25.0 MB (1.3 MB compressed)
3451 x 2532 pixels
29.2 x 21.3 cm ⏐ 11.5 x 8.4 in (300dpi)
QA INTERNATIONAL / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY QA INTERNATIONAL / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
In cold regions, glaciers advance as far as the sea without melting. The force of waves and tides then fragments glacier tongues into gigantic blocks of floating ice called icebergs, only a small part of an iceberg is above water. Propelled by winds and ocean currents, icebergs travel thousands of kilometres, sometimes drifting as far as the tropics before melting in the ocean under the combined action of waves, salt, and the Sun's rays.
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