只要在实际条件下测量岩石中的地震速度和衰减是有效的,就要努力“解释”所得结果。最欠完善的提法是这种结论,认为在实验误差范围内衰减及速度是频率的线性函数。一种比较完善的方法是选一个有关的函数对来拟合衰减和速度数据,以便描述波在因果介质中的传播。但是,这仍然是一种曲线拟合。因而大多数衰减—弥散对当外推到高频或低频时会产生不合理的结果。它们不能使我们洞察地震波失去能量的方式。寻求 As long as it is effective to measure the seismic velocity and attenuation in the rock under realistic conditions, efforts should be made to “explain” the results. The most imperfect formulation is the conclusion that attenuation and velocity are linear functions of frequency over the experimental error range. A more complete method is to select a pair of related functions to fit the attenuation and velocity data in order to describe the wave propagation in the causal medium. However, this is still a curve fit. As a result, most decay-diffusions can produce unreasonable results when extrapolated to high or low frequencies. They do not give us insight into the way seismic waves lose energy. seek