Regula Frauenfelder

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Glacier distribution and glacier changes were investigated in the Upper Brahmaputra River Basin using remote sensing and GIS in order to determine the influence of melting glaciers on the long-term runoff of the Brahmaputra River (EU-project BRAHMATINN). Current glacier distribution and glacier changes since the 1970/80s were mapped using multi-temporal(More)
In Norway, deformation monitoring of dams is regulated by law; traditionally it is done by geodetic measurements [1]. To ensure early recognition of problem areas at the dam and/or at the slopes around the reservoir, frequent deformation measurements are necessary. Here, we investigate the feasibility of applying satellite based SAR interferometry to(More)
This work concerns a proposal of the integration of InSAR (Interferometric Synthetic Aperture Radar) data acquired by ground-based (GB) and satellite platforms. The selected test site is the Åknes rockslide, which affects the western Norwegian coast. The availability of GB-InSAR and satellite InSAR data and the accessibility of a wide literature make the(More)
Each year, snow avalanches hit populated areas and parts of the transport network in the Norwegian mountain regions, leading to loss of lives and the damaging of buildings and infrastructure. We present the results of a feasibility study on the operation of a service providing the National Public Roads Administration (NPRA) with hind-cast avalanche(More)
Long-term ice-core records of Alpine glaciers are usually taken from cold-firn areas at high altitudes, as on Mont Blanc and Monte Rosa. Perennial ice bodies at lower altitudes, however, also bear information about the past. Recent findings from the remains of such ice (the Oetztal iceman found in Austria; wooden bows at Lötschen Pass, Switzerland) clearly(More)
Using eCognition we developed an algorithm to automatically detect and map avalanche deposits in Very High Resolution (VHR) optical remote sensing imagery acquired from satellites and airplanes. The algorithm relies on a cluster-based object-oriented image interpretation approach which employs segmentation and classification methodologies to identify(More)
A calorimeter was developed which is capable of measuring heats of reaction with high precision, without making use of a precision thermostat. In comparison with conventional heat flow calorimeters, the measuring time is reduced considerably by electronic means. The reproducibility is comparable to that of adiabatic calorimeters, while the operation is(More)
The high-mountain mass-transport systems are the results of steady mass shifts and catastrophic mass-movement events. The equilibrium of these systems is markedly influenced by ice occurrence, which makes high mountains especially sensitive to climate impacts [1]. The creeping and thawing of frozen debris, often found as permafrost, is a significant factor(More)
Of special interest within the field of avalanche research and avalanche warning are properties related to snow grain type and snow grain size at the surface. In continental and intermountain avalanche climates weak layers or interfaces are the main cause of avalanches. Knowledge about such weak layers helps to increase the precision of avalanche(More)
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