When internal waves up to 300 feet first form they cause a mighty churning of ocean waters – something invisible to and unfelt by anyone at the surface.
Maps, the first of their kind, show energy of internal waves carried away from where they originated. The larger and longer the arrows (vectors) the more energy is being carried away from where the waves originated. The upper map shows that, in general, internal waves generated by storms move through the ocean depths toward the mid-latitudes. The lower maps shows energy moving directly away from places where tidal forces have created internal waves.Graphic credit required: University of Washington/Nature
Now in a novel use of mooring data, some of it three decades old, a University of Washington researcher has calculated just how much punch these waves appear to carry as they travel, or propagate, thousands of miles from where they originate.
Its energy that appears to be crucial to the conveyor-belt-like circulation wherein millions of cubic meters of icy-cold water sink each second at high latitudes and are driven to upwell at lower latitudes. Without such upwelling, global ocean circulation would stall, causing the entire ocean to fill with cold water. Further, nutrients that have drifted down to the ocean depths would remain in the deep instead of being carried back to surface waters for use by plankton, the tiny plants and animals on which all other marine life depend and which greatly affect how much carbon dioxide is absorbed and released by the oceans.
Sandra Hines | EurekAlert!
Volcanoes and glaciers combine as powerful methane producers
20.11.2018 | Lancaster University
Massive impact crater from a kilometer-wide iron meteorite discovered in Greenland
15.11.2018 | Faculty of Science - University of Copenhagen
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
20.11.2018 | Life Sciences
20.11.2018 | Life Sciences
20.11.2018 | Physics and Astronomy