L20_SeismicRefractionIII-page10

L20_SeismicRefractionIII-page10 - 0.0 Depth (m) 1.0 2.0 3.0...

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Unformatted text preview: 0.0 Depth (m) 1.0 2.0 3.0 0 5 10 Distance (m) 0.0 Depth (m) 1.0 2.0 3.0 0 5 10 Distance (m) 15 20 25 15 20 25 -0.10 -0.05 0.00 0.05 0.10 Velocity Difference (m/ms) Figure 7 Difference in velocity between injection and background refraction images collected along (a) line EC, and (b) line NC. The regions that are black have a ray-path density less than unity in either the background or injection images, and thus are not Applied Geophysics Refraction III constrained by the data. Examples Quarry survey Identifying location and thickness of sand and gravel deposits Gravel Sand Chalk Applied Geophysics Refraction III ...
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