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Propagation velocity of shockwaves and pressure waves in soil and rock
Author(s) -
Majtenyi Steven I.,
Foster Eugene L.
Publication year - 1992
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/92gl00754
Subject(s) - overpressure , geology , wave propagation , exponential function , range (aeronautics) , pore water pressure , mechanics , particle velocity , geotechnical engineering , materials science , optics , physics , thermodynamics , composite material , mathematical analysis , mathematics
A variable pressure wave propagation velocity is developed and analyzed in ground materials which may be characterized by an exponential density ‐ pressure relationship. The peak overpressure dependence is minor in the low pressure range and the propagation velocity of the pressure wave is essentially a constant, in fact, it is the seismic P‐wave propagation velocity. Pressure dependence becomes increasingly more significant at peak overpressures exceeding 1 kbar (10 8 Pa). At very high pressure levels encountered only in shockwaves at and above 10 kbar (10 9 Pa), the initial mechanical characteristics of the ground materials become less significant, and the propagation velocity depends primarily upon the peak overpressure.