Sea Ice Research and Ecosystems

Dr. Klaus Meiners discusses the Sea-ice Physics and Ecosystems Experiment, a 50-day voyage involving experts from 9 countries. The team studies the physics, chemistry, and biology of the Southern Ocean's sea ice zone. They use underwater robots, aircraft, and other tools to gather data, focusing on sea ice thickness and Krill. Despite a 1% increase in Antarctic sea ice over 3 decades, significant regional changes are noted, particularly in the West Antarctic Peninsula and East Antarctica. The main challenge is measuring ice thickness, as current satellite data only provides ice extent.

What is the primary goal of the Sea-ice Physics and Ecosystems Experiment?

• To establish a new research station

• To study the frozen part of the Southern Ocean

• To explore new shipping routes

• To conduct a fishing expedition

How many countries are collaborating in the Sea-ice Physics and Ecosystems Experiment?

• 12

• 17

• 5

• 9

What technology is used to observe the subsurface of the ice?

• Satellites

• Submarines

• Drones

• Underwater robots

What is the main focus of the instrumented aircraft used in the experiment?

• Measuring sea ice thickness

• Mapping ocean currents

• Monitoring weather patterns

• Tracking whale migrations

Why is krill considered important in the Antarctic ecosystem?

• They clean the ocean floor

• They are a primary food source for many marine animals

• They help in ice formation

• They are used for human consumption

What has been the trend in Antarctic sea ice over the last three decades?

• A decrease by 5%

• No significant change

• An increase by 1%

• A decrease by 10%

Which region has experienced a strong decline in sea ice extent and duration?

• North Pole

• South Georgia

• West Antarctic Peninsula

• East Antarctica

What is a major challenge in studying sea ice thickness?

• Inability to measure changes continuously

• Lack of interest

• Insufficient funding

• Lack of satellite data