File:Mackenzie Delta Ice-Wedge Tuktoyaktuk Pingo.jpg
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Captions
Captions
Mackenzie delta with drained lake (foreground), ice-wedge polygons and a growing pingo.
Summary
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| Description |
Deutsch: Das seenreiche Gebiet des Mackenziedelta liegt in einer Zone mit mächtigem, kontinuierlichem Permafrost. Unter den tieferen Seen existieren jedoch ungefrorene Bereiche (Taliks) die allseitig von Permafrost umgeben sind. In Küstennähe können Seen durch Erosion entleert werden. Auf dem ehemaligen Seeboden bilden sich durch die jährlichen Gefrierzyklen Eiskeilpolygone. Zudem wächst hier ein Pingo (Bildmitte), da ein Talik allseitig zu gefrieren beginnt. Aufnahme: Lorenz King, JLU Giessen.de, 8. August 1987
English: The Mackenzie delta is an area with thick continuous permafrost. However, unfrozen areas (taliks) may exist below the lakes shown. In the foreground, a small lake has been drained due to erosion (close to the coast). Ice-wedge polygons along contraction cracks slowly develop by the yearly freezing and melting cycles. A slowly growing pingo develops. Photo: Lorenz King, JLU_Giessen.de, August 8,1987 |
| Date | |
| Source | Own work |
| Author | Matti&Keti |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:03, 18 July 2020 | | 3,063 × 2,070 (1.26 MB) | Matti&Keti (talk | contribs) | Uploaded own work with UploadWizard |
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