A Holocene relative sea-level database for the Baltic Sea

Rosentau, Alar; Klemann, V.; Bennik, Ole; Steffen, Holger; Wehr, Jasmin; Latinovic, Milena; Bagge, Meike; Ojala, Antti; Berglund, Mikael; Becher, Gustaf Peterson; Schoning, Kristian; Hansson, Anton; Nielsen, Lars; Clemmensen, Lars B.; Hede, Mikkel U.; Kroon, Aart; Pejrup, Morten; Sander, Lasse; Stattegger, Karl; Schwarzer, Klaus; Lampe, Reinhard; Lampe, Matthias; Uścinowicz, Szymon; Bitinas, Albertas; Grudzinska, Ieva; Vassiljev, Jüri; Nirgi, Triine; Kublitskiy, Yuriy; Subetto, Dmitry

doi:10.1016/j.quascirev.2021.107071

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A Holocene relative sea-level database for the Baltic Sea

Authors

Rosentau, Alar
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Klemann, V.
1.3 Earth System Modelling, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bennik, Ole
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Steffen, Holger
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Wehr, Jasmin
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Latinovic, Milena
4.4 Hydrology, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Bagge, Meike
1.3 Earth System Modelling, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Ojala, Antti
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Berglund, Mikael
External Organizations;

Becher, Gustaf Peterson
External Organizations;

Schoning, Kristian
External Organizations;

Hansson, Anton
External Organizations;

Nielsen, Lars
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Clemmensen, Lars B.
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Hede, Mikkel U.
External Organizations;

Kroon, Aart
External Organizations;

Pejrup, Morten
External Organizations;

Sander, Lasse
External Organizations;

Stattegger, Karl
External Organizations;

Schwarzer, Klaus
External Organizations;

Lampe, Reinhard
External Organizations;

Lampe, Matthias
External Organizations;

Uścinowicz, Szymon
External Organizations;

Bitinas, Albertas
External Organizations;

Grudzinska, Ieva
External Organizations;

Vassiljev, Jüri
External Organizations;

Nirgi, Triine
External Organizations;

Kublitskiy, Yuriy
External Organizations;

Subetto, Dmitry
External Organizations;

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Citation

Rosentau, A., Klemann, V., Bennik, O., Steffen, H., Wehr, J., Latinovic, M., Bagge, M., Ojala, A., Berglund, M., Becher, G. P., Schoning, K., Hansson, A., Nielsen, L., Clemmensen, L. B., Hede, M. U., Kroon, A., Pejrup, M., Sander, L., Stattegger, K., Schwarzer, K., Lampe, R., Lampe, M., Uścinowicz, S., Bitinas, A., Grudzinska, I., Vassiljev, J., Nirgi, T., Kublitskiy, Y., Subetto, D. (2021): A Holocene relative sea-level database for the Baltic Sea. - Quaternary Science Reviews, 266, 107071.
https://doi.org/10.1016/j.quascirev.2021.107071

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007315

Abstract

We present a compilation and analysis of 1099 Holocene relative shore-level (RSL) indicators located around the Baltic Sea including 867 relative sea-level data points and 232 data points from the Ancylus Lake and the following transitional phase. The spatial distribution covers the Baltic Sea and near-coastal areas fairly well, but some gaps remain mainly in Sweden. RSL data follow the standardized HOLSEA format and, thus, are ready for spatially comprehensive applications in, e.g., glacial isostatic adjustment (GIA) modelling. We apply a SQL database system to store the nationally provided data sets in their individual form and to map the different input into the HOLSEA format as the information content of the individual data sets from the Baltic Sea area differs. About 80% of the RSL data is related to the last marine stage in Baltic Sea history after 8.5 ka BP (thousand years before present). These samples are grouped according to their dominant RSL tendencies into three clusters: regions with negative, positive and complex (transitional) RSL tendencies. Overall, regions with isostatic uplift driven negative tendencies dominate and show regression in the Baltic Sea basin during the last marine stage. Shifts from positive to negative tendencies in RSL data from transitional regions show a mid-Holocene highstand around 7.5–6.5 ka BP which is consistent with the end of the final melting of the Laurentide Ice Sheet. Comparisons of RSL data with GIA predictions including global ICE-5G and ICE-6G_C ice histories show good fit with RSL data from the regions with negative tendencies, whereas in the transitional areas in the eastern Baltic, predictions for the mid-Holocene clearly overestimate the RSL and fail to recover the mid-Holocene RSL highstand derived from the proxy reconstructions. These results motivate improvements of ice-sheet and Earth-structure models and show the potential and benefits of the new compilation for future studies.