The Alpine last glacial maximum in the boreal ice-sheets game

Giovanni Monegato, G. Scardia, I. Hajdas, F. Rizzini and A. Piccin recently published the results of their study in Scientific Reports.

This research reports on new chronological and stratigraphic results on the Garda end-moraine system. With this work, the size of the Last Glacial Maximum (LGM) piedmont lobe in the largest glaciated catchment of the southern side of the Alps was established. The reconstruction allowed to discuss the synchronicity of glacier advance in the Alps. Comparison with the waxing and waning of the major boreal ice sheets indicates that the Alpine LGM was in phase with the North American Ice Sheet (NAIS). As shown by recent circulation models, the topography of NAIS drove changes in atmospheric circulation and caused enhanced precipitation over the Alps, correspondingly reducing precipitation over northern Europe. The subsequent waning of the NAIS was likely the reason of the retreat of Alpine glaciers; at the same time the Scandinavian Ice Sheet reached its maximum volume.

Open access to the manuscript describing this study is available here. For further information, please contact Giovanni Monegato.

Full reference: Monegato G., Scardia G., Hajdas I., Rizzini F., Piccin A. 2017. The Alpine LGM in the boreal ice-sheets game. Scientific Reports, 7: 2078 | DOI:10.1038/s41598-017-02148-7.