Computational Analysis of Seismic Waves Attenuation Caused by Porosity Variability in a Fluid-Saturated Porous Model of Thawing Permafrost

被引：0

作者：

Reshetova, Galina ^{[1
]}

Novikov, Mikhail ^{[2
]}

Romenski, Evgeniy ^{[3
]}

机构：

[1] Inst Computat Math & Math Geophys SB RAS, Novosibirsk 630090, Russia

[2] Trofimuk Inst Petr Geol & Geophys SB RAS, Novosibirsk 630090, Russia

[3] Sobolev Inst Math SB RAS, Novosibirsk 630090, Russia

来源：

COMPUTATIONAL SCIENCE AND ITS APPLICATIONS-ICCSA 2024 WORKSHOPS, PT III | 2024年 / 14817卷

基金：

俄罗斯科学基金会;

关键词：

Wave field simulation; Fluid saturated porous medium; Quality factor; Staggered grid finite difference scheme; ELASTIC WAVES; PROPAGATION; MEDIA; VELOCITY;

D O I：

10.1007/978-3-031-65238-7_22

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A computational model for wave fields simulation in a saturated deformable porous medium is presented. The governing differential equations of the model are derived from a general Symmetric Hyperbolic Thermodynamically Compatible (SHTC) two-phase model of saturated porous medium and form a linear PDE system allowing the application of an efficient finite difference method on a staggered grid. A series of numerical test problems showed a strong dependence of wave attenuation on porosity and relaxation time coefficient. It was also shown that the constitutive equations of the SHTC give a constant value of the quality factor over a range of seismic frequencies, making it possible to use the SHTC model to develop seismic methods for monitoring permafrost thaw.

引用

页码：321 / 333

页数：13

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