Origin and location of new Arctic islands and straits due to glacial recession

A total of 34 new islands (each 0.5 km^{2} or above) have appeared due to recession of Arctic glaciers under climate warming since the 1960s. Analysis of maps and satellite images of the Arctic coasts has been a basic method of recognizing these islands. Their origin is the final stage of a process...

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Bibliographic Details
Published in:Ambio
Main Authors: Ziaja, Wiesław, Ostafin, Krzysztof
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Online Access:https://ruj.uj.edu.pl/xmlui/handle/item/64719
https://doi.org/10.1007/s13280-018-1041-z
https://link.springer.com/article/10.1007/s13280-018-1041-z
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Summary:A total of 34 new islands (each 0.5 km^{2} or above) have appeared due to recession of Arctic glaciers under climate warming since the 1960s. Analysis of maps and satellite images of the Arctic coasts has been a basic method of recognizing these islands. Their origin is the final stage of a process which began in the twentieth century. They appear only on the coasts where bedrock elevations above sea level are surrounded by depressions below this level, filled (at least from the landside) with glaciers. Their recession leads to flooding of the depressions by sea water, thus creating straits which separate the new islands from the mainland. Hence, such new islands appear only in Greenland and the European Arctic. Their ecosystems accommodate to new environmental conditions. In the near future, this process will be intensified in a situation of further warming.