| 梯度法解释复杂二维断裂重力异常 |
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| 引用本文： | 魏伟,刘天佑.梯度法解释复杂二维断裂重力异常[J].物探与化探,2005,29(4):347-350. |
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| 作者姓名： | 魏伟 刘天佑 |
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| 作者单位： | 中国地质大学,地球物理与空间信息学院,湖北,武汉,430074 |
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| 摘 要： | 对以往的二维断裂重力异常的梯度解释方法作了几点改进:①采用最小二乘拟合方法求取台阶倾角α;②直接利用台阶倾角与台阶的水平边界位置来计算台阶的埋深;③将重力二维梯度解释方法推广到复杂断裂模型的解释。文中详细论述了这种方法的原理, 给出了其具体实现步骤。该方法比起以往重力梯度解释方法, 应用更加简便而且解释结果更加稳定。用该法成功地解释了某油气盆地的实测重力资料。
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| 关 键 词： | 重力异常 梯度法 倾斜台阶 复杂断裂 |
| 文章编号： | 1000-8918（2005）04-0347-04 |
| 收稿时间： | 08 11 2004 12:00AM |
| 修稿时间： | 2004-08-11 |
THE APPLICATION OF THE GRADIENT METHOD TO THE INTERPRETATION OF GRAVITY ANOMALIES OF TWO-DIMENSIONAL FAULTS |
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| WEI Wei,LIU Tian-you.THE APPLICATION OF THE GRADIENT METHOD TO THE INTERPRETATION OF GRAVITY ANOMALIES OF TWO-DIMENSIONAL FAULTS[J].Geophysical and Geochemical Exploration,2005,29(4):347-350. |
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| Authors: | WEI Wei LIU Tian-you |
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| Institution: | Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | In this paper, some improvements have been made on the traditional gradient interpretation methods for the two-dimensional fault gravity anomalies: ① The least squares fitting technique is adopted to figure out the dip angleαof the step; ② The dip angle and the horizontal boundary of the step are directly used to calculate the burial depth of the step; ③ the interpretation method for gravity two-dimensional gradient is extended to the interpretation of the complex fault model. The principle and operation means of this method are dealt with in detail in this paper. Compared with the traditional gravity gradient interpretation methods, this method is simpler and yields more stable interpretation results. With this method, the measured gravity data from a certain oil and gas basin were successfully interpreted. |
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| Keywords: | gravity anomaly gradient method tilted step complex fault |
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