Beaufort Sea

The Beaufort Sea is in the Arctic.

It is near Alaska and Canada.

It is very cold there. Much of the sea is frozen. The ice melts a little in late summer.

A big river flows into the sea. It is the Mackenzie River. It is the longest river in Canada.

Many white whales live in the water. They are called beluga whales.

People can find oil deep under the sea. This is a very special place.

The Beaufort Sea is part of the Arctic Ocean.

It sits north of Alaska and Canada. The sea is named after Sir Francis Beaufort. He was a man who studied the ocean.

Most of the year, the sea is frozen. In late summer, the ice breaks near the coast. This creates a strip of open water. Because of climate change, this open area is getting larger.

Some of the ice is now thin and weak. Scientists call this rotten ice.

A very large river flows into the sea. This is the Mackenzie River. It is the longest river in Canada.

The land near the coast stays frozen deep down. This is called permafrost. People must build houses on wooden piles to stay above the ground.

Many animals live here. Beluga whales live in the water.

People also find oil and gas under the sea. There is a dispute over a wedge of water. Both Canada and the U.S. claim this area.

The Beaufort Sea is a large part of the Arctic Ocean.

It sits north of the Yukon and Northwest Territories in Canada. It also sits north of the state of Alaska in the United States.

To the east, you will find the Canadian Arctic Archipelago. The sea is named after a man named Sir Francis Beaufort. He was a hydrographer who studied the water.

This sea is a very important part of the Arctic world.

Most of the year, the Beaufort Sea is covered in thick ice.

In the months of August and September, the ice often breaks near the shore. This creates a strip of open water.

Because of climate change, this ice-free area has been getting much larger lately. Scientists have even found something called "rotten ice." This new ice is thinner and weaker than the old ice.

The water has different layers with different temperatures.

A very important river flows into the sea. This is the Mackenzie River, which is the longest river in Canada.

It empties into the Canadian side of the sea near a place called Tuktoyaktuk. The land near the coast is also very cold. The soil stays frozen deep down all year long. This is called permafrost. Because the ground is so frozen, people must build houses on wooden piles. These piles keep the buildings up above the ground.

Many interesting animals live in these cold waters.

The sea has one of the largest groups of beluga whales in the world. You might also find seals or polar bears nearby.

] ] People also look for resources under the sea floor. Between the 1950s and 1980s, people found petroleum and natural gas there. One such area is called the Amauligak field. Exploring for these resources is a major activity in the area today.

There is a special area of the sea that two countries argue about.

This is a wedge-shaped piece of water between Alaska and the Yukon. Canada says the border should follow a straight line called a meridian. The United States says the border should be a line of equidistance. This means the line would be the same distance from both coasts. Both nations agree the boundary should be fair. They are working together to protect the environment while they talk.

The Beaufort Sea is a marginal sea within the Arctic Ocean.

It is located north of the Yukon and the Northwest Territories in Canada. It also sits north of the state of Alaska in the United States. To the east, the sea is bordered by the Canadian Arctic Archipelago. The sea is named after Sir Francis Beaufort, who was a hydrographer.

This region is a vital part of the Arctic ecosystem and global climate systems.

The sea's physical environment is defined by extreme cold and complex water layers. The water is divided into four distinct layers. The top layer is surface water. Its temperature is 0°C in summer and -1.8°C in winter. The next layer comes from the Pacific Ocean and Bering Sea. This layer flows through the Bering Strait toward the North Pole. Below that is a warm, deep Atlantic layer. Its temperature ranges between 1°C and 2°C. The bottom layer is slightly colder at 0°C. Salinity, or the salt content, varies between 28‰ and 32‰ from south to north.

Sea ice plays a massive role in the Beaufort Sea's character. For a long time, the sea was a reservoir for Arctic sea ice. The Beaufort Gyre is the dominant ocean current in this area. This current causes sea ice to rotate for several years. This process creates thick, sturdy multi-year ice. However, climate change is altering this cycle. The ice-free area in late summer has grown much larger. In September 2012, the ice boundary retreated very far north. Scientists have also discovered "rotten ice." This new ice is thinner and weaker than ice found in the past.

The geography includes many landforms and river systems. The Mackenzie River is the longest river in Canada. It empties into the Canadian part of the sea west of Tuktoyaktuk.

The coastal shelf is narrow near Point Barrow in Alaska. It contains many submarine valleys. The shelf becomes wider near the Mackenzie River delta. The coastline is low, with maximum elevations between 10 and 30 meters. The soil contains permafrost, which is ground that stays frozen year-round. This permafrost exists at depths of 400 meters or less. Only the top few tens of centimeters thaw during the summer. Because of this, buildings are often placed on wooden piles to stay above the ground.

Human activity in the Beaufort Sea focuses on natural resources and fishing. Between the 1950s and 1980s, people discovered petroleum and natural gas under the shelf. The Amauligak field is one such example. Exploration for these resources is now a major human activity. There are also concerns regarding fisheries. The United States adopted a management plan in 2009 to prevent overfishing. In 2014, Canada announced it would not consider new commercial fisheries until research shows sustainable stocks. To protect habitats, Canada created Marine Protected Areas (MPAs). These include the Anguniaqvia niqiqyuam MPA and the Tarium Niryutait MPA.

Wildlife thrives in these waters despite the harsh conditions. The sea hosts one of the largest colonies of beluga whales. Other animals include seals and polar bears.

] ] Local populations practice traditional fishing and hunting of whales and seals. These activities are practiced locally but have no commercial significance. This helps maintain the balance of the local ecosystem.

A significant geopolitical issue involves a maritime boundary dispute. A wedge-shaped region is claimed by both the United States and Canada. This area sits between Alaska and the Yukon. Canada claims the boundary follows the 141st meridian west. This is based on the 1825 Treaty of Saint Petersburg. Canada uses the "natural prolongation" principle for this claim. The United States argues for the "equidistance" principle. This means the boundary should be a median line equidistant from both coasts. The dispute is important because the wedge may contain large natural reserves. Canada suggests the area could hold 11 billion barrels of oil and 200 trillion cubic feet of gas.

Despite the disagreement, both nations cooperate on environmental issues. They have initiated joint geological surveys to study the area. Both countries also agree that the boundary should be "equitable." They look to international standards to help resolve the matter. While the border remains unresolved, they work together to protect the maritime environment. This cooperation is essential for managing the changing Arctic landscape.