Abstract Ground water occurrence, movement, and its contribution to streamflow were investigated in Loch Vale, an alpine catchment the Front Range of Colorado Rocky Mountains. Hydrogeomorphologic mapping, seismic refraction measurements, porosity permeability estimates indicate that talus slopes are primary ground reservoir, with a maximum storage capacity is equal to, or greater than, total annual discharge from basin (5.4 ± 0.8 × 10 6 m 3 ). Although snowmelt glacial melt provide majority...

Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. are bodies consist a perennially frozen ice/rock mixture express distinct flow-like morphology indicating downslope creep movement. Annual rates motion have ranged from few millimeters to several meters per year, varying within annual cycle, year as well at decennial time scale. During last decade, in situ observations European Alps shown...

Abstract. The quantification of volumetric ice and water content in active rock glaciers is necessary to estimate their role as stores contributors runoff dry mountain catchments. In the semi-arid arid Andes Argentina, potentially constitute important reservoirs due widespread distribution. Here however, storage capacities interannual changes have so far escaped detailed field studies. Volumetric was quantified using a petrophysical four-phase model (4PM) based on complementary electrical...

Abstract. In the European Alps, almost half glacier volume has disappeared over past 150 years. The loss is reflected in retreat and ice surface lowering even at high altitude. steep glacial cirques, exposes rock to atmospheric conditions probably for very first time several millennia. Instability of rockwalls long been identified as one direct consequences deglaciation, but so far cirque-wide quantification rockfall resolution missing. Based on terrestrial lidar, a inventory...

Abstract The determination of sediment storage is a critical parameter in budget analyses. But, many studies the quantification magnitude and time‐scale still weakest part often relies on crude estimations only, especially large drainage basins (>100 km 2 ). We present new approach to meso‐scale alpine catchment Swiss Alps (Turtmann Valley, 110 depositional volumes was performed by combining geophysical surveys geographic information system (GIS) modelling techniques. Mean thickness...

Abstract Rock glaciers and transitional ice‐debris complexes predominate the Central Andean landform assemblage, yet regional studies on their state of activity kinematics remain sparse. Here we utilize national glacier inventory Argentina to quantify surface velocity fields 244 rock 51 complexes, located in Cordón del Plata range, Argentina. Applying a feature‐tracking approach repeated RapidEye satellite imagery acquired between 2010 2017/18, find mean displacement rates 0.37 2.61 m year...

ABSTRACT The possible influence of permafrost degradation on the formation debris flows in an area South Tyrolean Alps, Italy, was examined by comparing flow activity since 1983 with modelled contemporary distribution. study focused spatial congruence new initiation zones and potentially marginal permafrost, which should be especially sensitive to climatic change is presumed currently degrading. results show that distinct changes position areas mainly occurred at elevations above this zone....

Subsurface monitoring of permafrost conditions at depths up to 20–30 m is crucial assess the safety and reliability mountain infrastructure, because degradation critically affects rock slope stability in high mountains. Electrical resistivity tomography (ERT) provides a straightforward tool for near-surface bedrock monthly or longer intervals. But as rockfalls are often prepared over periods hours days, ERT early warning purposes should also detect short-term triggering events such...

AbstractOtto, J.‐C., Keuschnig, M., Götz, J., Marbach, M. and Schrott, L., 2012. Detection of mountain permafrost by combining high resolution surface subsurface information – an example from the Glatzbach catchment, Austrian Alps. Geografiska Annaler: Series A, Physical Geography, 94, 43–57. doi:10.1111/j.1468‐0459.2012.00455.xAbstractPermafrost distribution in mid‐latitude mountains is strongly controlled solar radiation, snow cover characteristics like debris cover. With decreasing...

Abstract About 10% of Europe's surface area is prone to rapid flooding rivers confined in valleys. The devastating potential such floods exacerbated by the deficits existing gauging networks, including low station densities and recording frequencies, lack information beyond stage height. Here, we use seismic data July 2021 Ahrtal flood, Germany, extract complement sparse hydrometric data, reconstruct evolution this fatal event. We show that a can deliver essential flood metrics as magnitude,...

The cryosphere in Central Asia is critically important as a source of water. Widespread glacier mass loss has been observed across the Tien Shan response to rising temperatures, raising concerns over future water resources. Northern Shan, situated along border Kazakhstan and Kyrgyzstan hosts almost 700 rock glaciers, including number notably large, fast flowing landforms, connected clean ice glaciers. Despite their prevalence, little known about volume distribution within these Previous...

Landslide failures pose a severe threat to society, especially when valley bottoms become blocked, ponding rivers and burying critical infrastructure. The erratic spatially distributed occurrence of those rapid mass wasting processes makes it eminent understand major drivers find reliable predictors that can help early warning.Here, we present results systematic study on progressively developing landslide near the town Müsch, in one narrowest sections Ahr Valley, Germany. slope...

Rock glaciers, debris-ice landforms creeping downslope, are characteristic periglacial in the Dry Andes of Argentina, typically located at lower elevation than glaciers. In this arid region, where monitoring is scarce or limited duration, rock glaciers characterised by high hydrological significance, density occurrence and comparatively large size. Recently recognized as essential climate variable, long-term monitored increases glacier velocity commonly associated with changes air...

The extreme Ahr flood 2021 caused 135 fatalities (and one still missing), severe damage and enormous geomorphological changes of the riverbanks, floodplains adjacent slopes. Many slopes were undercut several landslides have been reactivated. Müsch landslide is located in a narrow section upper valley. instability 100 m wide, 200 long, unknown age. Approximately 7000 m³ toe eroded by flood. After flood, was reactivated, resulting minor on surface (e.g. opening cracks). A...

Erosion by glacial and fluvial processes shapes mountain landscapes in a long-recognized characteristic way. Upland valleys incised typically have V-shaped cross-section with uniform moderately steep slopes, whereas tend to U-shaped profile changing slope gradient. We present novel regional approach automatically differentiate between based on the relation of multi-scale curvature drainage area. Sample catchments are delineated multiple moving window sizes used calculate per-cell over...

Abstract. Cirque erosion contributes significantly to mountain denudation and is a key element of glaciated topography. Despite long-standing efforts, rates rockwall retreat the proportional contributions low-, mid- high-magnitude rockfalls have remained poorly constrained. Here, unique, terrestrial-lidar-derived rockfall inventory (2011–2017) two cirques in Hohe Tauern range, Central Alps, Austria, analysed. The mean cirque wall rate 1.9 mm a−1 ranks top range reported values mainly driven...

We present a detailed geomorphological map (1:5000-scale) of middle mountainous area in Jena, Germany. To overcome limitations and to extend the possibility manually digital mapping structural way, we propose an approach using geographic information systems (GIS) high-resolution data. The features were extracted by interpreting analyzing combination different data sources light detection ranging (LiDAR) A topographic geological maps, orthophotos (DOPs), Google Earth images, field...