Advantages of horizontal directional Theta method to detect the edges of full tensor gravity gradient data

作者：Yuan, Yuan^*; Gao, Jin-Yao; Chen, Ling-Na

来源：Journal of Applied Geophysics, 2016, 130: 53-61.

DOI：10.1016/j.jappgeo.2016.04.009

• Full tensor gravity gradient data
• Horizontal directional Theta method
• Edge detection

Full tensor gravity gradient data contain nine signal components. They include higher frequency signals than traditional gravity data, which can extract the small-scale features of the sources. Edge detection has played an important role in the interpretation of potential-field data. There are many methods that have been proposed to detect and enhance the edges of geological bodies based on horizontal and vertical derivatives of potential field data. In order to make full use of all the measured gradient components, we need to develop a new edge detector to process the full tensor gravity gradient data. We first define the directional Theta and use the horizontal directional Theta to define a new edge detector. This method was tested on synthetic and real full tensor gravity gradient data to validate its feasibility. Compared the results with other balanced detectors, the new detector can effectively delineate the edges and does not produce any additional false edges.

• 出版日期2016-7
• 单位吉林大学; 国家海洋局第二海洋研究所