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Rouyet, Line; Lilleøren, Karianne Staalesen; Etzelmüller, Bernd; Kääb, Andreas Max; Christiansen, Hanne H. & Humlum, Ole
[Show all 9 contributors for this article]
(2022).
SAR satellite remote sensing for mapping and monitoring Norwegian rock glaciers.
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Paul, Frank; Piermattei, Livia; Treichler, Désirée; Gilbert, Lin; Wuite, Jan & Strozzi, Tazio
[Show all 7 contributors for this article]
(2022).
Three different glacier surges at a spot: What satellites observe and what not.
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Leclercq, Paul Willem; Kääb, Andreas; Altena, Bas & Bazilova, Varvara
(2021).
Detection of glacier surge activity using cloud computing of Sentinel-1 radar data.
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Andreassen, Liss Marie; Moholdt, Geir & Kääb, Andreas
(2021).
Satellitter overvåker norske breer. Det er det gode grunner til.
[Newspaper].
Aftenposten.
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Truffer, M; Kääb, Andreas; Harrison, W.D.A.; Ospisova, G.; Nosenko, G. & Espizua, Lydia
[Show all 11 contributors for this article]
(2021).
Chapter 13 - Glacier surges.
In Haeberli, Wilfried (Eds.),
Snow and Ice-Related Hazards, Risks, and Disasters (Second Edition).
Elsevier.
ISSN 978-0-12-817129-5.
p. 417–466.
doi:
10.1016/B978-0-12-817129-5.00003-2.
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Hugonnet, Romain; McNabb, Robert Whitfield; Berthier, Etienne; Menounos, B.; Nuth, Christopher & Girod, Luc Maurice Ramuntcho
[Show all 10 contributors for this article]
(2020).
A globally complete, spatially and temporally resolved estimate of glacier mass change: 2000 to 2019.
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McNabb, Robert Whitfield; Girod, Luc Maurice Ramuntcho; Nuth, Christopher & Kääb, Andreas
(2020).
An open-source toolset for automated processing of historic spy photos: sPyMicMac.
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Hugonnet, Romain; McNabb, Robert Whitfield; Berthier, Etienne; Menounos, B; Nuth, Christopher & Girod, Luc Maurice Ramuntcho
[Show all 10 contributors for this article]
(2020).
Accelerated global glacier mass loss in the early twenty-first century.
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Alexander, Andreas; Obu, Jaroslav; Schuler, Thomas; Kääb, Andreas & Christiansen, Hanne H
(2020).
Subglacial permafrost dynamics and erosion inside subglacial channels driven by surface events in Svalbard.
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Kääb, Andreas
(2019).
The Ocean and Cryosphere in a Changing Climate.
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Kääb, Andreas
(2019).
The Ocean and Cryosphere in a Changing Climate
.
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Kääb, Andreas
(2019).
The Ocean and Cryosphere in a Changing Climate.
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Kääb, Andreas
(2019).
The Ocean and Cryosphere in a Changing Climate.
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Kääb, Andreas
(2019).
A new era for observing glaciers from space.
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Kääb, Andreas
(2019).
Collapsing Glaciers.
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Kääb, Andreas & Treichler, Désirée Silvana
(2019).
High Mountain Asia glacier changes in the early 21st century.
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Altena, Bas & Kääb, Andreas
(2019).
Shifts in surface, speed, or shadows: What do we measure with different time-of-day overpasses of Sentinel-2.
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Altena, Bas & Kääb, Andreas
(2019).
Techniques to reveal inter-annual glacier flow from optical remote sensing.
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Alexander, Andreas; Kruusma, Maarja; Tuhtan, Jeffrey; Hodson, Andrew; Schuler, Thomas & Kääb, Andreas
(2019).
Sensing drifters as tool for glacial hydrology measurements.
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Alexander, Andreas; Kruusma, Maarja; Tuhtan, Jeffrey; Hodson, Andrew; Schuler, Thomas & Kääb, Andreas
(2019).
Sensing drifters as tool for glacial hydrology measurements.
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Altena, Bas & Kääb, Andreas
(2019).
River ice velocity from Sentinel-twogether and PROBA-VELOCITY.
