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Supermultiplication des charges et des sismographes au Sahara (zone Nord)Normal access

Authors: Gilbert Pommier and Henri Richard
Journal name: Geophysical Prospecting
Issue: Vol 5, No 3, September 1957 pp. 282 - 299
DOI: 10.1111/j.1365-2478.1957.tb01434.x
Organisations: Wiley
Language: English
Info: Article, PDF ( 1001.61Kb )

Summary:
In desert countries, reflection seismic prospecting is often very difficult due to bad surface conditions, which adversely affect the quality of the reflections. From the beginning the Northern Sahara proved to be particularly unfavourable. In 1954 a series of systematic tests led to a shooting method which gave satisfactory results. This method used a high multiplicity of the shotholes (up to 100 per shotpoint) combined with a high multiplicity of geophones (up to, and sometimes more than 100 per trace). The method has proved effective and relatively economical to run since 1954. The evident conclusion is, that, under special conditions, high multiplicity may be very helpful in the future.


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