Barometric and Earth-tide induced water-level changes in the Inglefield sandstone in Southwestern Indiana.

From: Proceedings of the Indiana Academy of Science | Date: August 15, 2005| Author: | Copyright information

ABSTRACT. Water-levels from a deep-shallow piezometer nest in the Inglefield sandstone depict a dynamic groundwater system. Water-levels at both the 33.5 m and 18.3 m depths fluctuate up to 0.15 m in a matter of hours. Most of this fluctuation is driven by responses to atmospheric pressure change. A strong inverse correlation exists between groundwater-levels and barometric pressure. Calculated barometric efficiency for this aquifer is 0.95, indicating a rigid aquifer skeleton. Following successful quantification and removal of the barometric effects on water-level data, the ...

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