Show summary
Most optical satellite systems are set in a sun-synchronous orbit. Because of such similar configurations, orbits-of-opportunity arise. These are combinations of satellites that sense near-simultaneously. Consequently, more information can be generated from a single satellite mission when it is orchestrated with another. Hence, one tactic is to let a small-satellite piggyback with a monitoring program.
In this study we demonstrate such a strategy where we make use of the PROBA-V small-satellite in combination with Sentinel-2. The inclination of both satellites are very similar, as well as, their overpass time. This makes large scale extraction of displacements possible. One such application that can make use of this recording sequence is the monitoring of river ice break-up. In spring the melting season sets in and Arctic rivers increase in flow discharge. Eventually the water is able to break the ice cover, which will then float along. However, congestion of this ice results in jamming, associated flooding and ice run, causing damage to infrastructure and river banks. The long stretch of rivers make monitoring difficult, thus satellite remote sensing can be a means for identifying bottlenecks.
The resolution of Proba-V is 100 meters, but the time separation results in drift of the floating ice in the order of 1 km. Hence, from data of this satellite pair we are able to generate a dense velocity field over the Lena River in Russia, which stretches more than 300 km. This study demonstrates the potential of the Sentinels as an umbrella for other smaller missions. This near-simultaneous configuration has not been envisioned as a mission objective, but is coincidence. However for a future small-satellite design through clever orbit configurations can easily enhance a satellites product portfolio.
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Altena, Bas; Schellenberger, Thomas & Kääb, Andreas
(2019).
Bringing together remote sensing data to produce region-wide glacier velocities.
Show summary
The recent increase of medium resolution satellite programs that consistently senses the Earth surface has brought great potential for glaciology. Satellites like the Sentinel-1&2 tandems, Landsat 7&8 duo and Rapideye constellation sense mountain ranges almost without missing a day. Consequently, high resolution time-series can be constructed, for snow-cover or crack propagation, or other single scene information. Properties derived from combinations of acquisitions, such as, glacier velocity is more challenging. Velocity estimation is based upon image matching, which can be hindered by coherence loss or cloud cover. Consequently, generated velocity data have gaps and have scattered coverage at different time intervals.
This steady data stream has resulted in several initiatives to use image matching techniques in batch processing mode. Resulting in glacier velocity services being set-up (e.g.: cryoportal, GoLIVE, Geodetic data portal), but these initiatives are satellite specific. If such products are merged it is possible to increase temporal and spatial coverage and increase the reliability of the velocity estimates. We developed such a workflow that merges glacier velocity products of different time spans and type. This combined dataset covers several mountain ranges and has a regular time step at a monthly pace. This consistent time-series make it possible to observe glacier dynamics that are of short nature. As the satellite recordings already span several years, the dynamics of tidewater glaciers or (partial) surges can be observed and analyzed. This study therefor shows the great potential of bringing together different satellite systems.
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Altena, Bas; Armstrong, William & Kääb, Andreas
(2019).
On the origin of ogives.
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Altena, Bas; Scambos, Ted A; Fahnestock, M & Kääb, Andreas
(2018).
Automatic extraction of velocity time-series at mountain range scale from Landsat 8.
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Nuth, Christopher; Kohler, Jack; Köhler, Andreas; Lefeuvre, Pierre-Marie; Schuler, Thomas & Van Pelt, Ward
[Show all 12 contributors for this article]
(2018).
The different dynamic personalities of two neighboring tidewater glaciers.
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Gilbert, Adrien; Thøgersen, Kjetil; Kääb, Andreas; Nuth, Christopher; Schuler, Thomas & Gimbert, Florent
(2018).
Stable and unstable glacier flows:
Role of friction law and feedback mechanisms at the basal interface
.
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Girod, Luc Maurice Ramuntcho; Nielsen, Niels Ivar; Couderette, Frédérique; Hoslt, Marion Dominique; Lazizi, Laetitia Alice & Nuth, Christopher
(2018).
Extraction of glacier thickness change data and communication material from historical oblique imagery.
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Altena, Bas & Kääb, Andreas
(2018).
High-resolution surface and upper fjord circulation of Greenland fjords from optical remote sensing .
