The movement of carbon between the atmosphere, oceans and continents or carbon cycle regulates Earth s climate, with the ocean playing a major role in carbon sequestration. A new study finds that the shape and depth of the ocean floor explain up to 50% of the changes in depth at which carbon has been sequestered there over the past 80 million years. While these changes have been previously attributed to other causes, the new finding could inform ongoing efforts to combat climate change through marine carbon sequestration.
The common model for hotspots is that they are made by mantle plumes on tectonic plates. But many of these hotspots seem to be too cool for that to be true.
(Inside Science) The hotspots that created volcanic islands such as those of Hawaii, Iceland and the Galapagos Islands may often prove surprisingly cool, a new study finds. These findings suggest that such hotspots may not always originate from giant plumes of scorching hot rock welling up from near Earth's core as previously thought, scientists noted.
A new study finds that hotspots that volcanic islands, like Hawaii, Iceland, and Galapagos Islands created may often prove surprisingly cool, which suggests current theories on volcanism may just be too simple.