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Thermal and mechanical structure of the upper mantle: a comparison between continental and oceanic models
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schubert, G. Froidevaux, C. Yuen, D. A. |
| Copyright Year | 1976 |
| Description | Temperature, velocity, and viscosity profiles for coupled thermal and mechanical models of the upper mantle beneath continental shields and old ocean basins show that under the continents, both tectonic plates and the asthenosphere, are thicker than they are beneath the oceans. The minimum value of viscosity in the continental asthenosphere is about an order of magnitude larger than in the shear zone beneath oceans. The shear stress or drag underneath continental plates is also approximately an order of magnitude larger than the drag on oceanic plates. Effects of shear heating may account for flattening of ocean floor topography and heat flux in old ocean basins. |
| File Size | 2712511 |
| Page Count | 40 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760022699 |
| Archival Resource Key | ark:/13960/t74v1cx13 |
| Language | English |
| Publisher Date | 1976-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Viscosity Earth Planetary Structure Ocean Models Earth Mantle Continental Shelves Shear Stress Temperature Profiles Asthenosphere Velocity Distribution Tectonics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
