Results 81 to 90 of about 19,474 (278)

Identification of Environmental Noise Traces in Seismic Recordings Using Vision Transformer and Mel-Spectrogram

open access: yesApplied Sciences
Environmental noise is inevitable during seismic data acquisition, with major sources including heavy machinery, rivers, wind, and other environmental factors. During field data acquisition, it is important to assess the impact of environmental noise and
Qianlong Ding   +3 more
doaj   +1 more source

Time-lapse seismic attenuation as a tool for monitoring hydrocarbons and CO2 in geological materials [PDF]

open access: yes, 2011
Both laboratory experiments and theoretical models have shown seismic attenuation to be sensitive to various petrophysical properties of rock and pore fluids, making attenuation a potentially useful time-lapse attribute to measure and interpret through ...
Blanchard, Thomas David
core  

Characterization of shallow geology by high frequency seismic noise tomography [PDF]

open access: yes, 2008
To study the applicability of the passive seismic interferometry technique to near-surface geological studies, seismic noise recordings from a small scale 2-D array of seismic stations were performed in the test site of Nauen (Germany).
Picozzi, Matteo   +11 more
core   +1 more source

Concrete in architecture: Redefining form, space, function, and insights from bibliometric analysis

open access: yesStructural Concrete, EarlyView.
Abstract Concrete has become a cornerstone in architectural and engineering innovation, as it seamlessly integrates structural performance with artistic expression. Its evolution from ancient opus caementicium to contemporary ultra‐high‐performance concrete illustrates its adaptability to the change in technological, environmental, and design paradigms.
Mouhcine Benaicha   +2 more
wiley   +1 more source

Research on Seismic Noise Attenuation Method Based on Wavelet Transform and f-x-VMD

open access: yesIEEE Access
Random noise in seismic data seriously affects velocity analysis and migration imaging quality. Effective attenuation of random noise is an important link in seismic data processing.
Chenhao Lian, Wei Chen
doaj   +1 more source

Seismic random noise attenuation using modified wavelet thresholding

open access: yesAnnals of Geophysics, 2017
In seismic exploration, random noise deteriorates the quality of acquired data. This study analyzed existing denoising methods used in seismic exploration from the perspective of random noise. Wavelet thresholding offers a new approach to reducing random
Qi-sheng Zhang   +5 more
doaj   +1 more source

Development of a State-Wide Velocity Profile in Oklahoma Using Ambient Noise Seismic Tomography [PDF]

open access: yes, 2018
Earthquakes have been a growing concern in the state of Oklahoma in the last several years and as a result, prediction of the ground motion, understanding of subsurface geological structure, and the estimation of accurate earthquake location are of ...
Marsh, Stephen
core  

Experimental investigation of reinforced concrete members subjected to reversed cyclic axial loading

open access: yesStructural Concrete, EarlyView.
Abstract This paper presents an experimental campaign of five reinforced concrete members subjected to cyclic axial loading alternating between tension and compression. Fiber optical sensors and digital image correlation, in combination with automated crack detection and measurement, were used to investigate, among other aspects, the development of ...
Simon Karrer   +2 more
wiley   +1 more source

Deep Shear Waves Model of the Venice Lagoon from Seismic Noise Interferometry [PDF]

open access: yes
openThe objective of my thesis is to develop a deep shear wave model of the Venice Lagoon using seismic noise interferometry. This method involves time cross-correlation of seismic noise recorded between two stations: one on the island of San Servolo and
DE MARCHI, SILVIA
core  

Seismic Ambient Noise Analysis in Southern Italy [PDF]

open access: yes, 2012
We studied the ambient noise recorded at Irpinia Seismic Network (ISNet), a seismic network installed along the Campania–Lucania Apenninic chain (southern Italy), with the aim of characterizing the noise spectrum for each station as a function of time ...
A. Bobbio   +5 more
core   +1 more source

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