Dept. of Geol. and Geophys., Weeks Hall, Univ. of Wisconsin, Madison, WI 53706
Woods Hole Oceanogr. Inst., Woods Hole, MA 02543
C. S. Clay
University of Wisconsin, Madison, WI 53706
The higher-order diffractions of transient pressure signal from a combination of hard finite facet wedge of 45 deg and an infinite plane have been studied experimentally and theoretically. Experiments used a spark point source with a separated receiver at the same side of the wedge. The reflected pressure signals were well separated in time domain. Higher-order diffractions from the apex and troughs of the wedge were observed. The studies were concentrated on the reflections from the facets and the diffractions. The experimental geometry is different from Medwin et al. [J. Acoust. Soc. Am. 83, 1794--1803 (1988)]. Biot and Tolstoy's exact wedge solution [J. Acoust. Soc. Am. 29, 381 (1957)] and extensions were used to compare experimental data and theory.