MULTIPLE EVENTS IN REFRACTION SHOOTING*
- 1 December 1965
- journal article
- Published by Wiley in Geophysical Prospecting
- Vol. 13 (4) , 617-658
- https://doi.org/10.1111/j.1365-2478.1965.tb01953.x
Abstract
A description and classification is given for those later events in seismograms of refraction–and wide angle reflection shooting which travel nearly parallel and at constant time intervals behind the first arrivals and which are frequently observed in field surveys. Multiple events with the velocity V1 of the uppermost layer may be caused by multiple P‐reflections and certain velocity conditions or by PS‐conversions. In addition to these types multiple events with the velocity V2 or Vn may be caused by reflected refractions or by reflected diving waves. The different types will be distinguished mainly by means of travel time–and amplitude‐considerations.Keywords
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