Results 41 to 50 of about 2,984,023 (326)

Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota [PDF]

open access: yes, 2010
An array of seismometers is being developed at the Sanford Underground Laboratory, the former Homestake mine, in South Dakota to study the properties of underground seismic fields and Newtonian noise, and to investigate the possible advantages of ...
  +45 more
core   +4 more sources

Wavefield-reconstruction-based full waveform inversion on noisy data in seismic exploration

open access: yesFrontiers in Earth Science
Full waveform inversion (FWI) is commonly used in seismic exploration to calculate parameters of the medium, such as velocity, from the signal as it passes through the medium.
Yuwei Yu   +11 more
doaj   +1 more source

Validation of Rayleigh Wave Theoretical Formulation with Single-Station Rotational Records of Mine Tremors in Lower Silesian Copper Basin

open access: yesSensors, 2021
The classical Rayleigh surface rotational wave in terms of its theoretical notation and, resulting from this, properties associated with the induced seismic phenomena in mines are presented.
Witold Pytel   +3 more
doaj   +1 more source

Seismic Waveguide of Metamaterials

open access: yes, 2012
We have developed a new method of an earthquake-resistant design to support conventional aseismic designs using acoustic metamaterials. We suggest a simple and practical method to reduce the amplitude of a seismic wave exponentially.
Beranek L. L.   +4 more
core   +1 more source

Influence of apparent wave velocity on seismic performance of a super-long-span triple-tower suspension bridge

open access: yesAdvances in Mechanical Engineering, 2015
As one of the main characteristics of seismic waves, apparent wave velocity has great influence on seismic responses of long-span suspension bridges. Understanding these influences is important for seismic design.
Hao Wang   +4 more
doaj   +1 more source

Seismic forward and inverse simulation in a tight reservoir model of loess plateau region

open access: yesPetroleum Exploration and Development, 2017
To find out the seismic wave field propagation principles in loess plateau near surface of the Ordos Basin and the seismic response characteristics of tight oil reservoirs, this study established a geological-geophysical model under the real conditions ...
Daxing WANG   +5 more
doaj   +1 more source

The 1980, 1997 and 1998 Azores earthquakes and its seismotectonic implications [PDF]

open access: yes, 2007
We have studied the focal mechanisms of the 1980, 1997 and 1998 earthquakes in the Azores region from body-wave inversion of digital GDSN (Global Digital Seismograph Network) and broadband data. For the 1980 and 1998 shocks, we have obtained strike– slip
Bezzeghoud, M.   +4 more
core   +1 more source

Traveling Wave Resonance and Simplified Analysis Method for Long-Span Symmetrical Cable-Stayed Bridges under Seismic Traveling Wave Excitation

open access: yesShock and Vibration, 2014
The seismic responses of a long-span cable-stayed bridge under uniform excitation and traveling wave excitation in the longitudinal direction are, respectively, computed.
Zhong-ye Tian, Meng-lin Lou
doaj   +1 more source

Source and dynamics of a volcanic caldera unrest : Campi Flegrei, 1983–84 [PDF]

open access: yes, 2017
Acknowledgements We thank Tiziana Vanorio, Antonella Amoruso, Luca Crescentini, Nicholas Rawlinson, Yasuko Takei, and David Cornwell for the valuable suggestions regarding the methodology and interpretation.
Castellano, Mario   +7 more
core   +1 more source

Fast iterative method for seismic wave travel time calculation under undulating surface conditions

open access: yesFrontiers in Environmental Science, 2022
Seismic wave travel time is an important seismic attribute information and is widely used in various seismic forward and inversion methods, including seismic migration imaging, seismic tomography, seismic wave forward modeling and other core seismic data
Meng Li   +9 more
doaj   +1 more source

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