Rapid retreat of Arctic coastline revealed in images from the air

ScienceDaily | 6/7/2019 | Staff
Kezzerxx (Posted by) Level 3
Storms in the Canadian Arctic are washing away increasing amounts of coastal permafrost -- frozen ground -- which is exposed when sea ice melts during the summer.

The results highlight the ongoing change in the region, as a warming climate leads to longer summer seasons. Sea ice melts earlier and reforms later in the year than before, exposing the coastline and presenting more opportunities for storms to cause damage.

Team - Researchers - University - Edinburgh - Cameras

An international team of researchers led by the University of Edinburgh flew drone-mounted cameras over a section of permafrost coastline on Herschel Island, also known as Qikiqtaruk, off the Yukon coast in the Canadian Arctic.

The team mapped the area seven times over 40 days in the summer of 2017. Their results, from image-based computer models, showed that the coast had retreated by 14.5 metres during the period, sometimes more than a metre a day.

Comparison - Surveys - Rate - Erosion - Times

Comparison with surveys dating from 1952 until 2011 showed that the rate of erosion in 2017 was more than six times the long-term average for the area.

Around the Arctic,...
(Excerpt) Read more at: ScienceDaily
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