Sarah Kamleitner- PhD
- PostDoc Position at University of Lausanne
Sarah Kamleitner
- PhD
- PostDoc Position at University of Lausanne
About
16
Publications
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Introduction
Current institution
Publications
Publications (16)
The Upper Kaunertal, as many other valleys situated in the Eastern Alps, has recently undergone large deglaciation processes as a result of global warming, leaving behind large moraines exposed to geomorphic processes. Steep lateral moraines represent large and easily erodible sources of material within an Alpine sediment cascade. In order to quant...
The Gepatschferner glacier in the Upper Kaunertal valley in western Austria is recently one of the fastest melting glaciers in the region of the Eastern Alps. With a retreat rate of around 100m/year in the last years unconsolidated sediments of steep lateral moraines have been exposed to erosion. The earth surface changes in the proglacial area are...
High resolution LiDAR time series are useful tools allowing the quantification of relief changes in proglacial areas and the establishment of sediment budgets in morphological highly active Alpine catchments. Estimated sediment volume loss is often exclusively associated with different processes of mass movement, slope wash, and fluvial erosion, wh...
High resolution LiDAR time series are useful tools allowing the quantification of relief changes in proglacial areas and the establishment of sediment budgets in morphological highly active Alpine catchments. Estimated sediment volume loss is often exclusively associated with different processes of mass movement, slope wash, and fluvial erosion, wh...
25 thousand years ago, the European Alps were covered by the kilometre-thick Alpine Ice Field. Numerical modelling of this glaciation has been challenged by model-data disagreements, including overestimations of ice thickness. We tackle this issue by applying the Instructed Glacier Model, a three-dimensional model enhanced with physics-informed mac...
25 thousand years ago, the European Alps were covered by a kilometre-thick body of ice, commonly described as the Alpine Ice Field. Numerical modelling of this glaciation has been challenged by persistent model-data disagreements, including large overestimations of its former thickness. Here, we tackle this issue by applying the Instructed Glacier...
Presentation of the new capabilities of the instructed glacier model, now a 3D thermo-mechanically coupled model enhanced with physics-based machine learning. This model now enables us to replicate palaeo-simulations of the entire Alpine Ice Field such as those previously conducted with PISM (e.g. Jouvet et al., 2023), but at significantly higher s...
We present new chronological data and Equilibrium Line Altitude (ELA) information for palaeoglaciers in the Maritime Alps during the Last Glacial Maximum (LGM) and the early deglaciation. Three relatively small catchments were investigated to test if the response of small (1-10 km2) glaciers to LGM climatic forcing was distinguishable from that of...
Based on high‐resolution (sub)glacial geomorphological mapping, we present a first digital inventory of streamlined bedforms within the footprint of a Last Glacial Maximum (LGM) Alpine piedmont glacier. A total of 2460 drumlins were mapped across the Rhine glacier foreland. Glacial lineations and one field of subglacial ribs (ribbed/Rogen moraines)...
Our limited knowledge of the climate prevailing over Europe during former glaciations is the main obstacle to reconstruct the past evolution of the ice coverage over the Alps by numerical modelling. To address this challenge, we perform a two-step modelling approach: First, a regional climate model is used to downscale the time slice simulations of...
The provenance and distribution of erratic boulders of the Ticino-Toce glacier network yields key information for determining glaciers' paleoflow and highlights the interaction between two major Alpine glacier systems during the Last Glacial Maximum (LGM). Boulders in the central and western parts of the Verbano, as well as in the smaller Orta end...
Fresh glacial landforms of the Alpine forelands evidence the presence and extent of large piedmont glaciers during the Last Glacial Maximum (LGM) and yield valuable insights into LGM glacier dynamics. This study assesses widespread ice marginal landforms preserved within the limit of the former LGM Rhine glacier and the eastern lobes of the LGM Reu...
We present a new glacier chronology from one of the major end moraine systems of the Southern Alps. Timing and extent of the Last Glacial Maximum (LGM) advance of the Ticino-Toce glacier were reconstructed in detail based on landform relationships and surface exposure dating. ¹⁰Be and ³⁶Cl ages from 41 erratic boulders constrain the last maximum of...
The environmental abundance of ¹²⁹I has been significantly increased in the Nuclear Age starting from the 1950s. Tons of anthropogenic ¹²⁹I have been discharged into the environment through anthropogenic nuclear activities. This fact allows the relative dating of spring water samples, where low concentrations of ¹²⁹I indicate waters with no surface...
The environmental abundance of 129I (T1/2 = 15.7 Ma) has been significantly altered in the Nuclear Age. Above-ground nuclear weapon tests, nuclear accidents but mostly emissions of U.S. American and European nuclear reprocessing facilities have ejected tons of anthropogenic 129I into the environment. This leads to a permanent increase of the 129I /...
129I is a long-lived radionuclide that has been introduced into the environment as a consequence of the atmospheric nuclear bomb explosions and the reprocessing of nuclear fuel. Its environmental abundance provides information on the relative time of formation of water bodies. We determined 129I concentrations from sample volumes of 0.5L precipitat...
