Results 1 to 10 of about 10,493 (257)
Analysis of the characteristics of blasting seismic wave induced by explosive blasting with different coupling medium [PDF]
Scientific ReportsTo clarify the influence of blast-induced seismic wave characteristics due to borehole coupling medium changes is an important guiding significance for blast vibration control.
Tong Li +5 more
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Full wave seismic exploration technology
Petroleum Exploration and Development, 2022 Reflected wave seismology has the following defects: the acquisition design is based on the assumption of layered media, the signal processing suppresses weak signals such as diffracted wave and scattered wave, and the seismic wave band after the image ...
Dong’an LI, Lixin QI
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Ambient seismic wave field. [PDF]
Proc Jpn Acad Ser B Phys Biol Sci, 2017 The ambient seismic wave field, also known as ambient noise, is excited by oceanic gravity waves primarily. This can be categorized as seismic hum (1-20 mHz), primary microseisms (0.02-0.1 Hz), and secondary microseisms (0.1-1 Hz). Below 20 mHz, pressure fluctuations of ocean infragravity waves reach the abyssal floor.
Nishida K.
europepmc +4 more sources
Influence of gradient wave velocity structure of 3–D Gaussian–shaped rocky hills on seismic wave propagation [PDF]
Scientific ReportsThe seismic response of terrain sites has long been a hot topic in the field of geophysics and earthquake engineering over decades, which plays a critical role in evaluating the seismic safety of major engineering in mountain areas.
Qingquan Fan, Xiaojun Li, Suyang Wang
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A near-surface seismic scattered wave separation method
Petroleum Exploration and Development, 2014 Considering that near-surface scattered waves could not be suppressed by conventional denoise method, this paper analyzes the characteristics of scattered waves and achieves the near-surface scattered wave separation by the seismic interferometry theory.
Jixiang XU, B F McLean, Xuejuan SONG
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Study of Chaotic and Regular Modes of the Fractional Dynamic System of Selkov [PDF]
EPJ Web of Conferences, 2021 The paper investigates the dynamic modes of the Sel’kov fractional self-oscillating system in order to simulate the interaction of cracks. The spectra of the maximum Lyapunov exponents, constructed depending on the parameters of the dynamic system, are ...
Parovik Roman +2 more
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Seismic attenuation estimation using multivariate variational mode decomposition
Frontiers in Earth Science, 2022 A seismic attenuation estimation approach is proposed based on multivariate variational mode decomposition (MVMD). MVMD, as a multivariable or multichannel signal processing tool, can extract several predefined multivariable modulation oscillations from ...
Jun-Zhou Liu +9 more
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Вестник Дагестанского государственного технического университета: Технические науки, 2022 Objective. The purpose of the study is to determine the coordinates of the earthquake hypocenter with the simultaneous determination of the seismic wave velocity.Method.
Yu. A. Sidorkina, T. G. Aslanov
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Shock and Vibration, 2021 The buried oil and gas pipeline is a linear structure with infinite length. In the shaking table test of its seismic response, it is necessary to input the spatially related multipoint seismic wave considering the propagation characteristics of ground ...
Jian-Bo Dai +3 more
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Model of Seismic Wave Field Excited by Horizontally Distributed Charge
Shock and Vibration, 2021 The amplitude-frequency characteristics of seismic wave field excited by an explosive source can directly affect the accuracy of seismic prospecting.
Xu Qian, Wang Zhong-Qi
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