The longest river in Antarctica is the Onyx. The river is located on Victoria Land, flowing out of Lake Brownworth and flowing into another lake, Lake Wanda. By Antarctic standards, the climate here is quite favorable, it can be warm in summer, which allows the Onyx to free itself from the ice shell for a while. It was in this area on January 5, 1974 was recorded one of the highest temperatures in Antarctica – plus 15 degrees Celsius.
How long is the Onyx river in Antarctica?
Onyx is 19 miles long. It is commonly believed that Antarctica is completely covered with snow and ice. This is not true. For example, the dry valleys of McMurdo, where the Onyx flows, are the largest area of Antarctica where there is almost no snow. The total area of these valleys is about 8,000 square kilometers. Snow simply does not stay here due to the fact that strong winds are constantly blowing over the valleys. There are no fish in the river, only algae and microorganisms. The water level in the Onyx is prone to very significant fluctuations depending on air temperature and the rate of glacial melt.
Which river flows 60 days a year?
It’s Onyx. And the Onyx flows for only two months of the year – the rest of the time it stands frozen to the bottom.
But sometimes the Onyx is quite “full-flowing”. For example, in 1984 New Zealand extreme tourists were able to raft down the river. The polar station Wanda, owned by New Zealand, worked on the shore of the Onyx. Lake Wanda, into which the Onyx flows, is hypersaline: the salt content of the water is much higher than even the Dead Sea. It is covered by a thick layer of ice throughout the year, only melting along the shores in the summer. Fish are not found here either. But the lake is famous for its “Royal Lake Wanda Swimmers Club”. Those who dare to dive into the thawing waters of the lake receive a corresponding sign. Even some famous politicians are members of the club.
In the dry valleys of McMurd is another Antarctica attraction, Bloody Falls, which flows out of Taylor Glacier. The water, which flows from a small ice fissure, is indeed the color of blood. This is because it contains large amounts of iron oxide. This unusual waterfall was found in 1911 by Australian geologist Griffith Taylor.
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