...垂直二阶导数； 误差传递系数[gap=901]ds: Spectrum estimate； Stochastic noise； Data processing； Downward coutinuation； Vertical second derivative； Coefficient of error transfer..
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It is a new method that calculate vertical second derivative of gravity anomalies based on discrete cosine transform (DCT).
基于离散余弦变换(DCT)的重力异常垂向二阶导数的计算方法是笔者提出的新方法。
The checks by the vertical first derivative and second derivative anomalies reduced to the pole show good coincidence, which proves the reliability of the shallow layer anomaly.
经过化极垂向一次导数和垂向二次导数的验证，吻合很好，说明浅部异常的可信度高。
The Second vertical derivative of the potential field is obtained from Lapace's equation.
位场垂向二次导数是基于拉氏方程求得的。
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