Effects of Underground Cavities on the Frequency Spectrum of Seismic Shear Waves

<div>Peaks of the horizontal displacement of the control point <svg height="9.21094pt" id="M274" style="vertical-align:-0.2129908pt" version="1.1" viewbox="-0.0498162 -8.99795 9.91808 9.21094" width="9.91808pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M699 369C699 549 575 666 407 666C186 666 23 488 23 278C23 101 145 -16 312 -16C535 -16 699 153 699 369ZM600 373C600 210 500 19 321 19C186 19 120 129 120 272C120 450 232 631 399 631C541 631 600 522 600 373Z" id="g113-80"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="722" vert-adv-y="722"></glyph.data></g></svg>, expressed in percent of the free-field peak value.</div>

Advances in Civil Engineering

fig15

Figure 15

Figure 15: Effects of Underground Cavities on the Frequency Spectrum of Seismic Shear Waves 