Interpretation of Tilt Measurements in the Period Range Above that of the Tides

air pressure amount of precipitation amplitude amplitude ratio analyzed annual periodicity aperiodic portions appear approximation Askania borehole tiltmeter Braunlage Clausthal Clausthal-Zellerfeld Comparison correlation curves deformation depth dependence depth of 15 determined discoid load displacement vector drift dyn/cm² earth's surface elliptical load Equation evaluation filter finite element method Flach function geological Geophysics graywacke ground temperature half-space Hanscom AFB horizontal tilts impulse response influence installation depth investigation Lamé constants loaded surface long-period maximum entropy method maximum tilt ME-spectra measured tilt meters model calculations montmorillonite Mühlenhöhe Station numerical order of magnitude parameters percent period range permeability phase Poisson's ratio possible precipitation and tilt prediction error problem radius rain range of veins recording region resulting tilts rock Section shown in Figure Stadtweger Pond Surface Runoff tectonic temperature fluctuations tides tilt changes Tilt Components tilt effects tilt measurements tilt signal tion topography Vertical Tilt water level fluctuations weathered layer Zellerfeld Zellerfeld-Mühlenhöhe Station