摘要
本文是文献[8]的继续,文中提出了地震勘探的带阻尼波动方程反演的新方法,应用此反演算法可以通过微机识别地层的波阻抗,这里把地层分成100层,地震数据含有10%的误差,且反演计算时间仅仅是正演计算时间的三倍.文献[1]-[4]的计算方法是基于波动方程的混合问题,而文献[8]所提出的反演算法是基于波动方程的哥西问题,许多例子充分说明后者更有效.
This is the sepuel of the authors'paper[8],and present a new methodfor the inyersion of the damped wave equation in seismic exploration.Applying the inver sion algorithm we can identify the wave impedances of mediums with a microcomputerwhile stratum is divide by 100 layers and its seismographic data contains 10% noise, andits computation time of this algorithm is about threefold of that for solation to the positiveproblem.Algorithms Siren in[1]-[4] are based on the mixed problem of wave equation,and we have given another inversion algorithm in [6] ,based on the Cauchy problem.Manyexamples show that the efficiency of the latter is much better than the former given in[1]-[4].
出处
《CT理论与应用研究(中英文)》
1994年第3期27-32,共6页
Computerized Tomography Theory and Applications
基金
国家自然科学基金
关键词
阻尼
波动方程
地震勘探
地震反射波
成像
s:Damped wave equation
Imedance identincation
Seismic Prospecting.