For an initially cold iceberg, melting to liquid at temperature requires both latent heat of fusion and sensible warming determined by the ice specific heat capacity . Spatial mass density and temperature profiles determine their mass-weighted integrals. Additional warming of the meltwater requires a separate heat contribution.
An iceberg moving toward the equator carries a thermal deficit into warmer water. Melting extracts heat there, equivalent to transport of heat toward the pole. For an annual number of similar bergs, multiply their individual iceberg melt heat budget by the rate per second. Freshwater effects on density stratification and ocean circulation are separate from this heat accounting.
For a vertical-sided floating iceberg of height , Archimedes' principle equates displaced water mass to ice mass. Its draft is and its freeboard is the remaining height above water. A depth-dependent mass density must be integrated; using the densest layer throughout overestimates the draft.
The free-drift velocity of an iceberg follows from air and water drag, the Coriolis force, pressure gradients, currents and other external forces. Large submerged area and mass make its wind response weak compared with that of a thin floe.
For a constant wind force , still water, and linear water drag force , let . The Coriolis parameter gives equilibrium . The deviation evolves as , a damped inertial oscillation. Actual drag is commonly quadratic, so this is a linear illustrative model rather than a universal iceberg speed law.
Water drag on a large iceberg can exceed a tug force by many orders of magnitude; the relevant area is the immersed horizontal base when the quoted coefficient is an equivalent water-drag coefficient.
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"Iceberg" can refer to several different concepts depending on the context: 1. **Natural Phenomenon**: An iceberg is a large piece of freshwater ice that has broken off from a glacier or shelf ice and floats in open water. Icebergs are mostly submerged, with about 90% of their mass underwater, making them dangerous for ships. They are commonly found in polar regions, especially in the North Atlantic and Antarctic waters.