Sondagens eléctricas verticais, serão mesmo verticais?

Abstract

Electrical soundings, sometimes called vertical electrical soundings (VES), can be used in areas of complex geology, where pronouced orientational variation of resistivity measurements can be encountered. However, even in the circinstances, it is usual to use bo the field and interpretation techniques developed for models in which resistivity measurements vary with depth only. The present paper discusses and illustrates with field and model data the difficulties inherent to such aproach when carrying out and interpreting resistivity soundings in areas of complex geology. Then, alternative techniques more suitable to use in these areas reviewed and discussed. Finally, economical aspects on the use of these alternative techniques are discussed.