Preprints
https://doi.org/10.5194/essd-2021-367
https://doi.org/10.5194/essd-2021-367

  04 Nov 2021

04 Nov 2021

Review status: this preprint is currently under review for the journal ESSD.

Last interglacial (MIS 5e) sea level proxies in the glaciated Northern Hemisphere

April S. Dalton1, Evan J. Gowan2,3,4, Jan Mangerud5, Per Möller6, Juha P. Lunkka7, and Valery Astakhov8,9 April S. Dalton et al.
  • 1Department of Physical Geography and Geoecology, Charles University, Prague, Czech Republic
  • 2Department of Earth and Environmental Sciences, Kumamoto University, Kumamoto, Japan
  • 3Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany
  • 4MARUM, University of Bremen, Bremen, Germany
  • 5Department of Earth Science, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
  • 6Department of Geology, Quaternary Sciences, Lund University, Lund, Sweden
  • 7Geology Research Group, Oulu Mining School, University of Oulu, P.O. Box 9000, Oulu FI-90014 Finland
  • 8Institute of Earth Sciences, St. Petersburg University, Universitetskaya 7/9, 199034, St. Petersburg, Russia
  • 9A. P. Karpinsky Russian Geological Research Institute (VSEGEI), Sredny pr. 74, 199178, St. Petersburg, Russia

Abstract. Because global sea level during the last interglacial (LIG; 130–115 ka) was higher than today, the LIG is a useful analogue for improving predictions of future sea level rise. Here, we synthesize sea level proxies for the LIG in the glaciated Northern Hemisphere for inclusion in the World Atlas of Last Interglacial Shorelines (WALIS) database. We describe 82 sites from Russia, northern Europe, Greenland and North America from a variety of settings, including boreholes, riverbank exposures and along coastal cliffs. Marine sediments at these sites were constrained to the LIG using a variety of radiometric methods (radiocarbon, U-Series dating, K-Ar dating), non-radiometric methods (amino acid dating, luminescence methods, and electron spin resonance, tephrochronology) as well as various stratigraphic and palaeoenvironmental approaches. As the areas in this database were covered by ice sheets from the penultimate glaciation and were affected by glacial isostatic adjustment (GIA), most of the proxies show that sea level was much higher than present during the LIG. Many of the sites show evidence of regression due sea level fall due to GIA uplift, and some also show fluctuations that may reflect regrowth of continental ice or increased influence of the global sea level signal. The database is available at https://doi.org/10.5281/zenodo.5602212 (Dalton et al., 2021).

April S. Dalton et al.

Status: open (until 30 Dec 2021)

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April S. Dalton et al.

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Last interglacial (MIS 5e) sea level proxies in the glaciated Northern Hemisphere April S. Dalton; Evan J. Gowan; Jan Mangerud; Per Möller; Juha P. Lunkka; Valery Astakhov https://doi.org/10.5281/zenodo.5602212

April S. Dalton et al.

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Short summary
The Last Interglacial (LIG; 130,000 to 115,000 years ago) is a useful analogue for improving predictions of future changes to sea level because, at that time, global sea levels were 5 to 10 m higher compared to today. Here, we describe the location and characteristics of 82 LIG marine sites from Russia, northern Europe, Greenland and North America from a variety of settings, including boreholes, riverbank exposures and along coastal cliffs.