Show summary
Water within Greenland's fjords functions as conduit between the ice sheet and the Atlantic ocean. Exchange of energy and mass in the proglacial fjords is mainly driven by tides, wind, density fluctuations, glacial discharge and calving. All these forces change or alternate at different time scales and/or places. Measuring related (sub)surface fluxes in these fjords is complicated as fjord-ice hampers logistics and iceberg migration is able to damage measurement installations. However, an increasing fleet of optical satellites are sensing the Earth surface and can in this way observe Greenland fjords at multiple times a day.
In this study we introduce a novel type of surface velocity extraction over even short time scales (minutes and hours apart), which exploits the multitude of satellites images taken daily over specific sites and is able to separate the surface velocities from the flows occurring lower in the water column. The resulting velocity fields are able to capture small scale features (±10m) over the full range of large fjords (±100km). Imagery from the Planet constellation, Sentinel-2 and Landsat 8 are used to extract the (sub)surface flow regime of Sermilik fjord. This can be estimated for several days within a week, making it possible to capture whole fjord variability and the mode of fjord circulation. Such detailed and complete circulation information will help to complement in-situ measurements and improve the modelling of ice-ocean interaction.
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Altena, Bas & Kääb, Andreas
(2018).
Doves & displacements.
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Altena, Bas & Kääb, Andreas
(2018).
Sensing a moving Arctic from space.
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Altena, Bas & Kääb, Andreas
(2018).
ICEFLOW: short-term movements in the cryosphere.
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Altena, Bas & Kääb, Andreas
(2018).
Kinematics in the Cryosphere from space.
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Haugnes, Gunhild M.; Tallaksen, Lena M.; Vogt, Rolf David; Storelvmo, Trude; Hessen, Dag Olav & Stordal, Frode
[Show all 9 contributors for this article]
(2018).
Klimaforskerne tar temperaturen på tropesommeren.
[Journal].
Titan.uio.no.
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Brun, Fanny; Berthier, Etienne; Wagnon, Patrick; Kääb, Andreas & Treichler, Désirée Silvana
(2018).
Author Correction: A spatially resolved estimate of High Mountain Asia glacier mass balances from 2000 to 2016.
Nature Geoscience.
ISSN 1752-0894.
doi:
10.1038/s41561-018-0171-z.
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Treichler, Désirée Silvana & Kääb, Andreas
(2017).
Measuring snow depth with a spaceborne laser.
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Treichler, Désirée Silvana; Kääb, Andreas; Brun, Fanny; Berthier, Etienne & Wagnon, Patrick
(2017).
DEM differencing for glacier mass balance in HMA.
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Lefeuvre, Pierre-Marie & Kääb, Andreas
(2017).
Surging glaciers in the Karakoram.
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Altena, Bas & Kääb, Andreas
(2017).
Glacier ice loss monitored through the Planet cubesat constellation.
Show summary
The Planet cubesat constellation is a developing earth observation constellation, that is and will continue to sense the whole earth surface on a daily scale at high resolution. In this contribution, we exploit this datastream to estimate the iceberg production of an outlet glacier of the Southern Patagonian icefield, called Perito Moreno. We demonstrate an automatic pipeline that takes into account the displacement due to glacier motion and the ad-hoc coverage of the glacier, due to different observation angles and orbits. With such a robust and adaptive pipeline, constructing a high resolution and temporal dense dataset is possible to be obtained. Which is of great value to understand the complex behavior of calving.
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Schellenberger, Thomas; Van Wychen, Wesley; Copland, Luke; Kääb, Andreas & Gray, Laurence
(2017).
Glacier surface velocities of the Svalbard Archipelago.
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Schellenberger, Thomas; Dunse, Thorben; Kääb, Andreas; Schuler, Thomas; Hagen, Jon Ove Methlie & Reijmer, Carleen
(2017).
Multi-year surface velocities and sea-level rise contribution of the Basin-3 and Basin-2 surges, Austfonna, Svalbard.
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Treichler, Désirée Silvana; Kääb, Andreas; Nuth, Christopher & Berthier, Etienne
(2016).
HMA's glaciers seen by a space laser - potential and pitfalls of continental-scale remote sensing.
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Treichler, Désirée Silvana; Kääb, Andreas & Melvold, Kjetil
(2016).
Across spatial scales: Snow depth from satellite and airborne LiDAR combined.
