Amundsen Basin Basin formed during the Cenozoic Era from seafloor spreading. Amundsen Basin The Amundsen Basin, with depths up to 4.4 km, is the deepest abyssal plain in the Arctic Ocean. The Amundsen Basin is embraced by the Lomonosov Ridge (from to ) and the Gakkel Ridge (from to ). It is named after the polar researcher Roald Amundsen. Together with the Nansen Basin, the Amundsen Basin is often summarized as Eurasian Basin. The Russian-American cooperation Nansen and Amundsen Basin Observational System (NABOS) aims "to provide a quantitative observationally based assessment of circulation, water mass transformations, and transformation mechanisms in the Eurasian
Fridtjof Nansen and after two false starts, Nansen and Johansen began their journey on 14 March 1895. Nansen allowed 50 days to cover the to the pole, an average daily journey of . After a week of travel, a sextant observation indicated they averaged per day, which put them ahead of schedule. However, uneven surfaces made skiing more difficult, and their speeds slowed. They also realised they were marching against a southerly drift, and that distances travelled did not necessarily equate to distance progressed. On 3 April, Nansen began to doubt whether the pole was attainable. Unless their speed improved, their food