Any type of sea, river, or lake ice attached to the shore, beached, stranded in shallow water, or frozen to the bottom of shallow waters.
sea ice attached to the shore, generally in the position where it first formed.
Sea ice which forms and remains fast along the coast, where it is attached to the shore, between shoals or grounded icebergs.
sea ice that is attached or fastened to the shoreline or seafloor.
sea or lake ice that remains tied to the coast (usually 2 m above sea level)
sea ice that forms at the shore and remains fast
Sea ice that has frozen along coasts and extends out from land.
sea ice that remains attached (fast) to the coast. May be formed in situ from seawater or by the freezing of pack ice to the shore. Fast ice typically reaches its maximum development at the end of March or beginning of April.
(Also called landfast ice.) Sea ice that is immobile due to its attachment to a coast, usually extending offshore to about the 20-m isobath. In protected bays and inlets, fast ice is smooth and level, typically reaching a thickness of between 2 and 2.5 m. Along exposed coastlines, fast ice may be greatly deformed.
Fast ice is ice that is attached to the shore, usually found in polar seas.
ice that is anchored to the shore or ocean bottom, typically over shallow ocean shelves at continental margins; fast ice is defined by the fact that it does not move with the winds or currents. Note: This is land fast ice. (Photo courtesy of Michael Van Woert, National Oceanic and Atmospheric Administration/Department of Commerce.)