Choosing Biot parameters for modeling water-saturated sand
Choosing Biot parameters for modeling water-saturated sand
复制标题
DOI：
10.1121/1.421037
复制
发表时间：
1997-09
影响因子：
2.4
通讯作者：
C. Hickey;J. Sabatier
中科院分区：
文献类型：
--
作者：
C. Hickey;J. Sabatier
Chotiros的工作[J. Acoust.美国社会97，199-214（1995）]激发了人们对探测毕奥II型（慢）P波以进行海底表征的兴趣。Chotiros假设I型（快）P波的全内反射可以发生在水-沉积物界面处，并且观察到的临界角以下的折射能量与II型（慢）P波相关。讨论了在毕奥理论中用于模拟这些观测的参数的选择。Chotiros提出的参数集和以前的桑迪沉积物参数集之间存在两个主要差异。首先，无夹套的体积模量Kr的值比通常使用的石英晶体的体积模量小约五倍。该值通过将其等同于由Molis和Chotiros [J. Acoust.美国社会91，2483（A）（1992）]。第二，框架体积模量Kb的值，通过拟合到测量值的t…
The work of Chotiros [J. Acoust. Soc. Am. 97, 199–214 (1995)] has stimulated renewed interest in detecting the Biot type II (slow) P wave for the purpose of ocean bottom characterization. Chotiros postulates that total internal reflection of the type I (fast) P wave can occur at a water–sediment interface and that the observed refracted energy below the critical angle is associated with the type II (slow) P wave. The choice of parameters used in the Biot theory to model these observations is discussed. Two major differences between the parameter set proposed by Chotiros and previous parameter sets for sandy sediments exist. First, the value for the unjacketed bulk modulus, Kr, is about five times less than the bulk modulus for quartz crystals, which is commonly used. This value is obtained by equating it to a value of effective grain modulus measured by Molis and Chotiros [J. Acoust. Soc. Am. 91, 2483(A) (1992)]. Second, the value for the frame bulk modulus, Kb, obtained by fitting to measured values of t...