TY JOUR TI "Back-arc" marine ice sheet in the Sea of Okhotsk KW marine ice sheet KW Sea of Okhotsk KW Last Glacial Maximum KW Kuril Islands KW last deglaciation KW climate change KW Ice sheet buttressing KW Iceberg armadas. JO Russian Journal of Earth Sciences AU Grosswald, M.G. AU Hughes, T.J. PY 2005 IS 7 PB Geophysical Center of the Russian Academy of Sciences