therefore likely that only a very small proportion of bergs calved from the ice shelf are grounded near shore.

Other tabular bergs in western Ross Sea have uneven upper surfaces and many of these are composed of stratified firn and ice without snow. Most of these bergs calved from glacier tongues, piedmont and other marine glaciers along the Victoria Land coast (Keys, 1985).

Iceberg populations are therefore complex. They are composed of bergs derived from sources both near and far and vary in concentration depending on sources, production rates, drift patterns, grounding and decay.

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