Research and Application of Three‐Dimensional Density Interface Inversion

IF 1.6 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS 地球物理学报 Pub Date : 2014-01-01 DOI:10.1002/CJG2.20086
F. Juan, Meng Xiaohong, Chen Zhaoxi, Shi Lei, Wu Yue, Fan Zhen-jun
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引用次数: 1

Abstract

Based on the Fourier transform, the Parker-Oldenburg algorithm in the frequency domain was extended to the three-dimensional case in which the density changes with depth. From this, a gravity interface inversion formula was derived in which the assumed density varies laterally and vertically. Iterative convergence is assured by fixing a particular depth as the datum plane below the surface to reduce the interface fluctuation. The results of an example of synthetic gravity data indicate that the proposed method has high precision and rapid convergence, with high practical value for the inversion of density interfaces. This method was also used to determine the Moho depth beneath northern China. The results were verified by seismic sounding data.
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三维密度界面反演的研究与应用
基于傅里叶变换,将频域的Parker-Oldenburg算法扩展到密度随深度变化的三维情况。在此基础上,推导了假设密度沿水平方向和垂直方向变化的重力界面反演公式。通过在平面下固定一定的深度作为基准面,以减小界面波动,保证了迭代收敛。算例结果表明,该方法精度高,收敛速度快,对密度界面反演具有较高的实用价值。该方法也被用于确定中国北方的莫霍深度。用地震测深资料对结果进行了验证。
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来源期刊
地球物理学报
地球物理学报 地学-地球化学与地球物理
CiteScore
3.40
自引率
28.60%
发文量
9449
审稿时长
7.5 months
期刊介绍:
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