Bellingshausen Sea

The Bellingshausen Sea is in Antarctica. It sits near many islands. It is next to the Amundsen Sea. A Russian man gave the sea its name. Long ago, a space rock hit the sea. This made a deep hole called a crater. The water in the sea is getting warmer. This warm water makes the ice melt. The melted ice flows into the sea. This can change the water around the land. It is a very big and busy place.

The Bellingshausen Sea is in Antarctica. It sits by the Antarctic Peninsula. Many islands are near this sea. Alexander Island is to the east. Peter I Island is to the south. This sea joins the Amundsen Sea to the west. A Russian officer named Fabian von Bellingshausen gave it its name. He explored the area in 1821.

The sea floor has a flat part called the Bellingshausen Plain. There are also two deep paths called troughs. These are the Belgica Trough and the Latady Trough. One part of the sea has a huge hole. It is called the Eltanin crater. A large space rock hit the sea long ago. This happened about 2.15 million years ago.

The water in this sea is changing. Warm water flows into the troughs. This makes the temperature rise by 3 degrees Celsius. This warmth melts the ice shelves. Meltwater flows from the ice into the sea. This can change how water moves around Antarctica. This process can even change how heat moves in the ocean.

The Bellingshausen Sea is a large part of the Southern Ocean. It sits along the west side of the Antarctic Peninsula. You can find it between 57°18'W and 102°20'W. Many landforms are close to these waters. Alexander Island sits to the east of the sea. To the south lies Peter I Island. The sea also borders the Eights Coast and the Bryan Coast. It meets the Amundsen Sea at the west side of Cape Flying Fish.

Deep under the waves, the sea has a unique shape. It contains a flat area called the Bellingshausen Plain. There are also two deep paths known as troughs. The Belgica Trough is on the west side. The Latady Trough is on the east side. These troughs help move water through the sea. They also allow warm water to reach deep places.

This sea has a long history of discovery. A Russian navy officer named Fabian Gottlieb von Bellingshausen explored it. He was also a map maker, known as a cartographer. He visited these cold waters in 1821. The sea carries his name to this day. It is a place that scientists are still learning about.

Something amazing happened here a very long time ago. An asteroid named Eltanin hit the edge of the sea. This space rock was about 1 to 4 km wide. The impact happened during the early Pleistocene Epoch. This was around 2.15 million years ago. It created the Eltanin crater. This is the only known impact in a deep-ocean basin in the world.

Today, the water in the sea is changing. Warm water from the Circumpolar Deep Waters flows into the troughs. This has raised the temperature by 3° Celsius. This warmth can melt the ice shelves nearby. Meltwater from the Venable Ice Shelf flows through the Belgica Trough. The Abbot Ice Shelf sends meltwater through the Seal Trough. This melting can change how heat moves around the whole continent.

The Bellingshausen Sea is a marginal sea located in Antarctica. It sits along the west side of the Antarctic Peninsula. The sea is located between 57°18'W and 102°20'W. It is bordered by several coastal areas. These include the Eights Coast, the Bryan Coast, and the western part of the English Coast. Alexander Island lies to its east. Peter I Island is located to the south. To the west of Cape Flying Fish, the Bellingshausen Sea joins the Amundsen Sea.

The sea contains several distinct geological and oceanographic features. Under the water, there is a flat area called the Bellingshausen Plain. The sea also features two major troughs, which are long, deep depressions in the ocean floor. The Belgica Trough is located on the western side. The Latady Trough is located on the eastern side. These troughs play a major role in how water moves through the region.

Oceanography in this region is complex and still being studied. Scientists have recently discovered new information about its circulation. One important feature is the Antarctic Slope Current, or ASC. This current is thought to originate in the Bellingshausen Sea. It is not driven by the wind. Instead, it results from a density front at the shelf break. This current helps transport heat from this sea to the Amundsen Sea.

Meltwater also moves through the sea in two distinct flows. These flows come from the ice shelves. The first flow comes from the Venable Ice Shelf. This meltwater travels through the Belgica Trough. The second flow comes from the Abbot Ice Shelf. This water travels through the Seal Trough, which is west of the Belgica Trough. This second flow has a different vertical structure. It occupies greater depths with denser isopycnals, which are layers of water with equal density.

Over the last twenty years, the sea has experienced significant changes. Warm water from the Circumpolar Deep Waters has flowed into the region. This water enters through the Belgica and Latady Troughs. Once inside, the warm water can reach cavities in the ice shelves. This has caused the temperature to increase by 3° Celsius. This warming has pushed temperatures above the freezing point. As a result, many of the ice shelves surrounding the sea are melting.

This melting process has a large impact on the entire Antarctic continent. Currents like the Antarctic Coastal Current carry meltwater into the Amundsen Sea. In the western troughs, currents carry both meltwater and warmed Circumpolar Deep Water to shelf breaks. This has established a shelf break frontal system. If the injected meltwater is buoyant enough, it can rise to the surface. Once it reaches the surface, it can circle the continent. This can change the ocean's stratification and alter geostrophic circulation. It also affects vertical mixing and the movement of heat.

The history of the sea is tied to exploration and ancient events. The sea is named after Fabian Gottlieb von Bellingshausen. He was a Russian navy officer and a cartographer. He explored these waters in 1821. The sea also holds a unique geological secret. It contains the Eltanin crater. This crater was formed by an impact from the Eltanin asteroid. The asteroid was about 1 to 4 km in diameter. This impact happened during the early Pleistocene Epoch, roughly 2.15 million years ago. It is the only known impact in a deep-ocean basin in the world.