Green iceberg enigma SOLVED: Scientists explain frozen Antarctic phenomenon

The study’s authors concluded in the report: “Previously, dissolved organic carbon had been proposed to be responsible for the green colour.

“Subsequent measurements of low DOC values in green icebergs, together with the recent finding of large concentrations of iron in marine ice from the Amery Ice Shelf, suggest that the colour of green icebergs is caused more by iron‐oxide minerals than by dissolved organic carbon.”

Icebergs that form from glacier ice that breaks off from the Antarctic ice sheet is partially made-up of frozen seawater collected at the glaciers’ bases.

This frozen sea water contains organic and inorganic particles that add hues of green to ice that normally comes in shades of blue or white.

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