Drift ice
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High Quality Content by WIKIPEDIA articles! Drift ice is ice that floats on the surface of the water in cold regions, as opposed to fast ice, which is attached ("fastened") to a shore. Usually drift ice is carried along by winds and sea currents, hence its name, "drift ice".When the drift ice is driven together into a large single mass, it is called pack ice. Wind and currents can pile up ice to form ridges three to four metres high, creating obstacles difficult for powerful icebreakers to penetrate. Typically areas of pack ice are identified by high percentage of surface coverage by ice:…mehr

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High Quality Content by WIKIPEDIA articles! Drift ice is ice that floats on the surface of the water in cold regions, as opposed to fast ice, which is attached ("fastened") to a shore. Usually drift ice is carried along by winds and sea currents, hence its name, "drift ice".When the drift ice is driven together into a large single mass, it is called pack ice. Wind and currents can pile up ice to form ridges three to four metres high, creating obstacles difficult for powerful icebreakers to penetrate. Typically areas of pack ice are identified by high percentage of surface coverage by ice: e.g., 80-100%. Ice floes Pack ice. An ice floe is a large piece of drift ice that might range from tens of metres (yards) to several kilometres in diameter. Wider chunks of ice are called ice fields. The two major ice packs are the Arctic ice pack and the Antarctic ice pack. In many areas such as the Baltic, drift ice is traditionally a seasonal event, appearing in winter and vanishing in warmerseasons. Seasonal ice drift in the Sea of Okhotsk by the northern coast of Hokkaid , Japan has become a tourist attraction of this area with harsh climate.