Full-waveform seismic inversions based on minimizing the distance between observed and
predicted seismograms are, in principle, able to yield better-resolved earth models than …

水平叠加技术能够有效地压制随机噪声和多次波, 但是对于由于相邻道的噪声表现出相关性和
一致性而产生的某些相干干扰, 常规的叠加技术容易产生假的同相轴, 难以取得较高的信噪比 …

A wavelet-based method for the numerical simulation of acoustic and elastic wave
propagation is developed. Using a displacement-velocity formulation and treating spatial …

有限差分波动方程正演数值模拟主要是解决差分格式, 震源选择, 边界条件处理等问题.
这些问题的合理解决对得到正确和准确的波动方程数值解有着十分重要的作用 …

摘要本文利用第二代小波多尺度分解和快速变换的特点, 构造自适应计算网格.
对初始计算网格上的数值解进行第二代小波变换, 得到数值解对应的小波系数空间 …

The passage of seismic waves through highly heterogeneous media leads to significant
scattering of seismic energy and an apparent attenuation of seismic signals emerging from …

Localization of elastic waves in two-dimensional (2D) and three-dimensional (3D) media
with random distributions of the Lamé coefficients (the shear and bulk moduli) is studied …

The wavelet approach to numerical simulation of elastic wave propagation is applied to
models with localized heterogeneity, with significant contrasts with their surroundings. We …

We study localization of elastic waves in two-dimensional heterogeneous solids with
randomly distributed Lamé coefficients, as well as those with long-range correlations with a …

The paper presents a spectral analysis of wave propagation in bounded two-dimensional
elastic media discretized under assumptions of two selected local computational strategies …