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Polar drift is a geological phenomenon caused by variations in the flow of molten iron in Earth's outer core, resulting in changes in the orientation of Earth's magnetic field, and hence the position of the magnetic north- and south poles.
2017: Polar Row, led by Fiann Paul, is the world's most record-breaking expedition (14 Guinness World Records). The team covered 1440 miles measured in a straight line in the Arctic Ocean open waters in a row boat and pioneered ocean rowing routes from Tromsø to Longyearbyen, from Longyearbyen to Arctic Ice Pack (79º55'500 N) and from 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.
The ship did not drift over the North Pole, although in the course of the expedition it became the fourth ship to traverse the North-East Passage, after Nordenskiöld's Vega and the Russian icebreakers Taymyr and Vaygach. [176] Amundsen left the expedition in 1923; the remaining years of his life were largely devoted to polar exploration by air.
A geomagnetic excursion, like a geomagnetic reversal, is a significant change in the Earth's magnetic field.Unlike reversals, an excursion is not a long-term re-orientation of the large-scale field, but rather represents a dramatic, typically a (geologically) short-lived change in field intensity, with a variation in pole orientation of up to 45° from the previous position.
Beginning Saturday, the polar vortex began to dip down into the northern tier of the U.S., dropping temperatures into the single digits. Wind chills dropped into the negative teens for that region.
When the polar vortex is strong, cold air is less likely to plunge deep into North America or Europe. Picture this strong vortex fencing off the coldest air from the U.S. and Europe.
Polar exploration is the process of exploration of the polar regions of Earth – the Arctic region and Antarctica – particularly with the goal of reaching the North Pole and South Pole, respectively. Historically, this was accomplished by explorers making often arduous travels on foot or by sled in these regions, known as a polar expedition.