Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway

Glacier-permafrost interactions are investigated to understand glacial-hydrological influence along a partly glacierised valley on the NE flank of Snøhetta massif, Dovrefjell, southern Norway. Of particular interest is how processes controlled by hydrological connection between landforms. Field mapping identified an ice-marginal landsystem comprising polythermal glacier, proglacial lake, ice-cored moraine complex and river-lake with perennial frost mounds. A clear interaction glacial periglacial was observed in transitional landforms, most prominently which constitutes permafrost environment that directly reworked glaciofluvial processes. The role this controlling seasonal, partial drainage lake assessed using remote sensing-based observations surface size evolution seasonal subsidence. Results suggest two-fold threshold for drainage: Depending dynamics discharge active layer depth, may either act as barrier or pathway meltwater exiting glacier. This demonstrates importance landform glacial-periglacial landscape. To further assess subsurface hydrology linking domains, water stable oxygen isotope ratios across study area were studied map flow from glacier permafrost. include model catchment promote conceptual understanding thermal, hydraulic mechanical agent transient glacier-permafrost operating at heterogeneous timescales.