Advantages of wet work for near-surface seismic reflection

Miller, R. D.; Markiewicz, R. D.; Rademacker, T. R.; Hopkins, R.; Rawcliffe, R. J.; Paquin, J.

Abstract:

Benefits of shallow water settings (0.1 to 0.5 m) are pronounced on shallow, high-resolution seismic reflection images and, for examples discussed here, range from an order of magnitude increased signal-to-noise ratio to resolution potential elevated by more than 8 times. Overall data quality of high-resolution seismic reflection data at three sites notorious for poor near-surface reflection returns was improved by coupling the source and/or receivers to a well sorted and fully saturated surface. Half-period trace-to-trace static offsets evident in reflections from receivers planted into a creek bank were eliminated by moving the geophones to the base of a shallow creek at the toe of the bank. Reflections from a dipping bedrock were recorded with a dominant frequency approaching 1 KHz from hydrophones in 0.5 m of water at the toe of a dam using a hammer impact source. A tamper impacted by a dead blow hammer in a shallow (10-20 cm) deep creek produced reflections with a dominant frequency over 400 Hz at depths as shallow as 6 ms. ?? 2007 Society of Exploration Geophysicists.

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Conference Paper

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70033149

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Miller, R. D.; Markiewicz, R. D.; Rademacker, T. R.; Hopkins, R.; Rawcliffe, R. J.; Paquin, J.

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1151

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English

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SEG Technical Program Expanded Abstracts

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Advantages of wet work for near-surface seismic reflection; 2007; Conference Paper; SEG Technical Program Expanded Abstracts; Miller, R. D.; Markiewicz, R. D.; Rademacker, T. R.; Hopkins, R.; Rawcliffe, R. J.; Paquin, J.