Field source depth obtaining method based on potential field data downward continuation
A data and potential field technology, applied in the field of geophysical geological resource exploration, can solve the problems of upward continuation and lower data resolution, and achieve the effect of stable depth continuation characteristics, favorable promotion and popularization, and accurate depth calculation effect
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Embodiment 1
[0047] Such as figure 1 The magnetic anomaly data map of the two infinitely extending plate-shaped objects is shown, the magnetization inclination angle is set to 0°, the magnetization declination angle is -60°, and the top surface of the two infinitely extending plate-shaped objects is 10m and 20m from the ground surface respectively. The inclination angles are 120° and 60° respectively, and the magnetic susceptibility are 50 and 100 respectively, the magnetic anomalies produced are as follows figure 1 shown. The method of the invention is used for depth calculation. According to the calculation process, the analytical signal of the magnetic anomaly is obtained first, and after calculation, the following is obtained: figure 2 Parsed signal data shown.
[0048] Adopt the method of the present invention to carry out the Chebyshev-Padé downward continuation depth calculation after the improved analysis signal data, and carry out normalization processing to the calculation re...
Embodiment 2
[0050] In order to further verify the effect of the method of the present invention, two spheres with different buried depths are used to calculate the gravity data, and the calculation results of the present invention are also compared with the traditional regularized downward continuation calculation results. Such as Figure 5 Shown are the gravity data anomalies of two sphere models, the spheres have radii of 10m and 15m respectively, the distances from the ground are 30m and 90m respectively, and the residual density is 1g / cm 2 , the magnitude of the gravity anomaly generated becomes smaller with the increase of depth, and the magnitude of the deep sphere is smaller. Carrying out the deep calculation of the model data in the present invention, firstly carry out the analysis signal calculation, and obtain such as Image 6 Parsed signal data shown. Further, the method of the present invention is used to calculate the depth of the Chebyshev-Padé downward extension of the an...
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