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April 2012 - January 2018
Publications
Publications (46)
Since the mid-1980s, glaciers in the European Alps have shown widespread and
accelerating mass losses. This article presents glacier-specific changes in
surface elevation, volume and mass balance for all glaciers in the Swiss Alps
from 1980 to 2010. Together with glacier outlines from the 1973 inventory,
the DHM25 Level 1 digital elevation models (...
Very small glaciers (<0.5 km²) account for more than 80% of the total number of glaciers in mid- to low-latitude mountain ranges. Although their total area and volume is small compared to larger glaciers, they are a relevant component of the cryosphere, contributing to landscape formation, local hydrology, and sea-level rise. Worldwide glacier moni...
Due to the relative lack of empirical field data, the response of very small glaciers (here defined as being smaller than 0.5 km 2) to current atmospheric warming is not fully understood yet. Investigating their mass balance, e.g. using the direct glaciological method, is a prerequisite to fill this knowledge gap. Terrestrial laser scanning (TLS) t...
Glacier shrinkage and the development of post-glacial ecosystems related to anthropogenic climate change are some of the fastest ongoing ecosystem shifts, with marked ecological and societal cascading consequences1–6. Yet, no complete spatial analysis exists, to our knowledge, to quantify or anticipate this important changeover7,8. Here we show tha...
In high mountain areas, the disposition (susceptibility of occurrence) for debris flows is increasing in steep terrain, as – due to climate change – rapid glacier retreat and permafrost degradation is favouring higher availability of loose sediments. The probability of occurrence and magnitude of pro- and periglacial debris flows is increasing, too...
The term “water pocket” describes invisible en– and subglacial water reservoirs that can cause sudden glacial outburst floods. However, there is currently no consensus on its definition and the formation and rupture mechanisms of water pockets remain poorly understood. This study aims to understand the mechanisms behind water pocket outburst floods...
Glacio-hydrological models are widely used for estimating current and future streamflow across spatial scales, utilizing various data sources, notably observed streamflow and snow and/or ice accumulation, as well as ablation observations. However, modelling highly glacierized catchments poses challenges due to data scarcity and complex spatio-tempo...
In high mountain areas, the disposition for debris flows is increasing, as rapid glacier retreat and permafrost degradation is favouring higher availability of loose sediments. The probability of occurrence and magnitude is increasing, too, as triggering events such as heavy thunderstorms, long-lasting rainfalls, intense snowmelt or rain-on-snow ev...
Veröffentlicht in GeoAgenda 2024/2
Glacio-hydrological models are widely used for estimating current and future streamflow across spatial scales, utilizing various data sources, notably streamflow and snow/ice observations. However, modeling highly glacierized catchments poses challenges due to data scarcity and complex spatio-temporal meteorological conditions, leading to input dat...
Glacier shrinking and the development of postglacial ecosystems related to anthropogenic climate change is one of the fastest ongoing ecosystem shifts, with paramount ecological and societal cascading consequences globally (Huss et al., 2017; Milner et al., 2017; Cauvy and Dangles, 2019; IPCC, 2021). Yet, no complete spatial analysis exists to quan...
Unoccupied Aerial Vehicles (UAVs) equipped with optical instruments are increasingly deployed in high mountain environments to investigate and monitor glacial and periglacial processes. The comparison and fusion of UAV data with airborne and terrestrial data offers the opportunity to analyse spatio-temporal changes in the mountains and to upscale f...
Glaciers in Switzerland are shrinking rapidly in response to ongoing climate change. Repeated glacier inventories are key to monitor such changes at the regional scale. Here we present the new Swiss Glacier Inventory 2016 (SGI2016) that has been acquired based on sub-meter resolution aerial imagery and digital elevation models, bringing together to...
A glacier inventory describes the extent of all glaciers at a given point in time and in periods of rapid glacier change a frequent update is needed. The Swiss Glacier Inventory 2010 (SGI2010) is the last official inventory for Switzerland and was derived by manual digitization from high-resolution (25 cm) aerial orthophotographs from swisstopo (Fe...
