Current plate velocities relative to hotspots: implications for hotspot motion, mantle viscosity and global reference frame | |
Wang, SM ; Wang, R | |
刊名 | earth and planetary science letters
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2001 | |
关键词 | hot spots plate tectonics mantle convection viscosity models SEISMIC EVIDENCE ATLANTIC HOTSPOTS CONVECTION PLUMES HAWAIIAN HOTSPOT POLAR WANDER PACIFIC SCALE ANTARCTICA KINEMATICS TECTONICS |
DOI | 10.1016/S0012-821X(01)00351-X |
英文摘要 | The HS2-NUVEL1 model being used for current plate velocities relative to hotspots is shown to be generally inconsistent with the observed hotspot data sampled from non-Pacific regions. Instead, we determine the T22A model, which provides a good and consistent fit to the trends of globally distributed hotspot traces, but predicts plate velocities at hotspots systematically lower than the observed rates of hotspot volcanic migrations. As a result, it implies that the return flow in the lower mantle has a velocity about 1/4 of the plate velocity, and that the lower mantle is about 20 times more viscous than the upper mantle. Although hotspots are not relatively fixed, they do define a global reference frame for plate motion and mantle convection. (C) 2001 Elsevier Science B.V. All rights reserved.; Geochemistry & Geophysics; SCI(E); 22; ARTICLE; 3-4; 133-140; 189 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/155462] ![]() |
专题 | 地球与空间科学学院 |
推荐引用方式 GB/T 7714 | Wang, SM,Wang, R. Current plate velocities relative to hotspots: implications for hotspot motion, mantle viscosity and global reference frame[J]. earth and planetary science letters,2001. |
APA | Wang, SM,&Wang, R.(2001).Current plate velocities relative to hotspots: implications for hotspot motion, mantle viscosity and global reference frame.earth and planetary science letters. |
MLA | Wang, SM,et al."Current plate velocities relative to hotspots: implications for hotspot motion, mantle viscosity and global reference frame".earth and planetary science letters (2001). |
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