Simulated retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry
Nadine Steiger et al.
Flowline model output for Jakobshavn Isbræ from 1850-2014 with different changes in forcing parametersN. Steiger, K. Nisancioglu, H. Åkesson, B. de Fleurian, and F. Nick https://doi.org/10.11582/2018.00018
We use an ice flow model to reconstruct the retreat of Jakobshavn Isbræ since 1850, forced by increased ocean warming and calving. Fjord geometry governs locations of rapid retreat: narrow and shallow areas act as intermittent pinning points for decades, followed by delayed rapid retreat without additional climate warming. These areas may be used to locate potential moraine buildup. Evidently, historic retreat and geometric influences have to be analyzed individually for each glacier system.
We use an ice flow model to reconstruct the retreat of Jakobshavn Isbræ since 1850, forced by...