1 more source

Kinematics‐based model for shear capacity assessment of unreinforced interior beam–column joints

Structural Concrete, EarlyView.
Abstract This study presents a kinematics‐based model for assessing the shear strength of reinforced concrete interior beam–column joints without transverse reinforcement. The proposed framework is built on first principles—kinematics, equilibrium, and constitutive relations—and explicitly models discrete cracks by introducing kinematic parameters such
Daniele Arcuri, Lorenza Petrini, Boyan I. Mihaylov   +2 more
wiley   +1 more source