| Term: | Anchor ice |
| Definition: |
Submerged frazil ice attached or anchored to the river bottom, irrespective of its formation. NOAAHydrology
Submerged ice which is attached to the bottom. NSIDCCryosphere Sea ice terminology that describes submerged ice that is attached or anchored to the bottom of the sea, irrespective of the nature of its formation. ECCCanada Submerged ice attached or anchored to the bottom, irrespective of the nature of its formation. WMOSeaIce Submerged ice found attached to underwater objects such as the channel bed and aquatic vegetation. WMOHydrology Ice attached to the beds of streams, lakes, and shallow seas, irrespective of its nature of formation. On clear, cold nights in relatively still water, anchor ice may form directly on submerged objects. It also develops in supercooled water if turbulence is sufficient to maintain uniform temperature at all depths, in which case a spongy mass of frazil accumulates on objects exposed to rapid flow, and later deposition fills in the pores and creates solid ice. When the water temperature increases to above 0C, the ice rises to the surface, often carrying with it the object on which it had accumulated. Sometimes anchor ice is erroneously called ground ice, a term which should be reserved for bodies of more or less clear ice in frozen ground. AMSglossary Submerged ice which is attached to the bottom. SPRI GCW |