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2D多尺度混合优化地球物理反演方法及其应用(英文)
引用本文:潘纪顺,王新建,张先康,徐朝繁,田晓峰,潘素珍.2D多尺度混合优化地球物理反演方法及其应用(英文)[J].应用地球物理,2009,6(4):337-348.
作者姓名:潘纪顺  王新建  张先康  徐朝繁  田晓峰  潘素珍
作者单位:[1]华北水利水电学院,郑州450011 [2]中国地震局地球物理勘探中心,中国郑州450002 [3]PGS AustraliaPty Ltd, 1060 Hay St, West Perth, Western Australia,6005, Australia
基金项目:国家自然科学基金,the Promoting Foundation for Advanced Persons of Talent of NCWU 
摘    要:局部优化和全局优化方法广泛应用到地球物理反演,但是两者各有其优缺点。将两类方法结合起来可以取长补短。将退火遗传算法(SAGA)和单纯形算法相结合,得到了一种高效、健全的2D非线性混合地震走时反演方法。首先,利用SAGA进行大范围的全局搜索,然后由单纯形方法进行快速局部搜索。为了降低层析成像的多解性,我们采用了多尺度逐次逼近的技巧。把速度场划分为不同的空间尺度,定义网格节点上的速度作为待反演参数,采用双三次样条函数模型参数化,正问题采用有限差分走时计算方法,反问题采用多尺度混合反演方法。一个低速度异常体的数值模拟试验和抗走时扰动试验表明该方法是有效和健全的。我们将该方法应用到青藏高原东北缘阿尼玛卿rlet,Meyer,Marr,缝合带东段上部地壳速度结构研究中。数字模型试验和实际资料的应用表明了方法的有效性和健全性。

关 键 词:混合优化方法  地球物理反演  多尺度  应用  模拟退火遗传算法  双三次样条函数  旅行时反演  二维

2D multi-scale hybrid optimization method for geophysical inversion and its application
Jishun Pan,Xinjian Wang,Xiankang Zhang,Zhaofan Xu,Ping Zhao,Xiaofeng Tian,Suzhen Pan.2D multi-scale hybrid optimization method for geophysical inversion and its application[J].Applied Geophysics,2009,6(4):337-348.
Authors:Jishun Pan  Xinjian Wang  Xiankang Zhang  Zhaofan Xu  Ping Zhao  Xiaofeng Tian  Suzhen Pan
Institution:Pan Jishun1,2,Wang Xinjian1,Zhang Xiankang2,Xu Zhaofan2,Zhao Ping3,Tian Xiaofeng2,, Pan Suzhen21. North China Institute of Water Conservancy , Hydroelectric Power,Zhengzhou 450011,China. 2. Geophysical Exploration Center,China Earthquake Administration,Zhengzhou 450002,China. 3. PGS Australia Pty Ltd,1060 Hay St,West Perth,Western Australia,6005,Australia
Abstract:Local and global optimization methods are widely used in geophysical inversion but each has its own advantages and disadvantages. The combination of the two methods will make it possible to overcome their weaknesses. Based on the simulated annealing genetic algorithm (SAGA) and the simplex algorithm, an efficient and robust 2-D nonlinear method for seismic travel-time inversion is presented in this paper. First we do a global search over a large range by SAGA and then do a rapid local search using the simpl...
Keywords:multi-scale  seismic travel-time tomography  hybrid optimization method  inversion  A'nyemaqen suture zone
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