The Arctic is a region of the planet, north of the Arctic Circle, and includes the Arctic Ocean, Greenland, Baffin Island, other smaller northern islands, and the far northern parts of Europe, Russia (Siberia), Alaska and Canada.

The Arctic is an Arctic, Greenland, Baffin Island, other smaller north islands, and the northernmost region of the Arctic Circle, including the northernmost tip of Europe, Russia (Siberia), Alaska, and Canada.

Incidentally, the Arctic Circle is an imaginary line of 66 degrees north latitude and 30 degrees north latitude, with the southernmost tip of the Arctic as a guide. The climate of Circle is very cold, most areas are always covered with ice.

In the middle of winter, the sun never rises, and high latitude temperature can easily reach low temperature of -50oF. In the summer (and even south), 24 hours of sunshine per day melts the sea and topsoil, which is the main reason that the iceberg fell from the frozen north and floated south, seriously damaging the North Atlantic canal.

The main inhabitants of the Arctic is the total population of over 2 million (all population), including Eskimos (Islam), Sami, Russian. The Eskimos lived in this area for more than 9,000 years, and now they give up on their traditional hunting and fishing jobs working in oil fields and various support villages.

The first explorer in the Arctic Circle was Viking. The Norwegian visited the northern region in the 9th century, and Erik the Red (Icelandic) established settlement in Greenland in 982. In 1909, Robert E. Peary arrived at the North Pole after several attempts by local explorers.

From Alaska to Greenland in northern Canada, many independent but related communities occupy the Arctic region. Inuit and Eskimo such as Netsilik, Copper, Iglulik, Baffin Islanders live in the Arctic Circle. In this area, the singer emphasizes moderate and uses moderately intense and nasal vocal style, decorating the melody with elegant notes, sound pulsations and special breathing techniques. While using a relatively narrow range of melody, the song has a scale of 4 or 5 notes. The rhythm structure includes intentional rhythm shift between sound and drum, use of relationship (keep note of multiple beat), cross rhythm (complex combination of values, especially simultaneous 2 notes and 3 notes grouping ), Split and change rice frequently

Tundra is a wide area in the northern hemisphere of the world. It is also known as "wasteland" and is located mainly in the Arctic Circle, the coasts and islands of the Arctic Ocean, and the northern part of the conifer forest zone. In Canada, the south border extends south of Hudson Bay from McKenzie Delta and extends north-east to Labrador. In North Siberia, tundra is the widest area, reaching at 60 degrees north. Throughout the year, the monthly average temperature in the Tundra region is below freezing, and the average temperature during the growth period is only two weeks per year. Moss is long and cold from winter to summer. It consists of strong wind and snowstorm in winter, it is relatively warm in summer. But even in the hottest day of July the temperature will not exceed 10 ° C

About a quarter of the whole northern hemisphere is permafrost and the ground freezes throughout the year. It is widely distributed in the Arctic region of Siberia, Canada, Greenland and Alaska, and nearly 85% of the province is located above permafrost. It can be seen in high altitude areas such as Tibetan Plateau, Rocky Mountains, permafrost under the Arctic Ocean. In the Southern Hemisphere, frozen soil is much less, permafrost is found in the Andes Mountains of South America, the South Alps of New Zealand and the mountains beneath Antarctica.