Results 1 to 10 of about 79,658 (267)

Depth Migration Based on Two-Way Wave Equation to Image OBS Multiples: A Case Study in the South Shetland Margin (Antarctica) [PDF]

Geofluids, 2020
With the development of marine seismic exploration, the ocean bottom seismometer (OBS) as a new seismic acquisition technology has been widely concerned.
Sha Song, Jiachun You, Qing Cao, Bin Chen, Xiaomeng Cao   +4 more
doaj   +2 more sources

$$\beta$$ -Fractional $$(n+1)$$ -dimensional generalized KP model: nonlinear dynamical behaviors, analytical wave structures, bifurcation, and sensitivity analysis [PDF]

Scientific Reports
This study introduces an integrable generalization of the Kadomtsev–Petviashvili model in arbitrary spatial dimensions. The Kadomtsev–Petviashvili equation serves as a fundamental framework in describing a wide range of physical phenomena, including ...
Ulviye Demirbilek, Ali Danladi, Arzu Akbulut, Salah Boulaaras, Karim K. Ahmed   +4 more
doaj   +2 more sources

One-Way Vibration Absorber

Acoustics, 2022
A vibration absorber consisting of a one-dimensional waveguide with a reflectionless termination extracts vibrational energy from a structure that is to be damped.
Oskar Bschorr, Hans-Joachim Raida
doaj   +1 more source

One-Way Wave Operator

Acoustics, 2022
The second-order partial differential wave Equation (Cauchy’s first equation of motion), derived from Newton’s force equilibrium, describes a standing wave field consisting of two waves propagating in opposite directions, and is, therefore, a “two-way ...
Hans-Joachim Raida
doaj   +1 more source

Factorized One-Way Wave Equations

Acoustics, 2021
The method used to factorize the longitudinal wave equation has been known for many decades. Using this knowledge, the classical 2nd-order partial differential Equation (PDE) established by Cauchy has been split into two 1st-order PDEs, in alignment with
Oskar Bschorr, Hans-Joachim Raida
doaj   +1 more source

Spherical One-Way Wave Equation

Acoustics, 2021
The coordinate-free one-way wave equation is transferred in spherical coordinates. Therefore it is necessary to achieve consistency between gradient, divergence and Laplace operators and to establish, beside the conventional radial Nabla operator ∂Φ/∂r ...
Oskar Bschorr, Hans-Joachim Raida
doaj   +1 more source

Variety interaction between k-lump and k-kink solutions for the generalized Burgers equation with variable coefficients by bilinear analysis

Results in Physics, 2021
In this paper, we study the generalized Burgers equation with variable coefficients which is considered in soliton theory and generated by considering the Hirota bilinear operators. We retrieve some novel exact analytical solutions, including 2-lump-type
Ziqiang Li, Jalil Manafian, Natig Ibrahimov, Afandiyeva Hajar, Kottakkaran Sooppy Nisar, Wasim Jamshed   +5 more
doaj   +1 more source

Reverse Time Migration Based on the Pseudo-Space-Domain First-Order Velocity-Stress Acoustic Wave Equation

Frontiers in Earth Science, 2021
Reverse time migration (RTM) is an ideal seismic imaging method for complex structures. However, in conventional RTM based on rectangular mesh discretization, the medium interfaces are usually distorted.
Xiaobo Zhang, Xiaobo Zhang, Xiaobo Zhang, Xiaobo Zhang, Xiutian Wang, Baohua Liu, Baohua Liu, Peng Song, Jun Tan, Chuang Xie   +9 more
doaj   +1 more source

One-Way Wave Equation Derived from Impedance Theorem

Acoustics, 2020
The wave equations for longitudinal and transverse waves being used in seismic calculations are based on the classical force/moment balance. Mathematically, these equations are 2nd order partial differential equations (PDE) and contain two solutions with
Oskar Bschorr, Hans-Joachim Raida
doaj   +1 more source

Finite Difference Pre-Stack Depth Migration of One-Way Wave Equation in Isotropic Visco-Acoustic Media of a Ray-Centered Coordinate System

Energies, 2022
In seismic exploration, obtaining accurate bandwidth of the reflected signal is essential for determining seismic resolution. A portion of the stored energy is attenuated during signal propagation, narrowing the received seismic signal bandwidth ...
Bohan Zhang, Huazhong Wang
doaj   +1 more source