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- W2128114014 abstract "A number of geologic processes, particularly seismic faulting, impact crater slumping, and long runout landslides, require the failure of geologic materials under differential stresses much smaller than expected on the basis of conventional rock mechanics. This paper proposes that the low strengths apparent in these phenomena are due to a state of ‘acoustic fluidization’ induced by a transient strong acoustic wave field. The strain rates possible in such a field are evaluated, and it is shown that acoustically fluidized debris behaves as a newtonian fluid with a viscosity in the range 10 5 –10 7 P for plausible conditions. Energy gains and losses in the acoustic field are discussed, and the mechanism is shown to be effective if internal dissipation in the field gives a Q ≳ 100. Whether such values for Q are realized is not known at present. However, acoustic fluidization provides a qualitatively correct description of the failure of rock debris under low differential stresses in the processes of faulting, crater slumping, and long runout landslides. Acoustic fluidization thus deserves serious consideration as a possible explanation of these phenomena." @default.
- W2128114014 created "2016-06-24" @default.
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- W2128114014 date "1979-12-10" @default.
- W2128114014 modified "2023-10-14" @default.
- W2128114014 title "Acoustic fluidization: A new geologic process?" @default.
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- W2128114014 doi "https://doi.org/10.1029/jb084ib13p07513" @default.
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