Estimating hydraulic properties of the Floridan Aquifer System by analysis of earth-tide, ocean-tide, and barometric effects, Collier and Hendry Counties, Florida

Introduction Purpose and Scope Acknowledgments Description of the Study Area 3 Hydrogeology of the Study Area 4 Naturally Occurring Stresses on Aquifers 7 Solar and Lunar Stresses 7 Atmospheric Stresses 10 Estimates of loading efficiency and relation to tidal and barometric efficiencies 12 Determination of barometric efficiency by Clark's method 14 Determination of loading efficiency by Clark's method 22 Harmonic Structure of Tidal and Atmospheric Stresses 23 Analysis for amplitude and phase of harmonic components 29 Analytical Methods for Computing Aquifer Parameters from Naturally Forced Periodic Data 35 Using Heads Influenced by Ocean Tides for Estimates of the Hydraulic Diffusivity of an Aquifer 35 Inland extent of ocean-tide influence 40 Choice of method for estimating hydraulic diffusivity 42 Estimates of hydraulic diffusivity 44 Analysis with numerical model 50 Using Heads Influenced by Earth Tides for Estimates of Specific Storage. Porosity, and Bulk Modulus of the Aquifer 54 Recent research into methods of estimating specific storage, porosity, and bulk modulus 56 Using Heads in Open Wells Penetrating Confined Aquifers for Estimates of the Transmissivity and Storage Coefficient of an Aquifer 58 Using Heads or Water Levels to Estimate Vertical Hydraulic Conductivity 63 Conclusions 63 Summary 66 References Cited 68