Movie:Arctic Coastal Erosion- Melting Block 2010: Difference between revisions
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{{Attribute movie1 | {{Attribute movie1 | ||
|Movie domain = terrestrial, hydrology, coastal, marine | |Movie domain=terrestrial, hydrology, coastal, marine | ||
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{{Attribute movie2 | {{Attribute movie2 | ||
|Movie keywords = Arctic Alaska, Permafrost Melt, Waves, Thermal erosion, Sea Ice free season | |Movie keywords=Arctic Alaska, Permafrost Melt, Waves, Thermal erosion, Sea Ice free season | ||
}} | }} | ||
{{Attribute movie3 | {{Attribute movie3 | ||
|First name contributor=Irina | |First name contributor=Irina | ||
|Last name contributor =Overeem | |Last name contributor=Overeem | ||
and EIS-Extreme Ice Survey | and EIS-Extreme Ice Survey | ||
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{{Movie description | {{Movie description | ||
|Grade level=Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional | |Grade level=Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional | ||
|One-line movie description = Melting of a toppled block of permafrost coast | |One-line movie description=Melting of a toppled block of permafrost coast | ||
|Extended movie description=Long stretches of permafrost coast in the Arctic region consist of ice-rich sediments. These permafrost areas have been experiencing rapid warming over the last decades. The warming melts the permafrost, but it also exposes the coast longer to the forces of the ocean because the sea-ice free season has expanded. | |Extended movie description=Long stretches of permafrost coast in the Arctic region consist of ice-rich sediments. These permafrost areas have been experiencing rapid warming over the last decades. The warming melts the permafrost, but it also exposes the coast longer to the forces of the ocean because the sea-ice free season has expanded. | ||
Latest revision as of 16:16, 21 June 2017
Information Page: Arctic Coastal Erosion- Melting Block 2010
Play Movie
Arctic Coastal Erosion_Melting Block
Key Attributes
| Domain: | terrestrial, hydrology, coastal, marine |
| Keywords: | Arctic Alaska, Permafrost Melt, Waves, Thermal erosion, Sea Ice free season |
| Model name: | Animation model name |
| Name: | Irina, Overeem
and EIS-Extreme Ice Survey |
| Where: | Drew Point, Alaska, Beaufort Sea Coast, USA |
| When: | August 13th-22nd, 2010 |
Short Description
Grade level: Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional
Statement: Melting of a toppled block of permafrost coast
Abstract: Long stretches of permafrost coast in the Arctic region consist of ice-rich sediments. These permafrost areas have been experiencing rapid warming over the last decades. The warming melts the permafrost, but it also exposes the coast longer to the forces of the ocean because the sea-ice free season has expanded.
This particular movie shows the permafrost coast near DrewPoint, along the Alaskan Beaufort Sea. At Drew Point, there are nowadays about twice as many days of open water than in the late 1970's. This results in more absorption of heat in the ocean water. The bluff is approximately 4.5 m high, and the block in the movies is about 13 m long. The block is not necessarily eroded by waves, but also just by melt ( this is called - thermal erosion). The warm sea water needs to touch the block and then rapid melt will occur. The massive block disappears in about a week.
Theory
Links
http://www.earthmagazine.org/article/scientists-go-extremes-monitor-arctic-permafrost-loss
References
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