The Complex Geometry Of The Gravity And Magnetic Marquardt Algorithm-based Three-dimensional Global Inversion

With the extent of exploration higher and higher , it becomes an important issue at present to study how to find deep ore because the shallow beds were less and less . As one of the effective geophysical exploration methods , Gravity and magnetic method is widely used in mineral resources exploration and geological moving analysis in the past or future . The filed using this methods is in continuous , the survey space is expand to ground of high-precision from the space-measure . It is developed into high-density and high-precision in recent yeas . With the rapid development of the technique of electronics and computer , and the springing up of intelligent equipment, the quality of the filed data acquisition has been raised , and more advanced technique for the interpretation of gravity and magnetic data are needed correspondingly. Although we can use 2-D forward and inversion to solve problems in work, the method is not adapted with 3-D modeling and inversion method in practice because some crucial problems, such as precision and speed of calculation, have not been solved.In this paper , for the problem of 3-D inversion , the author has been worked in some fields that based on the study of foregone and absorbed some of the theories .Firstly , the study of building up the compute model that can be deposed freely and simply , we divided the 3-D model into two classifies by the means of the physical character and geometry character , and disassembled the model into transverse and lengthways groups , at the same time , we think the 3-D model of any physical and geometry character is consist of different transverse and lengthways groups all the time .To all abnormities we conceive them caused by the acclivitous allegrettos that might construct all needed 3-D complex model , and in this paper we proved the possibility and positive significance for 3-D inversion on acclivitous allegrettos to construct all needed 3-D complex model .Secondly , the author introduced the foregone technique of 2-D Marquardt algorithmic to 3-D full scale inversion about magnetic and gravity , and arrived at some new ideas on the algorithmic . For example , the author combined the generalized athwart and Marquardt algorithmic to conquer no constringency or slowly constringency owing to some oddity points that happened in conventional Marquardt algorithmic .At the same time , the technical can be avail to solve the super-equations while in Gauss algorithmic the difficulties can not be settled .Lastly , the author build up the technical about gravity and magnetic 3-D inversion that based on Marquardt algorithmic .In this...