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Treichler, Désirée Silvana; Kääb, Andreas; Salzmann, Nadine & Shea, Joseph
(2016).
Recent glacier changes in High Mountain Asia: A spatially diverse pattern.
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Winsvold, Solveig Havstad; Kääb, Andreas; Nuth, Christopher & Altena, Bas
(2016).
Landsat time-series analysis opens new approaches for regional glacier mapping.
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Winsvold, Solveig Havstad; Kääb, Andreas; Nuth, Christopher; Andreassen, Liss Marie; Van Pelt, Ward & Schellenberger, Thomas
(2016).
Regional glacier mapping by combination of dense optical and SAR satellite image time-series.
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Winsvold, Solveig Havstad; Kääb, Andreas; Nuth, Christopher; Van Pelt, Ward J.J.; Andreassen, Liss Marie & Schellenberger, Thomas
(2016).
Glacier mapping using combined optical and SAR time-series.
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Winsvold, Solveig Havstad; Kääb, Andreas; Altena, Bas & Nuth, Christopher
(2016).
Using a new optical satellite for investigating glaciers and Jøkulhlaups.
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Winsvold, Solveig Havstad; Kääb, Andreas & Nuth, Christopher
(2016).
Using Dense Time-Series of Optical Satellite Images for Glacier Mapping Purposes.
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Winsvold, Solveig Havstad; Kääb, Andreas; Andreassen, Liss Marie & Hagen, Jon Ove Methlie
(2016).
Investigating glaciers using time-series of remote sensing data.
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Winsvold, Solveig Havstad; Kääb, Andreas & Nuth, Christopher
(2016).
Potential of using dense time-series of optical satellite imagery for future glacier mapping.
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Winsvold, Solveig Havstad; Kääb, Andreas; Nuth, Christopher & Altena, Bas
(2016).
Fusion of Optical and SAR Time-series for Glacier Mapping Applications
.
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Winsvold, Solveig Havstad; Kääb, Andreas; Altena, Bas & Nuth, Christopher
(2016).
The potential of Sentinel-2 for investigating glaciers and glacier lakes.
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Obu, Jaroslav; Westermann, Sebastian; Kääb, Andreas & Bartsch, Annett
(2016).
Mapping the Thermal State of Permafrost Through Modelling and Remote Sensing in ESA GlobPermafrost Project.
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Nuth, Christopher; Kääb, Andreas; Westermann, Sebastian & Winsvold, Solveig Havstad
(2016).
Climate Change from Global Monitoring of Glaciers and Permafrost.
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Nuth, Christopher; Girod, Luc Maurice Ramuntcho; Winsvold, Solveig Havstad; Deschamps Berger, Cesar; Berthier, Etienne & Kääb, Andreas
(2016).
Remote Sensing in Ny Ålesund: Products, purpose and validation.
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Nuth, Christopher; Kääb, Andreas; Kohler, Jack & Berthier, Etienne
(2016).
Elevation changes of glaciers, glacier surges, and snow/firn pack variability from TanDEM-X time series DEMs in Northwest Svalbard.
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Altena, Bas; Leclercq, Paul Willem & Kääb, Andreas
(2016).
Automatic monitoring of the transient snowline on mountain glaciers.
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Altena, Bas & Kääb, Andreas
(2016).
Estimating the seasonal glacier flow-field evolution of Kronebreen from the SPOT5-take5 campaign.
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Altena, Bas & Kääb, Andreas
(2016).
Why is my orthophoto distorted?
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Altena, Bas & Kääb, Andreas
(2016).
Glacier photogrammetry.
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Altena, Bas & Kääb, Andreas
(2016).
Exploiting orthorectification offsets in optical satellite data for glacier elevation change and velocity.
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Gilbert, Adrien; Kääb, Andreas & Schuler, Thomas
(2016).
GlacierFlows: processes at the glacier base and their significance for ice movement.
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Girod, Luc Maurice Ramuntcho; Nuth, Christopher & Kääb, Andreas
(2016).
Enhanced ASTER DEMs for Decadal Measurments of Glacier Elevation Changes.
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Girod, Luc Maurice Ramuntcho; Nuth, Christopher & Kääb, Andreas
(2016).
