Holocene Relative Sea Level Changes in Disko Bugt, West Greenland

An investigation of Holocene relative sea level (RSL) changes in Disko Bugt has been carried out with the purpose of reconstructing, with a good resolution in time and space, the Holocene RSL changes of a smaller part of Greenland, and thereby to allow testing of modern models for RSL changes in Greenland. This paper summarises the results of the investigation. The Holocene marine limit in Disko Bugt has been mapped, four RSL curves representing the Early - Middle Holocene emergence of different parts of Disko Bugt have been constructed, and attempts have been made to reconstruct the Late Holocene RSL changes within the region. Important conclusions are:  1. The rate of Early-Middle Holocene relative land rise increases towards the margin of the Greenland Ice Sheet. 2. RSL reached present sea level earlier in areas close to the Greenland Ice Sheet than in areas at greater distances from the Greenland Ice Sheet. 3. RSL fell below present sea level between 2 and 4 ka BP. 4. Submergence has occurred since ca. 1 ka BP.

[1]  M. Rasch,et al.  Geomorphology and Sedimentary Record of Three Cuspate Forelands as Indicators of Late Holocene Relative Sea-level Changes, Disko, West Greenland. , 1997 .

[2]  R. Fairbanks.  A 17,000-year glacio-eustatic sea level record: influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation , 1989, Nature.

[3]  D. Sutherland.  Dating and Associated Methodological Problems in the Study of Quaternary Sea-level Changes , 1987 .

[4]  M. Rasch,et al.  Holocene Relative Sea-Level Changes Indicated by Morphostratigraphic Sequences; Sinigfik, Disko Island, West Greenland , 1994 .

[5]  K. Lambeck.  CONSTRAINTS ON THE LATE WEICHSELIAN ICE SHEET OVER THE BARENTS SEA FROM OBSERVATIONS OF RAISED SHORELINES , 1995 .

[6]  A. Weidick.  Studies of Glacier Behaviour and Glacier Mass Balance in Greenland—A Review , 1984 .

[7]  Morten Rasch,et al.  Ancient Eskimo dwelling sites and Holocene relative sea‐level changes in southern Disko Bugt, central West Greenland , 1997 .

[8]  W. R. Peltier,et al.  Postglacial variations in the level of the sea: Implications for climate dynamics and solid‐Earth geophysics , 1998 .

[9]  H. Oerter,et al.  The recession of the inland ice margin during the Holocene climatic optimum in the Jakobshavn Isfjord area of West Greenland , 1990 .

[10]  J. Donner.  Holocene History of the West Coast of Disko, Central West Greenland , 1978 .

[11]  M. Rasch,et al.  Coastal morpho-stratigraphy and Holocene relative sea level changes at Tuapaat, southeastern Disko Island, central West Greenland , 1995 .

[12]  W. Peltier,et al.  Quaternary Geodynamics in Canada , 1989 .

[13]  M. Rasch.  A Compilation of Radiocarbon Dates from Disko Bugt, Central West Greenland. , 1997 .

[14]  C. Beaumont,et al.  A comparison of observed and theoretical postglacial relative sea level in Atlantic Canada , 1981 .

[15]  Philippe Huybrechts,et al.  The present evolution of the Greenland ice sheet: an assessment by modelling , 1994 .

[16]  O. Humlum.  Glacier behaviour and the influence of upper-air conditions during the Little Ice Age in Disko, central West Greenland. , 1987 .

[17]  W. Peltier.  Mechanisms of Relative Sea-level Change and the Geophysical Responses to Ice-water Loading , 1987 .