Modeling of Elastic and Electrical Properties of Solid-Liquid Rock System with Fractal Microstructure
- 作者：Kozlovskaya ; E. ; Hjelt ; S.-E.
- 刊名：Physics and Chemistry of the Earth ; Part A ; Solid Earth and Geodesy
- 出版年：2000
- 期刊代码：70_14641895
- 类别：ear
- 出版时间：2000
- 卷：25
- 期：2
- 页码：195-200
- 文件大小：478 K
摘要
In the present paper we study the possibility of using joint quantitative interpretation of experimental electromagnetic and seismic data for lithospheric studies and to establish the situations in which the joint inversion of seismic and EM experimental data is possible. For this purpose a theoretical model of a solid-liquid rock mixture with fractal structure of grain-to-grain contact (Bahr, 1997; Spangenberg, 1998) was used to investigate dependence of elastic and electrical properties on rock microstructure. The electrical conductivity and seismic wave velocity were estimated by Monte-Carlo modeling for low porosity water-saturated crystalline rock and olivine-partially molten basalt system. It was shown that both elastic properties and conductivity of solid-liquid rock mixture depend non-linearly upon two main common factors, i.e. amount of liquid phase and fractal rock microstructure that is controlled by the degree of contact between grains. The dependence of rock physical macroproperties (seismic velocities, electrical conductivity and seismic and electrical anisotropy) upon these two main factors makes it possible to construct algorithms for joint quantitative interpretation of experimental seismic and electromagnetic data.