Finite element modelling of atmosphere loading effects on strain, tilt and displacement at multi-sensor stations

Abstract

A R Y Strain-and tiltmeter observations are composed of signals of different origin. Tides are a wellknown phenomenon that can be extracted from the time series by tidal analysis. Depending on the location of the station, residuals, however, contain contributions of different magnitudes from ocean loading, changes in atmospheric or hydrological loading, anthropogenic induced signals and tectonics. Reductions of the residual variations are indispensable for extraction of, for example the pure tectonical signal. One of the challenges in view of the reductions is to understand transfer mechanisms between loading and local conditions, such as topography, cavity and geological features, which lead to additional or modified deformations.