Glacier volume change estimation using time series of improved ASTER DEMs.
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Girod, Luc Maurice Ramuntcho; Nuth, Christopher & Kääb, Andreas
(2016).
Opportunistic survey of glaciers using GoPros and helicopters.
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Schellenberger, Thomas; Dunse, Thorben; Kääb, Andreas; Schuler, Thomas; Hagen, Jon Ove Methlie & Reijmer, Carleen
(2016).
The surge must go on: extended surface velocity time series and frontal ablation estimates of Basin-3 (and Basin-2), NE-Svalbard.
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Kääb, Andreas & Altena, Bas
(2016).
An icy Planet.
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Kääb, Andreas & Altena, Bas
(2016).
Microsatellite constellations for monitoring cryospheric processes and related natural hazards.
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Kääb, Andreas; Treichler, Désirée Silvana; Girod, Luc Maurice Ramuntcho; Lefeuvre, Pierre-Marie; Schellenberger, Thomas & Altena, Bas
[Show all 9 contributors for this article]
(2016).
On the Karakoram anomaly.
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Kääb, Andreas
(2016).
Remote sensing of glacier hazards.
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Kääb, Andreas
(2016).
Remote sensing activities connected to ERC AdG ICEMASS.
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Kääb, Andreas; Girod, Luc Maurice Ramuntcho & Berthling, Ivar Thoralf
(2016).
Surface kinematics of periglacial sorted circles
over 8 years using SfM close range photogrammetry.
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Girod, Luc Maurice Ramuntcho; Kääb, Andreas & Berthling, Ivar Thoralf
(2016).
Surface kinematics of periglacial sorted circles over 8 years
using SfM close-range photogrammetry.
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Kääb, Andreas
(2016).
Variations in rockglacier speed in the Tien Shan.
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Kääb, Andreas; Winsvold, Solveig Havstad; Altena, Bas & Nuth, Christopher
(2016).
The potential of Sentinel-2 for investigating glaciers, permafrost and related natural hazards.
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Kääb, Andreas
(2016).
Cold-regions river flow from near-simultaneous space imagery.
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Kääb, Andreas
(2016).
Mount Kazbek: thrones of the gods of high-speed avalanches.
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Kääb, Andreas
(2016).
Glacier lake outburst assessment from space.
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Girod, Luc Maurice Ramuntcho; Nuth, Christopher; Kääb, Andreas; Etzelmüller, Bernd & Kohler, Jack
(2016).
Terrain changes from images acquired on opportunistic flights by SFM photogrammetry.
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Kääb, Andreas
(2016).
Remote Sensing of Glaciers and Permafrost. Needs and Opportunities
.
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Kääb, Andreas
(2016).
Svalbards isbreer på vei mot havet.
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Kääb, Andreas
(2016).
Svalbards isbreer på vei mot havet.
-
Kääb, Andreas
(2016).
Climate Change from Global Monitoring of Glaciers and Permafrost.
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Winsvold, Solveig Havstad; Kääb, Andreas; Altena, Bas & Nuth, Christopher
(2016).
Radiometrisk og geometrisk ytelse av Sentinel-2 relatert til brekartlegging.
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Winsvold, Solveig Havstad; Kääb, Andreas & Nuth, Christopher
(2015).
Regional glacier mapping from time-series of Landsat type data.
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Altena, Bas & Kääb, Andreas
(2015).
Increasing information content of multi-spectral imagery for glacier mapping.
Show summary
Optical image matching is a powerful technique to extract glacier velocities. This technique is able to work in a highly automatic fashion, and is thus a valuable tool for large scale glacier analysis. Image matching relies on the principle of persistent surface features which can be identified in an image pair. For glacier velocity estimation, these features are typically crevasses, meltwater channels, debris, dust patterns, etc. Thus in order to successfully match two images, such features should be the most dominant objects in the image, in respect to other phenomena which are short lived. To reach such an optimum, several spectral bands can be chosen, or the higher resolution panchromatic band. However, every option has its pro and con’s, and this study aims at combining these aspects to come to an optimal image.
