MASS HETEROGENEITIES AND CONVECTION IN THE EARTHS MANTLE INFERRED FROM GRAVITY AND CORE-MANTLE BOUNDARY IRREGULARITIES

被引：5
作者：
CADEK, O
MATYSKA, C
机构：
[1] Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Praha 8, 180 00
来源：
PURE AND APPLIED GEOPHYSICS | 1991年 / 135卷 / 01期
关键词：
GRAVITY ANOMALIES; CORE-MANTLE BOUNDARY; MANTLE HETEROGENEITIES; MANTLE CONVECTION; MANTLE DYNAMICS;
D O I：
10.1007/BF00877012
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Mass heterogeneities in the earth's mantle are retrieved from the gravity data and the topography of the core-mantle boundary as well as the topography of the earth's surface. A mantle circulation induced by the heterogeneities is modelled by solving the Stokes problem for incompressible Newtonian fluid. The derived models of mantle motions correlate well with the plate tectonics and point at a close relation between the surface tectonic activity and the processes in the vicinity of the core-mantle boundary.
引用
收藏
页码：107 / 123
页数：17
相关论文
共 25 条
[1]  
BAUMGARDNER JR, 1988, APPL SUPERCOMP 3D MA, P199
[2]   SPHERICAL TENSOR APPROACH TO THE SOLUTION OF THE MANTLE STRESS PROBLEM [J].
CADEK, O .
STUDIA GEOPHYSICA ET GEODAETICA, 1989, 33 (02) :177-197
[3]  
CADEK O, 1988, P SEMINAR LIBLICE, P119
[4]   ASPHERICAL STRUCTURE OF THE CORE-MANTLE BOUNDARY FROM PKP TRAVEL-TIMES [J].
CREAGER, KC ;
JORDAN, TH .
GEOPHYSICAL RESEARCH LETTERS, 1986, 13 (13) :1497-1500
[5]   MODELS OF THE CORE-MANTLE BOUNDARY AND THE TRAVEL-TIMES OF INTERNALLY REFLECTED CORE PHASES [J].
DOORNBOS, DJ ;
HILTON, T .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1989, 94 (B11) :15741-15751
[6]   MAPPING THE LOWER MANTLE - DETERMINATION OF LATERAL HETEROGENEITY IN P-VELOCITY UP TO DEGREE AND ORDER-6 [J].
DZIEWONSKI, AM .
JOURNAL OF GEOPHYSICAL RESEARCH, 1984, 89 (NB7) :5929-+
[7]   PRELIMINARY REFERENCE EARTH MODEL [J].
DZIEWONSKI, AM ;
ANDERSON, DL .
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 1981, 25 (04) :297-356
[8]   PLATE-TECTONICS AND ASPHERICAL EARTH STRUCTURE - THE IMPORTANCE OF POLOIDAL-TOROIDAL COUPLING [J].
FORTE, AM ;
PELTIER, WR .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1987, 92 (B5) :3645-3679
[9]   LOWER MANTLE HETEROGENEITY, DYNAMIC TOPOGRAPHY AND THE GEOID [J].
HAGER, BH ;
CLAYTON, RW ;
RICHARDS, MA ;
COMER, RP ;
DZIEWONSKI, AM .
NATURE, 1985, 313 (6003) :541-546
[10]  
HANSEN U, 1990, ANN GEOPHYS, P68
123