COMPUTERIZED GEOPHYSICAL TOMOGRAPHY

被引：440

作者：

DINES, KA ^{[1
]}

LYTLE, RJ ^{[1
]}

机构：

[1] UNIV CALIF LAWRENCE LIVERMORE LAB,LIVERMORE,CA 94550

来源：

PROCEEDINGS OF THE IEEE | 1979年 / 67卷 / 07期

关键词：

D O I：

10.1109/PROC.1979.11390

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Computerized tomography is used as an aid in geophysical exploration. With this method, detailed pictures of electromagnetic properties in the regions between pairs of boreholes can be reconstructed. The spatial distribution of attenuation or propagation velocity is calculated from line integrals along rays in the plane between boreholes, and displayed as a digital picture. In principle, the transmission of seismic data can also be analyzed by this method as long as it obeys the line integral model. Iterative solution techniques, similar to those used in medical X-ray tomography are applied to solve the large sets of linear equations relating the line integral data and the remote observables. A straight-line ray optics model was used for energy propagation between boreholes. The performance of the reconstruction algorithm is demonstrated using computer-generated data and it is then applied to experimental data collected by continuous-wave electromagnetic transmission probing. Experimental attenuation reconstructions are presented of a proposed underground urban masstransit site. Both lateral and vertical variations are displayed using these methods. © 1979 IEEE.

引用

页码：1065 / 1073

页数：9

共 42 条

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