Upper mantle convection driving by density anomaly and a test model

被引：0

作者：

Fu, Rong-Shan ^{[1
]}

Wang, Jing-Yun ^{[1
]}

Chang, Xiao-Hua ^{[1
]}

Huang, Jian-Hua ^{[1
]}

Dai, Zhi-Yang ^{[1
]}

Zha, Xian-Jie ^{[1
]}

机构：

[1] Sch. of Earth and Space Science, Univ. of Sci. and Technol. of China

来源：

Acta Seismologica Sinica English Edition | 2005年 / 18卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Dynamics; Mantle convection; Seismic tomography;

D O I：

10.1007/s11589-005-0003-2

中图分类号：

学科分类号：

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.

引用

页码：27 / 33

页数：6

共 9 条

[1]

Anderson D L, The scales of mantle convection [J], Tectonophysics, 284, pp. 1-17, (1998)

[2]

Anderson O L, Schreiber E, Liebermann R C, Some elastic constant data on minerals relevant to geophysics [J], Rev Geophys Space Phys, 6, pp. 491-524, (1968)

[3]

Baudry N, Kroenke L, Intermediate-wavelength (400–600 km), South Pacific geoid undulations: Their relationship of linear volcanic chains [J], Earth Planet Sci Lett, 102, pp. 430-443, (1991)

[4]

Calcagno P, Cazenave A, Present and past regional ridge segmentation: Evidence in geoid data [J], Geophys Res Lett, 20, pp. 1 895-1 998, (1993)

[5]

Chandrasekhar U, Hydrodynamic and Hydromagnetic Stability [M], pp. 625-625, (1961)

[6]

Dubuffet F, Rabinowicz M, Monnereau M, Multiple scales in mantle convection [J], Earth Planet Sci Lett, 178, pp. 351-366, (2000)

[7]

Fu R S, Huang J H, Wei Z X, The upper mantle flow beneath the North China platform [J], Pure Appl Geophys, 146, 3/4, pp. 649-659, (1996)

[8]

Fu Rong-shan, Chang Xiao-hua, Huang Jian-hua, Small scale convection in the upper mantle constrained on the regional isostatic gravity anomalies [J], Chinese J Geophys, 37, Suppl., pp. 249-258, (1994)

[9]

Fu Rong-shan, Huang Jian-hua, Liu Wen-zhong, Correlation equation between regional isostatic gravity anomalies and small scale mantle convection [J], Chinese J Geophys, 37, 4, pp. 638-646, (1994)

← 1 →