Amy Nevala, Chad Stevens, Tim Silva, Woods Hole Oceanographic Institution
Video length 10:39 minutes.Discuss this Resource»
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About Teaching Climate Literacy
Other materials addressing 5b
Other materials addressing 7a
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Teaching Tips | Science | Pedagogy |
- Best used in a unit on climate change and/or an oceanography lesson on the ocean conveyor belt, sea-level rise, and hydrology.
About the Science
- In this video, researchers travel to Greenland to investigate glacial lakes, which form atop the ice sheet each spring and summer as returning sunlight melts ice and snow. They have found that, as lakes grow large, cracks can open suddenly in the lake bottoms, allowing water to drain in a dramatic waterfall more than a half-mile down to the bedrock beneath the ice sheet. The water lubricates the base of the glacier like grease on a railroad track, allowing glaciers to flow faster. As global temperatures rise, more lakes and cracks may form, accelerating the flow of ice to the ocean. Researchers discuss the impact of the phenomenon on sea level rise and changes in the ocean conveyor belt.
- Passed initial science review - expert science review pending.
About the Pedagogy
- A linked Oceanus article, with related multimedia, provides more in-depth context. See "Getting to the Bottom of the Greenland Ice Sheet" link above video.
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