Using three-dimensional tomographic imaging results of 2°×2°grid S wave velocity and 15′×15′ grid average gravity anomaly in North China,this paper adopted inversion with constrained least squares method and,as a result,obtained density distribution results of six bedding surfaces in lithosphere of North China.The inversion results indicate the following phenomena: the lithosphere density beneath North China area is extremely inhomogeneous,which is the reflection of the feature of violent tectonic movement;the density distribution is coherent with tectonic;the density is different in different tectonic units;there are low density regions in the crust;the strong earthquakes in North China region mainly occur at this depth.
方剑. 华北地区岩石圈三维密度分布[J]. 物探与化探, 1999, 23(3): 179-184.
Fang Jian . THREE-DIMENSIONAL DENSITY DISTRIBUTION OF LITHOSPHERE IN NORTH CHINA. Geophysical and Geochemical Exploration, 1999, 23(3): 179-184.
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