It is not unusual for a geologist or engineer to be called upon to investigate and address problems related to sinkholes in karst environment. Sinkholes in a karst environment can be a dream, or nightmare. Most professionals know that geophysics can help, but the geophysical method and parameters that may be best suited for the problem at hand are a less certain choice. Geophysical technology and standards have evolved tremendously over the last 10-years. This paper briefly examines geophysical standards that have been developed. A discussion of the methods that are commonly applied to karst investigations, the advantages and disadvantages of the methods, acquisition parameters, and the kinds of results to be expected will be presented. Common geophysical methods to be examined in detail include electromagnetic terrain conductivity, gravity, electrical imaging and seismic.

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