Application of interpolation cut method to gravity data processing in South China Sea
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摘要:
重力数据处理是进行重力反演和解译的必要环节，其中将区域场和局部场分离对于重力勘探有着重要的作用。相比于其他算法，插值切割法是一个优良的算法，算法中切割半径是一个重要的参数。通过计算比较局部异常和区域异常与原始数据及地形数据的相关性，认为可以通过相关性确定最佳切割半径，应用于南海的重力异常数据分离，并取得良好的分离效果。
Abstract:Gravity data processing is the foundation of gravity inversion and data interpretation. In gravity exploration, it is critical important to separate the local anomalies from the regional field. Compared to other algorithms, the interpolation cut method is an excellent one and the cutting radius is an important parameter to the method. In this paper, we computed the correlation through comparison of the local and regional anomalies as well as the comparison of the original gravity data and the terrain data. The best cutting radius is determined by the correlation. Our practice suggests that the interpolation cut method works well in separating the local fields from the regional in the South China Sea.
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Key words:
- gravity data processing /
- interpolation cut method /
- local field /
- regional field
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