大地测量与地球动力学2017，Vol.37Issue(3)：246-250,5.DOI:10.14075/j.jgg.2017.03.006
利用布格重力资料研究华北裂陷盆地地壳结构特征
Characteristics of the Crustal Structure in North China Rift-Depression Basin Using Bouguer Gravity Data
摘要
Abstract
Using 1∶500 000 Bouguer gravity anomalies data in north China,decomposed with the multi-scale wavelet transform method,we obtain the gravity anomaly from anomalous density bodies of varying scales between the earth surface and the upper Moho.By discussing details of wavelet transform of different orders and the corresponding geological tectonic features,we find the existence of an obvious corresponding relationship between the uplift and depression of north China rift-depression basin and gravity anomaly and present their extended depths.Analysis shows rocks on the two sides of the deep large fracture in the north China rift-depression basin vary widely in density and their fracture depth is inferred.With the method of Parker inversion in the Moho interface (29-42 km) in north China,it can be seen that there is an obvious crustal thickness gradient zone in the junction area between Taihang mountains and the north China plain.关键词
华北裂陷盆地/布格重力异常/小波多尺度分解/地壳结构特征Key words
north China rift-depression basin/Bouguer gravity anomaly/wavelet multi-scale decomposition/characteristics of crustal structure分类
天文与地球科学引用本文复制引用
徐志萍,方盛明,李德庆,姜磊,杨利普,李怡青..利用布格重力资料研究华北裂陷盆地地壳结构特征[J].大地测量与地球动力学,2017,37(3):246-250,5.基金项目
国家自然科学基金(41274113) （41274113）
中国地震局地球物理勘探中心青年基金(YFGEC2014008、YFGEC2016008).National Science Foundation of China,No.41274113 （YFGEC2014008、YFGEC2016008）
Young Foundation of Geophysical Exploration Center,CEA,No.YFGEC2014008,YFGEC2016008. （）
