Field comparison of shallow seismic sources

By: , and 



Choosing a seismic source for a shallow reflection survey can be the most pivotal decision for the engineering geophysicist. The intent of this paper is to present data that will assist in selection of a shallow seismic source best meeting the goals within the constraints of specific projects, particularly in areas where the water table is near the surface. The data were collected (and displayed as seismograms and amplitude spectra) for 15 different shallow seismic sources in October, 1985, at a single site in New Jersey; they show the different characteristics of each source. Considering the almost three orders of magnitude difference in total source energy between the largest and smallest source, we chose a display format that presented the data as objectively as possible, while still allowing direct source‐to‐source comparisons. Two strong reflections at about 100 and 130 ms probably mark the top and bottom of a clay unit 80 m below the surface at this site. Our previous work and that of our colleagues suggests that, given a specific set of site characteristics, any source could dominate the comparison categories addressed here.

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Publication type Article
Publication Subtype Journal Article
Title Field comparison of shallow seismic sources
Series title Geophysics
DOI 10.1190/1.1442061
Volume 51
Issue 11
Year Published 1986
Language English
Publisher Society of Exploration Geophysicists
Contributing office(s) Office of Ground Water
Description 26 p.
First page 2067
Last page 2092
Country United States
State New Jersey
Other Geospatial Brigantine National Wildlife Refuge
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