. The Earth beneath the sea : History. Ocean bottom; Marine geophysics. SECT. I] SEISMIC REFRACTION AND REFLECTION MEASUREMENTS 11 ', i"^ ''}^^1>. Fig. 6. Ray diagrams defining angles used in computing velocity and thickness for sloping layers. can compute C2 and a; 12. Using these additional values in the next step allows us to compute C3 and 0123, and so on for each layer. For computing the thickness of each layer we again follow a stepwise process using the intercept times taken from the time-distance graph. Fig. 7 shows the fictitious ray paths associated with the intercept times,


. The Earth beneath the sea : History. Ocean bottom; Marine geophysics. SECT. I] SEISMIC REFRACTION AND REFLECTION MEASUREMENTS 11 ', i"^ ''}^^1>. Fig. 6. Ray diagrams defining angles used in computing velocity and thickness for sloping layers. can compute C2 and a; 12. Using these additional values in the next step allows us to compute C3 and 0123, and so on for each layer. For computing the thickness of each layer we again follow a stepwise process using the intercept times taken from the time-distance graph. Fig. 7 shows the fictitious ray paths associated with the intercept times, the travel times for zero shot-detector distance. This figure is derived from Fig. 6 by simply moving point B to point A and considering that the rays originating. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hill, M. N. (Maurice Neville), 1919-. New York : Interscience Pub.


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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom