【摘要】 扩散蒙特卡罗方法是量子力学中研究多体系统的一种有效数值计算方法,具有较强非线性搜索能力,能够更好地求得全局最优解。本文将该方法从量子力学范畴引入到地震反演这样的经典系统,通过数值模拟试验验证了该方法的可行性。在此基础上,进行了实际地震资料的反演,获得了较好的反演结果,表明把扩散蒙特卡罗方法应用于地球物理反问题的求解是成功的,它适合于非线性、多极值的地球物理反演问题,在避免陷入局部极小等方面有着一定的优势。更多还原

【Abstract】 Diffusion Monte Carlo method,an effective numerical simulation way for many-body system research in quantum mechanics,has strong nonlinear searching capability for getting global optimal solution.This paper introduces diffusion Monte Carlo method from the domain of quantum mechanics to seismic inversion,which results show the feasibility of the method.On that basis,the inversion of real seismic data gets preferable result,which denotes that diffusion Monte Carlo method has successful application in seismic inversion,has some advantages for avoiding being trapped in local minimum and is suitable for nonlinear,multi-maximum geophysical inverse problem.更多还原