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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Gravity inversion of 2.5D faulted beds using depth-dependent density
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Gravity inversion of 2.5D faulted beds using depth-dependent density

机译：使用与深度有关的密度反演2.5D断层床的重力

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摘要

A gravity inversion using Marquardt algorithm to simultaneously estimate four parameters of a 2.5D faulted bed in addition to regional gravity background is presented. The density contrast along the structure varied continuously with depth based on aparabolic function. Analysis of gravity anomalies over a synthetic fault structure using the present inversion unravelled the fact that the estimated parameters of a fault structure were independent of its strike length, as long as the profile bisectedthe fault plane. In case the profile failed to bisect the strike length, then the offset of the profile from the origin of the fault plane must be considered for reliable interpretation. A simulated parabolic density function of the Chintalpudi sub-basinin India, was used to interpret the gravity anomalies of the Aswaraopet master fault. The estimated structure yielded a geologically plausible model that is consistent with borehole information.
机译：除了区域重力背景外，还提出了使用Marquardt算法进行重力反演以同时估算2.5D断层床的四个参数的方法。沿结构的密度对比基于抛物线函数随深度连续变化。使用当前反演方法对合成断层结构进行重力异常分析，可以得出以下事实：只要断面将断层平面一分为二，断层结构的估计参数就与其走向长度无关。如果剖面无法将走向长度一分为二，则必须考虑剖面与断层平面原点的偏移量才能可靠地解释。印度Chintalpudi次流域的模拟抛物线密度函数用于解释Aswaraopet主断层的重力异常。估计的结构产生了与井眼信息一致的地质上合理的模型。

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