Earth Motion Beneath a Prescribed Boundary Displacement

Earth deflections beneath a prescribed boundary displacement were obtained theoretically and experimentally. The problem was stated in terms of a two-dimensional model and an attempt was made to design a corresponding experiment. Relative deflections between the surface of the earth and points of increasing depths within the earth were measured. The maximum depth was 42 ft 7 in, below the earth’s surface. Theoretical and experimental results were compared.