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dc.contributor.authorBaker, Gregory S.
dc.contributor.authorSteeples, Don W.
dc.contributor.authorSchmeissner, Chris M.
dc.date.accessioned2015-04-02T19:53:59Z
dc.date.available2015-04-02T19:53:59Z
dc.date.issued1999-03-01
dc.identifier.citationBaker. G.S., Steeples, D.W. & Schmeissner, C.M. (1999). ”In‐situ, high‐frequency P-wave velocity measurements within 1 m of the earth’s surface.” In‐situ, high‐frequency P-wave velocity measurements within 1 m of the earth’s surface, 64(2), 323-325. http://www.dx.doi.org/10.1190/1.1444537en_US
dc.identifier.issn0016-8033
dc.identifier.urihttp://hdl.handle.net/1808/17302
dc.descriptionThis is the publisher's version, also available electronically from "http://library.seg.org".en_US
dc.description.abstractSeismic P-wave velocities in near‐surface materials can be much slower than the speed of sound waves in air (normally 335 m/s or 1100 ft/s). Difficulties often arise when measuring these low‐velocity P-waves because of interference by the air wave and the air‐coupled waves near the seismic source, at least when gathering data with the more commonly used shallow P-wave sources. Additional problems in separating the direct and refracted arrivals within ∼2 m of the source arise from source‐generated nonlinear displacement, even when small energy sources such as sledgehammers, small‐caliber rifles, and seismic blasting caps are used. Using an automotive spark plug as an energy source allowed us to measure seismic P-wave velocities accurately, in situ, from a few decimeters to a few meters from the shotpoint. We were able to observe three distinct P-wave velocities at our test site: ∼130m/s, 180m/s, and 300m/s. Even the third layer, which would normally constitute the first detected layer in a shallow‐seismic‐refraction survey, had a P-wave velocity lower than the speed of sound in air.en_US
dc.publisherSociety of Exploration Geophysicistsen_US
dc.titleIn-situ, high-frequency P-Wave velocity measurements within 1 m of the Earth’s surfaceen_US
dc.typeArticle
kusw.kuauthorSteeples, Don W.
kusw.kudepartmentGeologyen_US
dc.identifier.doi10.1190/1.1444537
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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