Our method drives on the linearity and cross-spectral correlation between spectral bands. The panchromatic band is the backbone of the image, and additional information is included from the near infrared (NIR) and short wave infrared (SWIR). Consequently, saturation is detected and adjusted. All this can be done in an automatic fashion, and is precluded against snow properties of which the SWIR is highly reactive to.
We assess our methodology qualitatively by looking at the top of the correlation score, but also the spread of this peak through Gaussian fitting. The correlation score is related to the reliability of a measurement, while the spread is a proxy for its precision. Matching is done over a large sample set of glaciers, which change in, season, glacier type, and lithology. Furthermore, from our theory we can explain why principle component analysis (PCA) is a powerful pre-processing step. Nevertheless our method seems to perform better, and from our theory we can identify weaknesses in PCA. Furthermore, our method is tested against a higher spatial- and radiometric-resolution acquisition. This gives more confidence in our claims, and justifies our methodological decisions.
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Altena, Bas; Kääb, Andreas & Nuth, Christopher
(2015).
Robust glacier displacements using knowledge-based image matching.
Show summary
Matching of repeat optical satellite images is a powerful tool for the analysis of glacier movement. Due to the rapid growth of earth observation data archives there is an increasing potential for regional glacier flow studies on a decadal scale. However, exploitation of these image collections is hindered by the currently manual pre- and post-processing steps required. Automating these steps, and using content from all available imagery will help tap the wealth of information present within the data. In this study we explore this possibility with the aim to extract velocity fields that are both accurate and reliable. We propose a bottom-up approach in which simple image matching estimates from three images are pierced together, to give rise to the far more complex time-dependent glacier flow. Taking advantage of our knowledge of glacier behavior, rather then crude statistical inferences. We first loosen the threshold of the matching, estimating dispersions for every candidate match. Then by implementing the procedure for multiple time periods we constrain the solution making it possible to apply probabilistic testing. Our approach is alternative to common top-down implementations and instead derives from first principles. In summary, we introduce the concept of precision and reliability of image matching which enhances the analysis of velocity fields with hypothesis model testing to investigate its driving forces.
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Kääb, Andreas
(2015).
Glaciers as seen from space (European Space Expo).
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Kääb, Andreas
(2015).
Satellite measuremements of Earth's glaciers.
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Kääb, Andreas; Treichler, Désirée Silvana; Nuth, Christopher & Berthier, Etienne
(2015).
Glacier volume change 2003-2008 in the Pamir-Hindu Kush-Karakoram-Himalaya.
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Winsvold, Solveig Havstad; Kääb, Andreas & Nuth, Christopher
(2015).
Analysis of temporal signatures on glaciers using optical satellite scenes.
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Winsvold, Solveig Havstad; Kääb, Andreas & Nuth, Christopher
(2015).
Improved mapping of glaciers using time-series of optical satellite images.
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Winsvold, Solveig Havstad; Kääb, Andreas & Nuth, Christopher
(2015).
Analysis of temporal signatures on glaciers using optical satellite data.
EARSeL Workshop Proceedings.
ISSN 1681-7486.
-
Kääb, Andreas; Treichler, Désirée Silvana; Nuth, Christopher & Berthier, Etienne
(2015).
Brief Communication: Contending estimates of 2003-2008 glacier mass balance over the Pamir-Karakoram-Himalaya.
The Cryosphere.
ISSN 1994-0416.
9(2),
p. 557–564.
doi:
10.5194/tc-9-557-2015.
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Dunse, Thorben; Schellenberger, Thomas; Hagen, Jon Ove Methlie; Kääb, Andreas; Schuler, Thomas & Reijmer, Carleen
(2015).
A surge of the Austfonna ice cap, Svalbard, promoted by a hydro-thermodynamic feedback to summer melt.
-
Winsvold, Solveig Havstad & Kääb, Andreas
(2014).
Assessing the potential of mapping glaciers using time-series of optical satellite imagery.
-
Schellenberger, Thomas; Dunse, Thorben; Kääb, Andreas & Kohler, Jack
(2014).
Velocity variations and calving flux of Kronebreen, NW-Svalbard from SAR offset tracking
.
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Antonova, Sonya; Langer, Moritz; Kääb, Andreas; Heim, Birgit; Boike, Julia & Bartsch, Annett
[Show all 7 contributors for this article]
(2014).
