Simulation of wave propagation in linear thermoelastic media

doi:10.1190/GEO2018-0448.1

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Simulation of wave propagation in linear thermoelastic media
	Carcione, Jose M.1,2; Wang, Zhi-Wei 3,4; Ling, Wenchang 2; Salusti, Ettore 5; Ba, Jing 2; Fu, Li-Yun 6
刊名	GEOPHYSICS
	2019
卷号	84 期号:1 页码:T1-T11
ISSN号	0016-8033
DOI	10.1190/GEO2018-0448.1
英文摘要	We have developed a numerical algorithm for simulation of wave propagation in linear thermoelastic media, based on a generalized Fourier law of heat transport in analogy with a Maxwell model of viscoelasticity. The wavefield is computed by using a grid method based on the Fourier differential operator and two time-integration algorithms to cross-check solutions. Because the presence of a slow quasistaticmode (the thermal mode) makes the differential equations stiff and unstable for explicit time-stepping methods, first, a second-order time-splitting algorithm solves the unstable part analytically and a Runge-Kutta method the regular equations. Alternatively, a first-order explicit Crank-Nicolson algorithm yields more stable solutions for low values of the thermal conductivity. These time-stepping methods are second-and first-order accurate, respectively. The Fourier differential provides spectral accuracy in the calculation of the spatial derivatives. The model predicts three propagation modes, namely, a fast compressional or (elastic) P-wave, a slow thermal P diffusion/wave (the T-wave), having similar characteristics to the fast and slow P-waves of poroelasticity, respectively, and an S-wave. The thermal mode is diffusive for low values of the thermal conductivity and wave-like for high values of this property. Three velocities define the wavefront of the fast P-wave, i.e., the isothermal velocity in the uncoupled case, the adiabatic velocity at low frequencies, and a higher velocity at high frequencies.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010303] ; Major State Research Development Program of China[2016YFC0601101] ; Specially-Appointed Professor Program of Jiangsu Province, China ; Cultivation Program of "111" Plan of China[BC2018019]
WOS关键词	ATTENUATION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000457601800056
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major State Research Development Program of China ; Major State Research Development Program of China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Cultivation Program of "111" Plan of China ; Cultivation Program of "111" Plan of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major State Research Development Program of China ; Major State Research Development Program of China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Cultivation Program of "111" Plan of China ; Cultivation Program of "111" Plan of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major State Research Development Program of China ; Major State Research Development Program of China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Cultivation Program of "111" Plan of China ; Cultivation Program of "111" Plan of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major State Research Development Program of China ; Major State Research Development Program of China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Specially-Appointed Professor Program of Jiangsu Province, China ; Cultivation Program of "111" Plan of China ; Cultivation Program of "111" Plan of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90502]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Ba, Jing
作者单位	1.Ist Nazl Oceanog & Geofis Sperimentale OGS, Borgo Grotta Gigante 42c, I-34010 Trieste, Italy 2.Hohai Univ, Sch Earth Sci & Engn, Nanjing, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 5.Univ Roma La Sapienza, Dept Phys, Rome, Italy 6.China Univ Petr East China, Sch Geosci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Carcione, Jose M.,Wang, Zhi-Wei,Ling, Wenchang,et al. Simulation of wave propagation in linear thermoelastic media[J]. GEOPHYSICS,2019,84(1):T1-T11.
APA	Carcione, Jose M.,Wang, Zhi-Wei,Ling, Wenchang,Salusti, Ettore,Ba, Jing,&Fu, Li-Yun.(2019).Simulation of wave propagation in linear thermoelastic media.GEOPHYSICS,84(1),T1-T11.
MLA	Carcione, Jose M.,et al."Simulation of wave propagation in linear thermoelastic media".GEOPHYSICS 84.1(2019):T1-T11.