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The Nansen bottle (originally of brass metal) is designed for the capture of water deep in the ocean. It is essentially an open tube with a wide valve at each end connected together by a solid rod. A bottle is attached to the cable at its bottom using a clamping design and at its top by a tripping mechanism.
Fridtjof Wedel-Jarlsberg Nansen (Norwegian: [ˈfrɪ̂tːjɔf ˈnɑ̀nsn̩]; 10 October 1861 – 13 May 1930) was a Norwegian polymath and Nobel Peace Prize laureate. He gained prominence at various points in his life as an explorer, scientist, diplomat, humanitarian and co-founded the Fatherland League.
Internal waves are the source of a curious phenomenon called dead water, first reported in 1893 by the Norwegian oceanographer Fridtjof Nansen, in which a boat may experience strong resistance to forward motion in apparently calm conditions. This occurs when the ship is sailing on a layer of relatively fresh water whose depth is comparable to ...
This phenomenon was first observed at the surface by the Norwegian oceanographer Fridtjof Nansen during his Fram expedition. He noticed that icebergs did not drift in the same direction as the wind. His student, the Swedish oceanographer Vagn Walfrid Ekman, was the first person to physically explain this process. [2]
Nansen's experience led him to request physicist and meteorologist Vilhelm Bjerknes to study it scientifically. Bjerknes had his student, Vagn Walfrid Ekman , investigate. Ekman, who later described the effect now bearing his name as the Ekman spiral , demonstrated the effect of internal waves as being the cause of dead water.
Toggle Oceanography subsection. 4.1 Water flow. 4.2 Sea ice. 5 Climate. 6 Biology. ... Fridtjof Nansen was the first to make a nautical crossing of the Arctic Ocean, ...
Ekman developed the theory of the Ekman layer after Fridtjof Nansen observed that ice drifts at an angle of 20°–40° to the right of the prevailing wind direction while on an Arctic expedition aboard the Fram. Nansen asked his colleague, Vilhelm Bjerknes to set one of his students upon study of the
Fram leaves Bergen on 2 July 1893, bound for the Arctic Ocean Period map showing the regions traversed by the expedition [1]. Nansen's Fram expedition of 1893–1896 was an attempt by the Norwegian explorer Fridtjof Nansen to reach the geographical North Pole by harnessing the natural east–west current of the Arctic Ocean.