MAPPING EPIKARST IN THE ARBUCKLE-SIMPSON AQUIFER, SOUTH-CENTRAL OKLAHOMA, USING HELICOPTER ELECTROMAGNETICSURVEY DATA

摘要

The U.S. Geological Survey has been actively using helicopter electromagnetic surveys over karstic aquifers as part of on-going research to aid in the creation of highly detailed three-dimensional geologic models. The geologic models are the basis for understanding the geohydrologic framework of the aquifers, and they provide essential information needed for groundwater models used to manage an increasingly important resource. As part of this research, the USGS has developed and applied methods for mapping epikarst, which plays an important role in groundwater recharge. A case study in the Arbuckle-Simpson aquifer in south-central Oklahoma is presented here.