Extracting the Building Response Using Seismic Interferometry: Theory and Application to the Millikan Library in Pasadena, California

• DOI: 10.1785/0120050109
• Publication Date: 2006-04-06T12:46:13Z
• Authors: R. Snieder
• Keywords: 01 natural sciences; 0105 earth and related environmental sciences

The motion of a building depends on the excitation, coupling to ground, and mechanical properties building. We separate response from excitation ground by deconvolving recorded at different levels in apply this recordings Robert A. Millikan Library Pasadena, California. This de- convolution allows for separation instrinsic attenuation radiation damping. waveforms obtained deconvolution with top floor show superposition one upgoing downgoing wave. basement can be formulated either as sum waves, or over normal modes. Because these deconvolved waves late time have monochromatic character, they are most easily analyzed normal-mode theory. For we estimate shear velocity c 322 m/sec quality factor Q 20. These values explain both propagating