ABSTRACT
The Integrated Geophysical Method (IGM) designed to map buried underground karst features (caves, sinkholes, conduits, fractures, etc.) is based on the combination of the theoretical and logistical application of three geophysical methods to optimize data quality/quantity acquisition and yet to be cost effective. Underground karst features are usually complex requiring sensitive indirect methods to be investigated and a high density sampling rate often over large areas to assure optimum lateral and vertical resolution that describe appropriately the system structure (geometry, size and connectivity of karst features). High density data sampling at cost effective prices requires a systematic procedure of application of the IGM. This is accomplished by optimizing the cost effectiveness (ratio between the density data sampling over the investigation cost) and mapping effectiveness (precision of mapping) of each of the components of the IGM applied in different stages of the investigation.
