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South Shetland Islands

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The South Shetland Islands are a group of Antarctic islands located in the Drake Passage. They sit north of the Antarctic Peninsula and southwest of the South Orkney Islands. This archipelago includes 11 major islands and several smaller ones. Most of the land area is covered by permanent glaciers. Between 80% and 90% of the islands are covered in ice and snow. The highest point is Mount Foster on Smith Island, which rises 1,054 meters above sea level.

Byers Peninsula, Devils Point
Byers Peninsula, Devils Point

The islands are shaped by volcanic activity and tectonic movements. They are associated with the Bransfield Rift, a geological feature in the region. Various volcanoes show activity from the Quaternary period. These include sites like Deception Island, Sail Rock, and Melville Peak. Most of the volcanic rock is basalt or basaltic andesite. However, Deception Island is different because its tephra is trachyte and basaltic trachyandesite. These rocks are richer in potassium and sodium than other volcanic products in the area.

Deception-Tourists
Deception-Tourists

The climate in the South Shetlands is extremely cold and humid. Although they are at the same distance from the Equator as the Faroe Islands, they are much colder. This is because they are so close to the Antarctic continent. The sea around the islands is often blocked by ice from April to December. For eight months of the year, the average temperature stays below 0°C. Summer temperatures average around 0°C, while winter temperatures drop to about -15°C. Strong westerly winds blow across the islands during every season.

Byers Peninsula, Camp Byers
Byers Peninsula, Camp Byers

History shows that these islands were a place of discovery and intense industry. British mariner William Smith discovered the islands in 1819 while sailing the brig Williams. He sighted Livingston Island, which was the first land ever found south of 60° latitude. Other explorers like Edward Bransfield surveyed and mapped the area shortly after. The discovery led to a massive sealing era between 1820 and 1908. During this time, 197 vessels were recorded visiting the islands. Many of these ships, such as the Espirito Santo, arrived to hunt for seals and whales. Twelve of these vessels were eventually wrecked on the shores.

Despite the freezing environment, the islands support a specific type of life. They belong to the Scotia Sea Islands tundra ecoregion. This region includes South Georgia and the South Sandwich Islands. The vegetation is limited to mosses, lichens, and algae. The surrounding waters provide food for seabirds, penguins, and seals. One of the most notable animals is the Southern elephant seal. There is even a tiny flying insect called Parochlus steinenii that lives this far south.

Today, the islands are important for international science and tourism. Under the Antarctic Treaty of 1959, the sovereignty of the islands is neither recognized nor disputed. The treaty states that Antarctica is protected for peace and science. Three countries have made claims to the islands: the United Kingdom, Chile, and Argentina. Currently, 16 different research stations operate across the archipelago. Chile maintains the greatest number of these stations. Many are located on King George Island near the Eduardo Frei airfield.

Villa-Las-Estrellas-Antarctica
Villa-Las-Estrellas-Antarctica
St.-Kliment-Ohridski-Base-2012-2
St.-Kliment-Ohridski-Base-2012-2

Many different nations use these islands to study the Earth's systems. For example, the Bulgarian station St. Kliment Ohridski is a summer base. The Chilean station Carlini operates year-round. These stations allow scientists to monitor glacier retreat and climate changes. During the southern summer, the islands also become a popular destination for tourists. Visitors can explore the unique landscapes, such as the warm volcanic baths at Deception Island. This makes the South Shetland Islands a vital link between history, science, and the natural world.

Deception-Tourists
Deception-Tourists
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🖼️ Images & Media (6)
File:SouthShetland-2016-Livingston Island (Hannah Point)–Southern elephant seal (Mirounga leonina) 01.jpg
SouthShetland-2016-Livingston Island...
File:Byers Peninsula, Devils Point.jpg
Byers Peninsula, Devils Point.jpg
File:Deception-Tourists.jpg
Deception-Tourists.jpg
File:Villa-Las-Estrellas-Antarctica.JPG
Villa-Las-Estrellas-Antarctica.JPG
File:St.-Kliment-Ohridski-Base-2012-2.jpg
St.-Kliment-Ohridski-Base-2012-2.jpg
File:Byers Peninsula, Camp Byers.jpg
Byers Peninsula, Camp Byers.jpg
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