高校地质学报Issue(2)：268-276,9.
松辽盆地布格重力异常小波多尺度分解与解释
Interpretations of Bouguer Gravity Anomaly with the Method of Wavelet Multi-scale Decomposition(WMD) in Songliao Basin, Northeast China
摘要
Abstract
The Songliao Basin is one of the typical basins among the NE China Basin Groups. The main structural trending of gravity anomaly field is NNE to NE, and the study area shows a significant feature of deep collage-type pattern. Accordingly, the region is divided into five subregions with different features of gravity anomalies. The gravity field of NE China Songliao Basin is separated, using the WMD method with the 4th separation order, the apparent depth of the anomalies in each order is determined using the Logarithmic PSA. The shallow high-frequency anomalies are then removed to obtain the regional gravity anomalies. Through the hierarchical analyses, we learned the characters of the irregularity of the shallow crust, basement, and the crustal deep interfaces, and identified 14 depressions of the basement while drawing a depth map of Moho discontinuity. The geophysical characteristics of Songliao Basin reveal its deep structures, which provide an important basis for oil-gas exploration and studying tectonic evolution.关键词
区域重力异常分离/松辽盆地/盆地基底/Moho面/小波多尺度分解/对数功率谱Key words
regional gravity anomaly separation/Songliao Basin/Basin basement/Moho depth/wavelet multi-scale decomposition/power spectrum analysis分类
天文与地球科学引用本文复制引用
李长波,王良书,孙斌..松辽盆地布格重力异常小波多尺度分解与解释[J].高校地质学报,2014,(2):268-276,9.基金项目
国家重大油气专项(2011ZX05009-001)资助 （2011ZX05009-001）
