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| Whittaker, Joanne M.; Muller, R. Dietmar; Roest, Walter; Wessel, Paul; Smith, Walter H. F.. |
| Seafloor roughness varies considerably across the world's ocean basins and is fundamental to controlling the circulation and mixing of heat in the ocean(1) and dissipating eddy kinetic energy(2). Models derived from analyses of active mid- ocean ridges suggest that ocean floor roughness depends on seafloor spreading rates(3), with rougher basement forming below a half- spreading rate threshold of 30 - 35 mm yr(-1) ( refs 4, 5), as well as on the local interaction of mid- ocean ridges with mantle plumes or coldspots(6). Here we present a global analysis of marine gravity- derived roughness, sediment thickness, seafloor isochrons and palaeo-spreading rates(7) of Cretaceous to Cenozoic ridge flanks. Our analysis reveals that, after eliminating effects related... |
| Tipo: Text |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6219.pdf |
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