Results 41 to 50 of about 2,183,650 (313)
Seismic noise between 0.003 Hz and 1.0 Hz and its classification
Progress in Earth and Planetary Science, 2023 It is now established that the primary microseism, the secondary microseisms, and the hum are the three main components of seismic noise in the frequency band from about 0.003 Hz to 1.0 Hz. Monthly averages of seismic noise are dominated by these signals
Toshiro Tanimoto, Aaron Anderson
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Applied SciencesPassive seismic interferometry is a technique that reconstructs virtual seismic records using ambient noise, such as random noise or microseisms. The ambient noise in passive seismic data contains rich information, with surface waves being useful for the
Xiaolong Li +3 more
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Ambient seismic noise in Cuba: analysis of broadband seismic stations in the Cuban Seismic Network
Dyna, 2022 This paper analyses seismic noise from broadband seismic stations within the Cuban National Seismic Service, focusing on location sites, soil or rock quality at installation sites and the impact of various factors on the noise signature of these seismic
Viana Poveda Brossard +1 more
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Signal Generated Seismic Noise [PDF]
Geophysical Journal International, 1966 Summary A typical seismic pulse generates a certain amount of incoherent wavemotion due to the scattering effect of small variations in the elastic properties of the Earth. This is recorded as ‘noise’ along with the main signal. When the problem is treated statistically, mean square amplitudes of the scattered waves, and fluctuations in amplitude and ...
J. A. Hudson, L. Knopoff
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Mine seismic adaptive noise suppression method based on VMD and GA-SVM
Meitan xuebaoThe seismic signals collected underground in coal mines often exhibit complex waveforms accompanied by significant noise interference, leading to a reduction in the accuracy of first arrival time picking of seismic signals and thereby impacting the ...
Bo WANG +4 more
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Geophysical Research Letters, 2019 The 2018 Kīlauea eruption was a complex event that included deformation and eruption at the summit and along the East Rift Zone. We use ambient seismic noise interferometry to measure time‐lapse changes in seismic velocity of the volcanic edifice prior ...
Gerrit Olivier +4 more
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A Bottom‐Up Design Framework for Multifunctional Lattice Metamaterials
Advanced Science, EarlyView.This study introduces a generative AI framework for designing multifunctional lattice metamaterials. The method combines 3D Gaussian voxel generation with deep learning, enabling greater design freedom and structural performance. The optimized lattice metamaterials achieve enhanced energy absorption by 40–200% compared to conventional structures and ...
Zongxin Hu +13 more
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A U-Net Based Multi-Scale Deformable Convolution Network for Seismic Random Noise Suppression
Remote Sensing, 2023 Seismic data processing plays a key role in the field of geophysics. The collected seismic data are inevitably contaminated by various types of noise, which makes the effective signals difficult to be accurately discriminated.
Haixia Zhao +3 more
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Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics
Advanced Science, EarlyView.Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
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AMBIENT SEISMIC NOISE FOOTPRINTS AND SPECTRA IN THE MIDDLE BENUE TROUGH, NIGERIA
Earth Science Malaysia, 2019 Ambient noise was analysed from a two-dimensional (2D) seismic data acquired in the Middle Benue Trough, Nigeria for the purpose of characterizing the ambient seismic noise.
Clifford N. C. Mbachi +5 more
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