摘要
根据模型分解的思想，采用变密度多层地壳密度模型，据此推导了相应的重力异常正演计算公式。以遗传算法为基础，结合上述重力异常正演公式，形成了地壳多层密度结构的遗传反演方法。利用多种深部地球物理资料，采用正演拟合与遗传反演相结合的方法得到了郑州～临汾剖面的地壳密度结构。根据所得结果，对该剖面的重力异常机制做了分析。
The variable density multilayered crustal model is put forward according to the idea of model decompose in this paper, and the corresponding gravity forward formula is deduced. The genetic inversionmethod of multilayered crustal structure is pressented based on genetic algorithms and combined withthe above-mentioned formula. The crustal density structure along the Zhengzhou -Ling fen profile isobtained by means of forward modeling and inversion, and, the mechanism of gravity anomaly is analyzed according to the obtained results.
出处
《华北地震科学》
1997年第4期10-17,共8页
North China Earthquake Sciences
基金
国家地震局合同制项目!(90410806)资助
