Results 31 to 40 of about 145,917 (290)

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

Features of processing of marine seismic observations using finite-difference full-wave migration

open access: yesГеофизический журнал, 2013
Features and basic principles of plotting the graph of marine seismic observations processing with application of original method of finite-difference total wave migration of the sum of central middle point, which is more stabile in case of investigation
A. O. Verpahovskaya   +2 more
doaj   +1 more source

Elastic properties of silicate melts: Implications for low velocity zones at the lithosphere-asthenosphere boundary. [PDF]

open access: yes, 2017
Low seismic velocity regions in the mantle and crust are commonly attributed to the presence of silicate melts. Determining melt volume and geometric distribution is fundamental to understanding planetary dynamics.
Clark, Alisha N, Lesher, Charles E
core   +2 more sources

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

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

Field Tests for Generating Source System and Picking the Seismic Shear Waves to Meet the Engineering Purposes Requirements. [PDF]

open access: yesKirkuk Journal of Science, 2019
Many seismic field tests were carried for the designed and modified seismic apparatuses using to generate seismic shear waves. These apparatus includes: "wooden plank" horizontal traction shear wave source, and a modified geophone for picking the SH-Wave
Muhana Ahmed
doaj   +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

Temporal and spatial evolution law of characteristic parameters for coal rock fracture induced seismic wave

open access: yesJournal of Industrial Safety
Quantitative study of the temporal and spatial evolution of seismic wave characteristic parameters is of great significance for accurately identifying the P-wave and S-wave in seismic waves and improving the accuracy in localizing microseismic events ...
Zhongquan Kang   +5 more
doaj   +1 more source

Study on Seismic Attenuation Based on Wave-Induced Pore Fluid Dissolution and Its Application

open access: yesApplied Sciences, 2022
Seismic wave attenuation is affected by wave-induced pore fluid dissolution. The mechanism of wave-induced pore fluid dissolution is the mutual dissolution between different fluids caused by pore fluid pressure.
Ziqi Jin   +3 more
doaj   +1 more source

Application of wavelet analysis in tool wear evaluation using image processing method [PDF]

open access: yes, 2018
Tool wear plays a significant role for proper planning and control of machining parameters to maintain the product quality. However, existing tool wear monitoring methods using sensor signals still have limitations.
Lee, Woon Kiow   +5 more
core   +1 more source

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