Full text loading...
-
CENTRAL FREQUENCY SOUNDING IN SHALLOW ENGINEERING AND HYDRO‐GEOLOGICAL PROBLEMS*
- Source: Geophysical Prospecting, Volume 18, Issue 2, Apr 1970, p. 236 - 254
-
- 27 Apr 2006
Abstract
The paper deals with the early stages of development of a convenient form of electromagnetic induction method of sounding referred to as ‘Central Frequency Sounding’ and abbreviated as CFS. The method is introduced as a rapid and useful technique for investigation of shallow engineering and hydro‐geological problems. Sets of theoretical two‐layer master curves, suitable for interpretation of field data involving measurement of the vertical magnetic component of the field induced at the center of a loop placed on a two‐layer earth, have been presented.
The approximate but reasonably accurate solutions for a two‐layer earth of any arbitrary resistivity contrast have been considered for the purpose and expressed in a form suitable for computation. The computed results have been presented in sets of curves useful for interpretation of field data.