Design Criteria for Geotomographic Field Studies

by Americo Fernandez And J. Carlos Santamarina
Year: 2003


Fernandez, A. and Santamarina, J. C. (2003). "Design Criteria for Geotomographic Field Studies." ASTM Geotechnical Testing Journal, Vol. 26, No. 4, pp. 410-420


​The tomographic inversion of boundary measurements permits determining the spatial distribution of a material property within a soil mass. The most common geotomographic setup for wave-based measurements (mechanical or electromagnetic) consists of two arrays of transducers, one with sources and the other with receivers. The separation between the arrays and the number of sources and receivers have to be determined for every new field condition in order to satisfy resolution requirements in view of physical processes and mathematical constraints. The adequate design of a geotomographic study maximizes the amount of information gathered in the field, renders the maximum possible resolution within the physical constrains associated with field conditions and the available instruments, and prevents unnecessary measurement duplication.


tomography nondestructive testing geophysics cross-hole seismic imaging in situ testing inversion least squares small strain