Journal ArticleDOI
Detecting and quantifying mountain permafrost creep from in situ inventory, space-borne radar interferometry and airborne digital photogrammetry
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In this paper, three different techniques for detecting and quantifying mountain permafrost creep are compared: (1) rock glacier inventory and characterization from in situ indicators, (2) space-borne radar interferometry, and (3) digital processing of repeated airborne imagery.Abstract:
In this paper three different techniques for detecting and quantifying mountain permafrost creep are compared: (1) rock glacier inventory and characterization from in situ indicators, (2) space-borne radar interferometry, and (3) digital processing of repeated airborne imagery. The specific characteristics of the three methods and their complementarity are investigated for the Fletschhorn mountain range in the Simplon/Saas valley region, Swiss Alps. We found that radar interferometry is suitable to quantify the degree of activity and the order of surface velocity of rock glaciers over large areas in one process, with the possibility to also detect very small movements of inactive and relict rock glaciers. On the other hand, aero-photogrammetry represents a valuable base for additional interpretation of the three-dimensional surface flow field (including speed, direction and change in thickness) of the most active rock glaciers. Results from radar interferometry can also form the basis for further detailed...read more
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Journal ArticleDOI
Permafrost and climate in Europe: Monitoring and modelling thermal, geomorphological and geotechnical responses
Charles Harris,Lukas U. Arenson,Hanne H. Christiansen,Bernd Etzelmüller,Regula Frauenfelder,Stephan Gruber,Wilfried Haeberli,Christian Hauck,Martin Hölzle,Ole Humlum,Ketil Isaksen,Andreas Kääb,Martina A. Kern-Lütschg,Michael Lehning,Norikazu Matsuoka,Julian B. Murton,Jeanette Nötzli,Marcia Phillips,Neil Ross,Matti Seppälä,Sarah M. Springman,Daniel Vonder Mühll +21 more
TL;DR: In this article, the authors present a review of the changing state of European permafrost within a spatial zone that includes the continuous high latitude arctic permfrost of Svalbard and the discontinuous high altitude mountain permaffrost of Iceland, Fennoscandia and the Alps.
Journal ArticleDOI
Permafrost creep and rock glacier dynamics
Wilfried Haeberli,Bernard Hallet,Lukas U. Arenson,Roger Elconin,Ole Humlum,Andreas Kääb,Viktor Kaufmann,Branko Ladanyi,Norikazu Matsuoka,Sarah M. Springman,Daniel Vonder Mühll +10 more
TL;DR: In this article, a review paper examines thermal conditions (active layer and permafrost), internal composition (rock and ice components), kinematics and rheology of creeping perennially frozen slopes in cold mountain areas.
Journal ArticleDOI
Combination of SRTM3 and repeat ASTER data for deriving alpine glacier flow velocities in the Bhutan Himalaya
TL;DR: In this paper, the authors evaluated the fusion of DEMs from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument and the Shuttle Radar Topography Mission (SRTM).
Journal ArticleDOI
Remote sensing of glacier- and permafrost-related hazards in high mountains: an overview
Andreas Kääb,Christian Huggel,Luzia Fischer,S. Guex,Frank Paul,I. Roer,Nadine Salzmann,S. Schlaefli,K. Schmutz,Demian Schneider,Tazio Strozzi,Y. Weidmann +11 more
TL;DR: In this paper, the authors provide an overview of air and spaceborne remote sensing methods suitable for glacier and permafrost hazard assessment and disaster management. But the authors do not consider the use of satellite stereo-derived DTMs with the DTM from the Shuttle Radar Topography Mission (SRTM).
Journal ArticleDOI
Survey and monitoring of landslide displacements by means of L-band satellite SAR interferometry
Tazio Strozzi,Paolo Farina,Alessandro Corsini,Christian Ambrosi,Manfred Thüring,Johannes Zilger,Andreas Wiesmann,Urs Wegmüller,Charles Werner +8 more
TL;DR: In this paper, the capabilities of L-band satellite SAR interferometry for the investigation of landslide displacements have been analyzed together with C-band ERS-1/2 SAR data and in situ information.
References
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Journal ArticleDOI
Synthetic aperture radar interferometry
Paul A. Rosen,S. Hensley,Ian Joughin,F.K. Li,Soren N. Madsen,Ernesto Rodriguez,Richard M. Goldstein +6 more
TL;DR: In this paper, the authors present a review of the techniques of interferometry, systems and limitations, and applications in a rapidly growing area of science and engineering, including cartography, geodesy, land cover characterization, and natural hazards.
Journal ArticleDOI
Synthetic aperture radar interferometry
Richard Bamler,Philipp Hartl +1 more
TL;DR: In this article, a review of the technology and signal theoretical aspects of InSAR is presented, where the phase differences of at least two complex-valued SAR images acquired from different orbit positions and/or at different times are exploited to measure several geophysical quantities, such as topography, deformations, glacier flows, ocean currents, vegetation properties, etc.
Journal ArticleDOI
Monitoring high-mountain terrain deformation from repeated air- and spaceborne optical data: examples using digital aerial imagery and ASTER data
TL;DR: In this article, the authors apply standard software to automatically generate digital elevation models (DEM) from aerial photography and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite stereo imagery.
Book
Rockglaciers: Indicators for the Present and Former Geoecology in High Mountain Environments
TL;DR: In this paper, the inner core of an active rockglacier has been studied and compared with other types of active rock glaciers, such as Tongue-Shaped Rockglaciers and Macun and Arapaho.
Journal ArticleDOI
The effect of rise in mean annual temperature on the stability of rock slopes containing ice‐filled discontinuities
TL;DR: In this paper, the stiffness and strength of an ice-filled joint are a function of both normal stress and temperature, which implies that if the stability of a slope is maintained by icefilled joints, its factor of safety will reduce with temperature rise.