There are two main types of polynyas: coastal polynyas, which can be found year-round near the Antarctic and Arctic coasts and are mainly created by strong winds pushing the ice away from the coast, and mid-sea or open-ocean polynyas, which may be found more sporadically in the middle of ice pack in certain locations, especially around Antarctica.

Polynesia is characterized by a small amount of land spread over a very large portion of the mid- and southern Pacific Ocean. It comprises approximately 300,000 to 310,000 square kilometres (117,000 to 118,000 sq mi) of land, of which more than …

polynya, a semipermanent area of open water in sea ice. Polynyas are generally believed to be of two types. Coastal polynyas characteristically lie just beyond landfast ice, i.e., ice that is anchored to the coast and stays in place throughout the winter.

The North Water Polynya (NOW), or Pikialasorsuaq[2] to Inuit in Greenland and Sarvarjuaq[3] to Inuit in Canada, is a polynya (area of year-round open water surrounded by sea ice) that lies between Greenland and Canada in northern Baffin Bay.

2024年5月4日 · Polynyas are larger, persistent open water areas within sea ice, found either along coastlines (coastal polynyas) or in the open ocean (open-ocean polynyas). They can last from several days to entire seasons. Leads are narrower fractures in sea ice.

2017年4月25日 · Polynya is a Russian word that describes an area of open water surrounded by ice. They are found in both the Arctic and Antarctic in the coastal areas. Such features were …

The meaning of POLYNYA is an area of open water in sea ice.

2019年5月28日 · Sometimes state-sized areas of ice go missing from the middle of the ice pack. This phenomenon is known as a polynya, and scientists have been investigating these features for decades.

2021年10月25日 · The case focused on the open water, called a polynya, which was the effect brought by the strange transition of the ice sheet. The specified polynya measuring 3,000-square-kilometer was charted...

2013年12月31日 · Polynyas are large, persistent regions of open water and thin ice that occur within much thicker pack ice, at locations where climatologically, thick pack ice would be expected.

2025年1月30日 · A polynya is a stretch of unfrozen sea in the middle of an ice sheet. Polynyas can be a place for algae, plankton, and larger animals to thrive, and they represent an …

2019年4月24日 · A new study has unraveled the four decade long mystery surrounding the occurrence of a mid-sea Polynya -- a body of unfrozen ocean that appeared within a thick body of ice during Antarctica's...

2023年9月30日 · Brightening mask for bright and flawless skin to improve acne scars and brightening overall complexion. Good old water, aka H2O. The most common skincare ingredient of all. You can usually find it right in the very first spot of the ingredient list, meaning it’s the biggest thing out of all the stuff that makes up the product.

2023年9月30日 · Soothing mask to reduce redness from acne and irritation. Good old water, aka H2O. The most common skincare ingredient of all. You can usually find it right in the very first spot of the ingredient list, meaning it’s the biggest thing out of all the stuff that makes up the product.

2024年9月17日 · Polynyas play a critical role in the formation of Antarctic Bottom Water and the enhancement of polar primary productivity. Accurate and exhaustive identification of Antarctic polynyas is...

2019年6月10日 · Offshore Antarctic polynyas—large openings in the winter sea ice cover—are thought to be maintained by a rapid ventilation of deep-ocean heat through convective mixing. These rare phenomena may...

Recent climate model predictions indicate that rising levels of atmospheric carbon dioxide may trigger a dramatic shift in phytoplankton communities in the Southern Ocean, according to Kevin Arrigo, Assistant Professor of Geophysics at Stanford University.

Coastal polynias are open water areas which form when strong katabatic winds push the sea ice away from the coast (offshore). They have a strong influence on the heat and energy exchange between ocean and atmosphere since they are a gap in the insulating ice cover. In the polynias, water is cooled down and new ice is formed.

2017年10月19日 · Holes in the Antarctic ice, called polynyas, are not inherently uncommon. According to Rob Sherrell, a professor at Rutgers' Department of Marine and Coastal Studies, there are about 40 "recurring...