Consider the following statements regarding the Southern Ocean -
- It is the fourth-largest ocean by surface area and is dominated by the Antarctic Circumpolar Current, the longest and strongest current on Earth.
- It was formed as a result of the drifting apart of Antarctica and South America, which created the Drake Passage.
- Its cold, nutrient-rich waters support low marine productivity compared to other oceans.
- It plays a key role in regulating Earth's climate by absorbing heat and carbon dioxide from the atmosphere and influencing global ocean circulation.
Which of the statements given above are correct?
Explanation - The Southern Ocean is also known as the Antarctic Ocean, is the fourth-largest ocean by surface area. The International Hydrographic Organisation describes the Southern Ocean as the World Ocean's southernmost portion. It is located on the lower end of the Pacific, Atlantic, and Indian Ocean and includes the tributary seas around the Antarctic region. It is known for its strong winds, intense storms, dramatic seasonal changes and cold temperatures. It is dominated by the Antarctic Circumpolar Current (ACC) which is the longest, strongest, deepest reaching current on earth. Formation — It was formed when Antarctica and South America drifted apart, creating the Drake Passage. Biodiversity — Powerful currents, cold temperatures and nutrient and oxygen-rich waters make the Southern Ocean one of the most productive marine ecosystems on Earth (not low productivity, so statement 3 is incorrect). Role of Southern Ocean — It plays an important role in the circulation of water around the globe. It also plays a key role in regulating the earth's climate through its currents, seasonal sea ice and by absorbing heat and carbon dioxide from the atmosphere.
Explanation - The Southern Ocean is also known as the Antarctic Ocean, is the fourth-largest ocean by surface area. The International Hydrographic Organisation describes the Southern Ocean as the World Ocean's southernmost portion. It is located on the lower end of the Pacific, Atlantic, and Indian Ocean and includes the tributary seas around the Antarctic region. It is known for its strong winds, intense storms, dramatic seasonal changes and cold temperatures. It is dominated by the Antarctic Circumpolar Current (ACC) which is the longest, strongest, deepest reaching current on earth. Formation — It was formed when Antarctica and South America drifted apart, creating the Drake Passage. Biodiversity — Powerful currents, cold temperatures and nutrient and oxygen-rich waters make the Southern Ocean one of the most productive marine ecosystems on Earth (not low productivity, so statement 3 is incorrect). Role of Southern Ocean — It plays an important role in the circulation of water around the globe. It also plays a key role in regulating the earth's climate through its currents, seasonal sea ice and by absorbing heat and carbon dioxide from the atmosphere.