Ratio Method for Calculating the Source Location of Gravity and Magnetic Anomalies Based on Deep Learning

The location of field source's center is one important purpose in the inversion of gravity and magnetic data, and the location of geological body is estimated mainly through the linear equation between the anomaly and the location of the field source. In order to obtain the location accurately and quickly, a deep learning technique based on the ratio of gravity and magnetic gradient is proposed to achieve the acquisition of the field source location in this paper, which can calculate the field source location quickly by using the deep learning technique to learn the relationship between the horizontal distribution of the gravity and magnetic gradient ratio, the buried depth, and the index. It is also proposed to use the mutual relationship of multiple values to calculate the information of the geological body more accurately and stably. This method can calculate the center location of complex geological bodies, and avoid the complicated process of screening the results of the previous methods, using the deep learning method of analytic signal for magnetic anomaly with remanent magnetism to achieve the location inversion. The application effect of the method is tested by theoretical models, which shows that the proposed method can obtain the depth information of the geological body accurately. Comparing the calculation results of the deep learning of more points, it is found that the use of multiple extreme points of different proportions can reduce the interference by noise and can get a location more accurately, so the method has good practicability.