Deglaciation since the Little Ice Age has exposed only a small areal proportion of alpine catchments, but these proglacial systems are disproportionately important as sediment sources. Indeed sediment yields from proglacial rivers are amongst the highest measured any- where in the World. Motivated by a desire to understand where exactly within catc...
High elevation or high latitude hydropower production (HP) strongly relies on water resources that are influenced by glacier melt and are thus highly sensitive to climate warming. Despite of the wide-spread glacier retreat since the development of HP infrastructure in the 20th century, little quantitative information is available about the role of...
Glacier response to climate forcing can be heterogeneous and complex, depending on glacier system characteristics. This article presents the decadal evolution of the Tsarmine Glacier (Swiss Alps), a very small and heavily debris-covered cirque glacier located in the Alpine periglacial belt. Archival aerial photogrammetry and autocorrelation of orth...
Due to the relative lack of empirical field data, the response of very small glaciers (< 0.5 km2) to current atmospheric warming is not fully understood yet. Investigating their mass balance is a prerequisite to fill this knowledge gap. Application of the direct glaciological method is one option. Since most recently, terrestrial laser scanning (TL...
- Geografische Lage
- Holozäne Gletscherschwankungen in den schweizer Alpen
- Der Aletsch- und Der Gornergletscher
- Die Schwankungen des Theodulgletschers
- Der Aktuelle Stand Des Theodulgletschers
- Die zukünftige Entwicklung des Oberen Theodul-Gletschers
- GLACIARCH: ein theoretisches Modell zur Bestimmung von Gebieten auf dem Theodulgletscher...
References for the paper: Morphologie, Entwicklung und archäologisches Potenzial des Theodulgletschers: gestern, heute und morgen p. 224 – 225
References for the paper „Die Penninischen Hochalpenpässe und ihr archäologisches Potenzial: ein Vorhersagemodell“ p. 224
In view of the rapid and accelerating glacier retreat observed in the European Alps during the last decades, the repeated creation of glacier inventories is important to understand the spatio-temporal variability of glacier changes and to support modeling studies. This article presents the latest glacier inventory for the entire Swiss Alps (SGI2010...
Since the mid-1980s, glaciers in the European Alps have shown widespread and accelerating mass
losses. This article presents glacier-specific changes in surface elevation, volume and mass balance
for all glaciers in the Swiss Alps from 1980 to 2010. Together with glacier outlines from the 1973
inventory, the DHM25 Level 1 Digital Elevation Model...
Since the mid-1980s, glaciers in the European Alps have shown
widespread and accelerating mass losses. This article presents
glacier-specific changes in surface elevation, volume and mass balance
for all glaciers in the Swiss Alps from 1980 to 2010. Together with
glacier outlines from the 1973 inventory, the DHM25 Level 1 Digital
Elevation Models (...
Since the mid-1980s, glaciers in the European Alps have shown widespread and accelerating mass losses. These glacier changes have been investigated in several studies both focusing on area and length changes as well as on volume losses. Because the Alps are dominated by relatively small glaciers, we argue that a sound analysis of glacier elevation...
Since the mid-1980s, glaciers in the entire European Alps have shown widespread and accelerating mass losses. These glacier changes have been investigated in several studies both focusing on area and length changes as well as on volume losses (e.g. Carturan et al. 2013, Abermann et al. 2009). By comparing the DHM25 level1 Digital Elevation Models (...
Present knowledge about Alpine glaciers is not representative in terms
of glacier size distribution. More than 80% of all Swiss glaciers are
smaller than 0.5 km2 and hence belong to the class of very small
glaciers. In the context of fast glacier wastage in the European Alps,
the near-future development of the size class distribution will most
prob...
In most cases, assessing the impacts of climatic changes on glaciers
requires knowledge about the ice thickness distribution. Miscellaneous
methodological approaches with different degrees of sophistication have
been applied to model glacier thickness so far. However, all of them
include significant uncertainty. By applying a parameterization schem...
