Map showing the age distribution of Arctic sea ice in spring 2019. The ice is shaded according to its age, which ranges from over four years (white) to less than a year (dark grey). Ice that is present for more than a year is known as multi-year ice or perennial ice. It starts off around 2 metres thick, but can reach a thickness of over nine metres. Perennial ice is more resistant to melting than young ice. The decline in perennial ice in the Arctic is an indication of climate change. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Mark Tschudi, Walter Meier, J Stewart / NASA Scientific Visualisation Studio, NSIDC |
Bildgröße: | 5573 px × 3135 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |