Circumpolar Current: Speed & Depth Through the Ages

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SUMMARY

The Antarctic Circumpolar Current (ACC) extends from the sea surface to depths of 2000-4000 meters and can reach widths of up to 2000 kilometers. Its speed has undergone significant changes since the Last Glacial Maximum (LGM), which occurred between 24,000 and 15,000 years ago, disrupting all ocean currents. The discussion highlights the importance of understanding these changes in current dynamics for climate studies and oceanography.

PREREQUISITES
  • Understanding of ocean current dynamics
  • Familiarity with glacial periods and their impact on climate
  • Knowledge of oceanographic measurement techniques
  • Basic concepts of marine geology
NEXT STEPS
  • Research the historical changes in ocean currents during the Last Glacial Maximum
  • Study the methods used to measure ocean current speed and depth
  • Explore the impact of the Antarctic Circumpolar Current on global climate systems
  • Investigate the role of ocean currents in marine ecosystems
USEFUL FOR

Oceanographers, climate scientists, and researchers studying marine geology and the effects of glacial periods on ocean dynamics will benefit from this discussion.

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How fast does the circumpolar current move and how much has its speed changed over the ages? Also, how deep is the current?
 
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You mean the Antarctic circumpolar current?

The ACC extends from the sea surface to depths of 2000-4000 m and can be as wide as 2000 km

We know that all ocean currents were severely disrupted during the "Last Glacial Maximum" (LGM) somewhere between 24,000 and 15,000 years ago, including the http://www.awi-bremerhaven.de/Publications/Mac2000a_abstract.html , however the explanation for that may be surprising.
 
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