Spatial and temporal variability of the interferometric coherence based on TerraSAR-X imagery of the central Lena River Delta.
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Van Wychen, Wesley; Schellenberger, Thomas; Copland, Luke; Kääb, Andreas & Gray, Laurence
(2013).
An inter-comparison of techniques for determining glacier velocities over Svalbard.
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Nuth, Christopher; Kohler, Jack; Schellenberger, Thomas; Schuler, Thomas; Kääb, Andreas & Hagen, Jon Ove Methlie
(2013).
Combining remote sensing and surface mass balance observations/modeling to partition mass changes of Kronebreen, northwest Svalbard.
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Dunse, Thorben; Schellenberger, Thomas; Hagen, Jon Ove Methlie; Kääb, Andreas; Schuler, Thomas & Reijmer, Carleen
(2013).
On a major surge of Austfonna.
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Kääb, Andreas
(2013).
Glacier monitoring from space.
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Kääb, Andreas
(2013).
Glacier monitoring from space.
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Kääb, Andreas; Schellenberger, Thomas & Dunse, Thorben
(2013).
A large glacier surge on Austfonna, Svalbard, from TerraSAR-X offset tracking.
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Kääb, Andreas
(2012).
Remote sensing technologies for geohazards.
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Kääb, Andreas
(2012).
River ice flux and water velocities from space.
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Kääb, Andreas; Nuth, Christopher & Berthier, Etienne
(2012).
Contrasting patterns of early twenty-first-century glacier mass change in the Himalayas.
-
Kääb, Andreas & Nuth, Christopher
(2012).
Contrasting patterns of early twenty-first-century glacier mass changes in the Himalayas.
-
Kääb, Andreas
(2012).
Glacier changes in the Himalayas, and what a laser altimeter from space misses.
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Nuth, Christopher; Kohler, Jack; König, Max; Hagen, Jon Ove Methlie; Kääb, Andreas & Moholdt, Geir
(2012).
The Svalbard Glacier Database V1 And V2: creation, parameters and changes.
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Nuth, Christopher & Kääb, Andreas
(2012).
Co-registration and bias correction of elevation data.
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Kääb, Andreas
(2012).
Glacier mapping and monitoring from space.
-
Kääb, Andreas
(2012).
Satellite along-track acquisition time lags. Principles and applications.
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Kääb, Andreas; Heid, Torborg & Debella-Gilo, Misganu
(2012).
Recent advances in measurement of glacier flow using repeat optical images.
-
Kääb, Andreas
(2012).
Glacier mapping and monitoring from space.
-
Kääb, Andreas & Nuth, Christopher
(2012).
Glaciers-cci: velocity and elevation changes.
-
Kääb, Andreas
(2012).
Glacier mapping and monitoring from Sentinel-2.
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Schellenberger, Thomas; Heid, Torborg; Dunse, Thorben; Nuth, Christopher; Reijmer, Carleen & Kohler, Jack
[Show all 7 contributors for this article]
(2012).
Calving flux of Svalbards tidewater glaciers estimated from remote sensing-based surface velocities
.
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Schellenberger, Thomas; Heid, Torborg; Dunse, Thorben; Nuth, Christopher; Kohler, Jack & Hagen, Jon Ove Methlie
(2012).
Calving flux of Svalbards tidewater glaciers estimated from remote sensing-based surface velocities
.
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Kääb, Andreas & Prowse, Terry
(2011).
River surface velocity fields observed from space.
-
Kääb, Andreas
(2011).
Remote sensing of geohazards.
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Kääb, Andreas
(2011).
Current research at Physical Geography, Dept. of Geosciences.
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Kääb, Andreas
(2011).
River flow and ice fluxes from space.
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Kääb, Andreas
(2011).
Cold regions river flow from space.
-
Kääb, Andreas
(2011).
Two unconvential applications of image matching: (i) Development of patterned ground, and (ii) River flow.
-
Kääb, Andreas
(2011).
Cold-regions river flow from space.
-
Kääb, Andreas
(2011).
Glaciers as seen from space.
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Nuth, Christopher; Kohler, Jack; Kääb, Andreas & König, Max
(2011).
An analysis of area and elevation changes in Southern Svalbard: 1936-1990-2008.
