ABSTRACT

Table 1 on the next page lists the merits and shortcomings of each technique for the various survey objectives in relation to all the other methods.

Performance ratings are defined on a scale from 0 (very poor) to 5 (very good). The attainable investigation depths range from zero to high (>500 m). lim. : denotes method and equipment inherent depth limitations; bhd : denotes bore hole depth.