About
15
Publications
2,652
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
77
Citations
Citations since 2017
Introduction
My research focuses on periglacial geomorphology and glaciation history in Norway.
Publications
Publications (15)
Landslides are one of the most significant natural hazards worldwide. They can have far-reaching negative impacts on societies in different socio-economic sectors as well as on the landscape. Among the different types and processes that can also affect infrastructure and land use planning, slow-moving landslides are often underestimated. Therefore,...
Boulder-dominated landforms of periglacial, paraglacial and related origin constitute a valuable, but often unexplored source of palaeoclimatic and morphodynamic information. The timing of landform development initiation and its subsequent stabilization can be linked to past climatic conditions offering the potential to reconstruct cold climatic pe...
Mountain glaciers currently experience significant mass losses and frontal retreat at the global scale. Because mountain glaciers generally respond sensitively to climate and are differently affected by climate variations at the regional scale, they may significantly and specifically impact their natural and human environment. Norway has the larges...
Climatic impacts are especially pronounced in the Arctic, which as a region is warming twice as fast as the rest of the globe. Here, we investigate how mean climatic conditions and rates of climatic change impact parasitoid insect communities in 16 localities across the Arctic. We focus on parasitoids in a widespread habitat, Dryas heathlands, and...
The investigation of periglacial and related landforms in South Norway is of high interest for exploring
timings of deglaciation and to assess their geomorphological connectivity to palaeoclimatic changes during
the Late Quaternary and the Holocene. The ice margins of the Scandinavian Ice Sheet during the Last
Glacial Maximum (LGM) are fairly well...
We present new 10Be surface exposure ages from two selected
locations in southern Norway. A total of five 10Be samples allow a first
assessment of local deglaciation dynamics of the Scandinavian Ice Sheet at
Dalsnibba (1476 m a.s.l.) in southwestern Norway. The bedrock ages from the
summit of Dalsnibba range from 13.3±0.6 to 12.7±0.5 ka
and probabl...
Growth and decay of Quaternary glaciers and ice sheets had fundamental implications for environmental changes worldwide. The chronology of the last deglaciation following the Last Glacial Maximum (LGM, 26.5-20 ka) and its ice marginal positions in Norway are generally perceived as being well constrained. The detailed vertical extent in Norway remai...
Schmidt-hammer exposure-age dating (SHD) was applied to a variety of boulder-dominated periglacial landforms in an attempt to establish a local mid-/late-Holocene chronology for the Geirangerfjellet in South Norway. Landform ages were obtained by application of a local calibration curve for Schmidt hammer R-values based on young and old control poi...
Schmidt-hammer exposure-age dating (SHD) was performed on blockfields and related landforms on Blåhø, Southern Norway. By developing a linear high-precision age-calibration curve through young and old control points of known age from terrestrial cosmogenic nuclide dating, it was possible to gain landform age estimates based on Schmidt hammer R-valu...
Schmidt-hammer exposure-age dating (SHD) was carried out on various talus derived periglacial and paraglacial landforms around Dalsnibba (1476 m a.s.l.) in proximity to the Geiranger fjord in Opplendskedalen. The investigated landforms comprise amongst others rock-slope failures and pronival ramparts. The ages of landforms are critical in terms of...
Blockfields in high latitude mountain areas are a wide spread proxy for glaciation history. Their origin is debated since decades, especially in south-central Norway, where glaciation had a major global climate implication. Some authors explain old blockfield features by protection of cold-based ice, others claim they persisted as nunataks during t...
Schmidt-hammer exposure-age dating (SHD) was performed on various talus derived landforms on Blåhø in south-central Norway. By developing a linear high-precision age-calibration curve through young and old control points of known age from the same lithology, it was possible to determine landform age estimations. The application of Schmidt-hammer ex...
Blockfields in high latitude mountain areas are a wide spread proxy for glaciation history. They give implications on the vertical extent of and englacial boundaries within ice sheets. Glaciation history and former ice sheet configurations are important in terms of understanding atmospheric as well as oceanic circulation and temperatures, sea level...
Projects
Projects (3)
Multi-parameter, long-term monitoring of different types of landslide processes in Lower Austria
Project description
- multiple sites for various types of landslide processes
- “classic” methodologies: inclinometer, piezometer, TDR probes, weather station, total station, GNSS
- novel, innovative applications in continuous monitoring: automatic measurements (terrestrial laser scanning, ERT and wireless sensor network)/ regular monitoring via unmanned aerial vehicle (UAV)
- selected data is available in real time (permanent power and broadband internet connection)
- automatization of data management and data visualisation
- calculation of thresholds for early warning systems
Research Aims
- implementation of long-term monitoring systems (10+ years) for continuous observation of gravitational mass movements
- testing of novel and innovative methods on multiple locations
- data availability in a WebGIS application for simple online analyses for authorized users
(Aspired) results
- continuous information about landslides and related controlling and triggering factors
- estimation of potential risk for population and infrastructure
- integrative approach by including the municipalities
- evaluation of novel monitoring methods for landslides
- cooperation between university – country – municipality
- web based availability of local data (e.g. weather stations)
- WebGIS as technical support for decision makers
- potential of implementation as an early warning system
By the application of Schmidt-hammer exposure-age dating (SHD) we want to gain new information on the timing of formation and stabilization of periglacial and paraglacial landforms. By developing a linear high-precision age-calibration curve through young and old control points of known age from the same lithology, it is possible to determine landform age estimations.
The ice sheet extent during the LGM in Scandinavia is poorly known. Specific landforms like blockfields can be used as a proxy for the former vertical ice sheet extent or englacial thermal conditions. The aim of our study was to date blockfields and boulders using a multi-proxy approach, combining relative and absolute dating methods.
