Where the Ice Shelf meets the Sea

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Halley Station is situated on the Brunt Ice Shelf, which is a thick platform of ice, floating on the surface of the Southern Ocean, and which is formed by the glacier (or ice sheet) flowing off the continent onto the ocean. This section of the Brunt Ice Shelf is about 30m high above the sea level, however it's total thickness, including the submerged part, can be in excess of 150m. In the picture, a head of the Ice Shelf is seen where it meets the Sea Ice. In contrast to the Ice Sheet or Ice Shelf, Sea Ice is a frozen sea water and is relatively thin, with the maximum thickness around 4-5m around this area in Winter.