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. The glacial landscape of the Alps has fascinated generations of explorers,artists, mountaineers, and scientists with its diversity, including erosional features of all scales from high-mountain cirques to steepglacial valleys and large overdeepened basins. Using previous glaciermodelling results and empirical inferences of bedrock erosion under modernglaciers, we compute a distribution of potential glacier erosion in theAlps over the last glacial cycle from 120 000 years ago to the present.Despite large uncertainties pertaining to the climate history of the Alpsand unconstrained glacier erosion processes, the resulting modelledpatterns of glacier erosion include persistent features. The cumulativeimprint of the last glacial cycle shows a very strong localization oferosion potential with local maxima at the mouths of major Alpine valleysand some other upstream sections where glaciers are modelled to have flowedwith the highest velocity. The potential erosion rates vary significantlythrough the glacial cycle but show paradoxically little relation to thetotal glacier volume. Phases of glacier advance and maximum extension see alocalization of rapid potential erosion rates at low elevation, whileglacier erosion at higher elevation is modelled to date from phases of lessextensive glaciation. The modelled erosion rates peak during deglaciationphases, when frontal retreat results in steeper glacier surface slopes,implying that climatic conditions that result in rapid glacier erosionmight be quite transient and specific. Our results depict the Alpine glacier erosion landscape as a time-transgressive patchwork, with different parts of the range corresponding to different glaciation stages and time periods.

Last-glacial-cycle glacier erosion potential in the Alps