Application of gravity imaging to geothermal exploration
In the exploration of geothermal water in China,gravity method comes to be a major method because of its sensitivity to linear structure,especially to the fault,and the high efficiency to planimetric exploration.In order to improve the effect of gravity method exploration,imaging technology is often used for extracting the implicative information the survey data.Two successful case histories of applied gravity imaging technology to geothermal exploration are presented in this paper.Different kind of imaging technology,planar imaging and pseudo-depth imaging based on wavelet analysis,were used to respective case.In the case of planar imaging,the gravity anomaly was converted with a suited grid density to a value of the grayscale or brightness.Then we can display the gravity anomalies using the converted result.This kind of imaging technology was used to the first case history for mapping the fault and the boundary of the high-density rock.The pseudo-depth imaging was used to another case history for mapping the variation with its buried depth of a fault.1-d continuous wavelet analysis was used for generating the pseudo-depth value of the gravity profile.This is only an experiment although the result was concordant to which of the CSAMT in the same site.
Lanfang He Xuejun Liu Weili Li Zhanxiang He Xuben Wang Jingming Song
BGP,China National Petroleum Corporation,Zhuozhou 072756,China Chengdu University of Technology,Chengdu 610059,China
国际会议
The 3rd International Conference on Environmental and Engineering Geophysics(第三届环境与工程地球物理国际会议)
武汉
英文
469-472
2008-06-15（万方平台首次上网日期，不代表论文的发表时间）