Analysis of wave-induced pore pressure changes recorded during the 1980 Mammoth Lakes, California, earthquake sequence

摘要: Abstract Acceleration and wave-induced pore pressure were recorded in a saturated sand during the 1980 Mammoth Lakes, California, earthquake sequence. For largest event recorded, was observed to be proportional vertical surface acceleration P -wave arrivals horizontal velocity S arrivals. The results can quantitatively explained with linear elastic model of porous medium, such that depends on dilatation is independent shear strain. A slight frequency dependence ratio indicates local fluid flow scale individual pores. good agreement between observations theory deformation primarily linear, even though maximum strains close typical thresholds for liquefaction.