Approximately 12.5 percent of an iceberg is above the waterline. An iceberg is a massive piece of ice that separates from a glacier or ice sheet. In order to be considered an iceberg, it must meet certain size criteria.Continue Reading
The iceberg has to be at least 16 feet above sea level, must encompass an area over 5,300 square feet and its thickness should be more than 98 feet and less than 165 feet. Icebergs are more prevalent during warm weather. The warmer temperatures cause the phenomena of calving, which is the separation from the glacier.
Another way to classify icebergs is by their shape, which can be either tabular or nontabular. A tabular iceberg has a flat top while a nontabular can have tops that may be domed, wedged or spire-like. Although icebergs can form near Antarctica and the Arctic regions, the more massive ones are found near Antarctica.Learn more about Earth Science