| 重力界面反演改进算法的比较与应用 |
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| 引用本文： | 张冲,吴国超,宋立成,袁志明,乔中坤.重力界面反演改进算法的比较与应用[J].世界地质,2015,34(3):819-824. |
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| 作者姓名： | 张冲 吴国超 宋立成 袁志明 乔中坤 |
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| 作者单位： | 1. 吉林大学 地球探测科学与技术学院，长春 130026; 2. 浙江大学 地球科学学院，杭州 310027; 3. 辽宁省有色地质局勘查总院，沈阳 110013 |
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| 摘 要： | 为得到更接近地下真实分布的反演界面,笔者比较分析Parker-Oldenburg反演和改进迭代反演,发现改进迭代反演方法不仅可以避免计算放大项,而且能够得到更好结果。通过理论模型,对经典Parker-Oldenburg方法和改进迭代反演方法的计算速度、迭代收敛性和结果精确性进行比较,结果表明改进迭代反演方法在保证计算速度和迭代收敛的情况下,能获得更精确的地下界面结构。通过实际数据验证了改进迭代反演的有效性和实用性。
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| 关 键 词： | 重力界面反演 Parker-Oldenburg 公式 改进迭代 |
Comparison and application of improved gravity interface inversion |
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| ZHANG Chong,WU Guo-Chao,SONG Li-Cheng,YUAN Zhi-Ming,QIAO Zhong-Kun.Comparison and application of improved gravity interface inversion[J].World Geology,2015,34(3):819-824. |
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| Authors: | ZHANG Chong WU Guo-Chao SONG Li-Cheng YUAN Zhi-Ming QIAO Zhong-Kun |
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| Institution: | 1. College of Geo- exploration Science and Technology，Jilin University，Changchun 130026，China; 2. School of Earth Sciences，Zhejiang University，Hangzhou 310027，China; 3. Liaoning Non- ferrous Geological Exploration Institute，Shenyang 110013，China |
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| Abstract: | To get more accurate interface of inversion，the authors compared Parker- - Oldenburg inversion with improved iteration inversion，and found out that the improved iteration inversion not only avoids calculating the am- plifying term，but also gets better results． Applying Parker-Oldenburg inversion and improved iteration inversion in theoretical model，through the speed of calculation，convergence of iteration and accurateness of results based on density interface，we drew the conclusion that the improved iteration inversion can obtain a better structure relief of the underground in the case of ensuring the calculation speed and convergence． The effectiveness and utility of the improved iteration method can be verified by real data． |
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| Keywords: | gravity interface inversion Parker-Oldenburg formula improve iteration |
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