Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget

摘要: Abstract The last deglaciation of the Scandinavian Ice Sheet (SIS) from ∼ 21 , 000 to 13,000 yr ago is well-constrained by several hundred 10Be and 14C ages. subsequent retreat history, however, established primarily minimum-limiting ages incomplete Baltic-Sea varve records, leaving a substantial fraction final SIS history poorly constrained. Here we develop high-resolution chronology for based on 79 cosmogenic exposure dates sampled along three transects spanning southern northern Sweden Finland. Combining this new with existing since Last Glacial Maximum shows that rates margin were strongly influenced deglacial millennial-scale climate variability its effect surface mass balance, regional modulation associated dynamical controls. Ice-volume estimates constrained our suggest contributed 8 m sea-level equivalent global rise between ∼14.5 ka 10 ka. Final was largely complete ∼10.5 ka, highest occurring during Bolling–Allerod, 50% decrease Younger Dryas, rapid increase early Holocene. volume estimated contributions other remaining Northern Hemisphere ice sheets suggests Antarctic (AIS) 14.4 ± 5.9 ∼13 This constraint supports those studies indicate an 15 or more lost AIS deglaciation.