The Significance of Thwaites Glacier in West Antarctica and its Impact on Global Sea-Level Rise
Thwaites Glacier, often referred to as the 'Doomsday Glacier,' is a massive ice formation in West Antarctica roughly the size of a large country. It is critical for scientists monitoring global sea-level rise because it sits on land that slopes downward below sea level. This topography allows warm ocean water to flow underneath the glacier's ice shelf, melting it from below. As the ice shelf thins or breaks, the glacier's flow into the ocean accelerates. If Thwaites were to collapse entirely, it could raise global sea levels by approximately half a meter and destabilize the surrounding West Antarctic Ice Sheet.
Key Points
- Thwaites Glacier is nicknamed the 'Doomsday Glacier' due to its potential impact on global sea levels.
- The glacier is melting from below because warm ocean water flows under its floating ice shelf.
- The ice shelf acts as a 'doorstop' that slows the glacier's flow; its thinning accelerates ice loss.
- A complete collapse of the glacier could lead to a 0.5-meter rise in global sea levels.
Exam Facts
- Thwaites Glacier is located in West Antarctica.
- Scientists estimate a potential sea-level rise of half a meter (0.5m) if the glacier collapses.
Read it. Retain it. Recall it.
Get spaced-repetition flashcards, daily quizzes and offline access — free on Android.