
%0 Journal Article
%A Whiteley, R.J. 
%A Holmes, W.H. 
%A Dowle, R.D. 
%T A new method of downhole-crosshole seismics for geotechnical investigation
%J Exploration Geophysics
%D 1990/06/01
%V 21
%N 2
%P 83-89
%K 
%R https://doi.org/10.1071/EG990083
%U https://www.publish.csiro.au/paper/EG990083 
%X Downhole high resolution seismic methods have significant application to geotechnical investigations in rock. A new downhole and crosshole seismic method utilises sophisticated digital acquisition and processing to provide multi-fold subsurface images which show a degree of detail and resolution not attainable previously. Both first and reflected seismic waves are employed in the numerical analysis of the data, which includes beam forming and tube-wave removal. The method shows great potential in geotechnical investigations including the definition of dykes. 
