Abstract
We report evidence of four cycles of outburst floods from Catalina Lake, an ice-dammed lake in East Greenland, identified in satellite imagery between 1966–2016. The lake measures 20–25 km2, and lake level drops 130–150 m in each event, corresponding to a water volume of 2.6–3.4 Gt, and a release of potential energy of 1016 J, among the largest outburst floods reported in historical times. The drainage cycle has shortened systematically, and the lake filling rate has increased over each cycle, suggesting that the drainage pattern is changing due to climate warming with possible implications for environmental conditions in Scoresbysund fjord.
Highlights
Aslak Grinsted[1], Christine S
Hvidberg[1], Néstor Campos[2], Dorthe Dahl-Jensen1 1Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Denmark 2Research Group of High Mountain Physical Geography, Complutense University of Madrid, Spain We report evidence of four cycles of outburst floods from Catalina Lake, an ice-dammed lake in East Greenland, identified in satellite imagery between 1966-2016
The lake measures 20-25 km[2], and lake level drops 130-150 m in each event, corresponding to a water volume of 2.6-3.4 Gt, and a release of potential energy of 1016 J, among the largest outburst floods reported in historical times
Summary
Aslak Grinsted[1], Christine S.
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