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| | 講演要旨(英文) | | An application of refraction tomographic method to identify an ore-dyke body is presented. Travel time tomographic method, a widely used geophysical method in seismology, exploration and engineering geophysics, is applied to detect the existence and the geometry of a vertically dipping ore-dyke with strong spatial variations in porosity and permeability. Refraction tomography was actually used as additional method that was utilized in the study area in Black Forest, Germany. The seismic data was acquired on the surface and has a length of about 800 m. The vertically dipping ore-dyke was situated on the center of the seismic line and approximately perpendicular to the orientation of seismic line. The results show negative velocity anomaly that could be correlated with the existence of ore-dyke. Some synthetic tests were applied to determine the resolution limit of this method. |
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