The Amundsen sea: Geology, climate, fauna

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2018-03-27 05:56:10

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The North Pacific ocean on the one hand surround the glaciers, and on the other – West coast of Antarctica. The entire surface of pond covered with ancient ice.

Next to him cut into the permafrost, pointed toe Dart. To the East is the Isle of Thurston. Landmark – Land Marie Byrd. As you can see, we should not delude ourselves by posing one question, where is the Amundsen sea in the Pacific ocean? The Hawaiian Islands are in completely different parts of it, like all popular tourist destinations of beach and sightseeing holiday.

Amundsen sea

Geological features

The Pool is bordered by other Northern parts of the ocean, such as the Bellingshausen sea and Ross. Its area is greater than 98 000 km², the average depth is just over 250 meters. The terrain reminds of the shell, which has a small bias in the direction of the mainland coast. On the outskirts of the land towering piles of glaciers.

The Outer extremity of the shelf of the Amundsen sea in the Pacific ocean lies at a depth of five hundred meters. The descent into the water is steep, but the landscape is smooth, without cracks and steps. Its length is about four kilometers.

Amundsen sea Pacific ocean

The Increased salinity of the waters is changed regularly. The maximum concentration of sodium chloride is reached in winter and is 33 ppm. In July, when the melting of glaciers in full swing, fresh water reduces the concentration of NaCl.

Research and discovery

The name of the reservoir was given by the famous scientist and discoverer Roald Amundsen. Norwegian for a long period of time studied Nordic and polar regions of Antarctica. And it is here, at the edge of the mortuary Heath, ended his last journey.

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Attempt to get close to the shore was made, and James cook, who visited these places in the second half of the XVIII century. Closest to swim to the mainland, managed the North American ice-breaker "Palmer" in the framework of the Antarctic expedition in 1993.

To this day, information about the Amundsen sea are scarce and contradictory. Despite the development of technology, to reach the opposite Bank still no one came. Its pool is the most severe and unapproachable.

The coastline is a cluster of huge ice blocks. They are replaced by bottomless cliffs. The waters of the Amundsen sea serves as a natural shield of Antarctic land. He is directly involved in the formation of the movement of icebergs. Annually the region produces 250 cubic kilometers of ice.

Amundsen sea Pacific ocean where the Hawaiian Islands

Weather conditions

The Pond is in the realm of the Antarctic climate. The air space and form masses coming from the mainland. His area has an intense message with the currents of the ocean. The minimum temperature is observed during the summer months. The Studen are July and August. In the southern part of the region at this time of year the temperature is at -18 °C. In the North fall below -28 °C.

On the shore even colder. Testimony -50 °C are not uncommon. Warming bring into these latitudes of the Nordic wind. A thaw occurs in winter season, which lasts from December to February. At this time, the temperature is in the range -8… -16 °C. Oceanic flows are able to heat water up to 1.5 °C.

These months is the navigation season. The surface of the Amundsen sea is covered with drifting icebergs, between which are formed openings. Only three of them:

  • One in the Gulf of Russell;
  • Two in the area of Thwaites glacier.

The Maximum area available for vessels to move, is 55,000 square kilometers. The water in it warms up to 0 °C. But cools down quickly. This is due to the fact that the drifting ice floes cover the opened area of the melt water.

The inhabitants of the North

Frosty ice, cliffs, protruding above the frozen abyss, seem lifeless. But it's not. In the waters of the Amundsen sea are found fish of the nototheniid family. Live in the North, penguins and albatrosses. Spotted seals, which bask in the rays of cold sun on the ice floes.

Are Found in these places, sea leopards, whales, seals, orcas and dolphins that feed on flesh. The most close to the waterfront suitable eight-meter whale.

Environmental issues

Over the last few decades, scientists are sounding the alarm, stating the extreme melting of the Antarctic ice. According to information received from space satellites, ground line marking the border between water and land parts of the reservoir, regularly shrinking. So today looks at a photo of the Amundsen sea.

Amundsen sea photo

Only in ten years it retreated thirty kilometers inside Antarctica. If you compare the rate of reduction of this zone, with indications of 1973, it increased by almost 80 %. Has changed for the worse and the scheme of movement of ice masses. Current measurements show that during the twelve months Nordic latitudes lose up to 160 billion tons of frozen liquid. This is a third more than in 2011.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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