Upper mantle convection driving by density anomaly and a test model

作     者：傅容珊 王景赟 常筱华 黄建华 戴志阳 查显杰 

作者机构：School of Earth and Space Science University of Science and Technology of China 

出 版 物：《Acta Seismologica Sinica(English Edition)》 (ACTA SEISMOLOGICA SINICA)

年 卷 期：2005年第18卷第1期

页      面：27-33,124页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0707[理学-海洋科学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：National Natural Science Foundation of China (40274033) the Project of Knowledge Innovation Program of Chinese Academy of Sciences (KZCX3-SW-131) 

主　　题：mantle convection dynamics seismic tomography 

摘      要：A mathematic-physical convection model in upper mantle is established in this paper. This model is in a three dimensional frame. Assume that the density anomalies, which are mapped from the seismic tomography data, are responding to the temperature perturbation in the connective system. This model takes the density anomalies as the driving force for the mantle convection. We solve the basic equations with different boundary conditions in a domination of wave number by using the FFT arithmetic. In order to test the validity of our theory and method two simple models (higher-lower density body and break off slab) are employed to calculate their flow patters in this paper. Results show that our method can be directly used to investigate the upper mantle convection patterns and its related problems of lithospheric dynamics.