Jonassen Island (Irizar, isla)
Jonassen Island is one of several Antarctic islands around the peninsula known as Graham Land, which is closer to South America than any other part of that continent. It is volcanic in origin and part of the James Ross Island Volcanic Group.
It is said to be a particularly rocky island, 4.1 km long. It is located north of Andersson Island.
It was first named Irizar Island by Otto Nordenskiöld in honor of the Argentine captain whose ship Uruguay rescued the Swedish Antarctic Expedition in 1903 after their ship Antarctic had been crushed by ice. A year later, another island elsewhere in the Antarctic was named Irizar and, because that was a larger island and the name was in broad use for the location, the smaller island was renamed for Ole Jonassen, who accompanied Nordenskiöld on his two major sledge journeys in 1902–3.
The main life form on the island are gentoo penguins and kelp gulls. Both species have established breeding colonies on the island. Adélie and chinstrap penguins as well as pintado and snow petrels have been observed around or flying about the island. A 1901 observation listed the Adélie as having nested on the island; the claim has not been substantiated in modern surveys.
* Chaucheprat Point
* Yalour Sound
It is said to be a particularly rocky island, 4.1 km long. It is located north of Andersson Island.
It was first named Irizar Island by Otto Nordenskiöld in honor of the Argentine captain whose ship Uruguay rescued the Swedish Antarctic Expedition in 1903 after their ship Antarctic had been crushed by ice. A year later, another island elsewhere in the Antarctic was named Irizar and, because that was a larger island and the name was in broad use for the location, the smaller island was renamed for Ole Jonassen, who accompanied Nordenskiöld on his two major sledge journeys in 1902–3.
The main life form on the island are gentoo penguins and kelp gulls. Both species have established breeding colonies on the island. Adélie and chinstrap penguins as well as pintado and snow petrels have been observed around or flying about the island. A 1901 observation listed the Adélie as having nested on the island; the claim has not been substantiated in modern surveys.
* Chaucheprat Point
* Yalour Sound
Map - Jonassen Island (Irizar, isla)
Map
Country - Antarctica
Antarctica is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of 14200000 km2. Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of 1.9 km.
Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over 200 mm along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost 60 m. Antarctica holds the record for the lowest measured temperature on Earth, −89.2 C. The coastal regions can reach temperatures over 10 C in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation occurs, it is mostly in the form of lichen or moss.
Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over 200 mm along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost 60 m. Antarctica holds the record for the lowest measured temperature on Earth, −89.2 C. The coastal regions can reach temperatures over 10 C in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation occurs, it is mostly in the form of lichen or moss.