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Nuth, Christopher & Kääb, Andreas
(2011).
Remote Sensing and Geomatics in Glaciology.
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Heid, Torborg & Kääb, Andreas
(2011).
Evaluation of different image matching methods for deriving glacier surface displacements globally from optical satellite imagery.
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Heid, Torborg & Kääb, Andreas
(2011).
Reduced glacier speeds in large regions of the world revealed using optical satellite images.
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Heid, Torborg & Kääb, Andreas
(2011).
Evaluation of existing image matching methods for deriving glacier surface displacements globally from optical satellite imagery.
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Heid, Torborg & Kääb, Andreas
(2011).
Evaluation of different image matching methods for deriving glacier displacements.
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Schneevoigt, Nora Jennifer; van der Linden, Sebastian; Sund, Monica; Bogren, Wiley Steven; Moholdt, Geir & Kääb, Andreas
[Show all 7 contributors for this article]
(2011).
Fernerkundung im geographischen Kontext - Ergebnisse eines Forschungsprojekts zwischen Bonn, Zürich und Oslo.
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Schneevoigt, Nora Jennifer; Bogren, Wiley Steven; Sund, Monica; Weydahl, Dan Johan & Kääb, Andreas
(2011).
Gletscherbewegungen auf Spitzbergen aus differentieller SAR-Interferometrie.
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Casey, Kimberly Ann & Kääb, Andreas
(2010).
Spectral variability of debris covered glaciers via optical remote sensing: examples from Iceland, Khumbu Himalaya, New Zealand and Norway.
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Kääb, Andreas
(2010).
Remote sensing, monitoring and early warning systems of geohazards.
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Kääb, Andreas
(2010).
Cryospheric Systems - dynamic climate indicators, resource and hazard.
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Kääb, Andreas
(2010).
Observation of permafrost from satellites.
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Kääb, Andreas
(2010).
Spaceborne remote sensing of glaciers and related hazards.
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Kääb, Andreas & Berthling, Ivar Thoralf
(2010).
Particle movement on sorted circles measured from repeat terrestrial photos.
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Schneevoigt, Nora Jennifer; Kääb, Andreas; Bogren, Wiley; Sund, Monica & Weydahl, Dan Johan
(2010).
Comparison of 2-pass differential SAR interferometry (DInSAR) using two different elevation models to 4-pass DInSAR. A test study near Ny Ålesund, Svalbard.
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Schneevoigt, Nora Jennifer; Bogren, Wiley; Sund, Monica; Weydahl, Dan Johan & Kääb, Andreas
(2010).
Glacier displacement of Comfortlessbreen, Svalbard, estimated by differential SAR interferometry (DInSAR) with digital elevation model (DEM).
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Schneevoigt, Nora Jennifer; Bogren, Wiley; Sund, Monica; Weydahl, Dan Johan & Kääb, Andreas
(2010).
Deriving glacier flow of Comfortlessbreen, Svalbard, with 2-pass differential SAR interferometry.
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Debella-Gilo, Misganu & Kääb, Andreas
(2010).
SUB-PIXEL PRECISION IMAGE MATCHING FOR DISPLACEMENT MEASUREMENT OF MASS MOVEMENTS USING NORMALISED CROSS-CORRELATION.
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Debella-Gilo, Misganu & Kääb, Andreas
(2010).
Sub-pixel precision algorithms for normalised cross-correlation based image matching of mass movements.
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Haug, Torborg; Kääb, Andreas & Skvarca, Pedro
(2010).
Monitoring ice shelf velocities from repeat MODIS and Landsat data - a method study on the Larsen C ice shelf, Antarctic Peninsula, and application to 10 other ice shelves around Antarctica.
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Haug, Torborg & Kääb, Andreas
(2010).
Evaluation of different image matching methods for deriving glacier displacements.
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Haug, Torborg; Debella-Gilo, Misganu; Karstensen, Jonas & Kääb, Andreas
(2010).
Performance and application of different image matching algortihms for investigating glacier and ice-shelf flow, permafrost creep and landslides.
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Kääb, Andreas; Nuth, Christopher & Casey, Kimberly Ann
(2010).
DEM co-registration.
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Kääb, Andreas; Nuth, Christopher; Moholdt, Geir; Schneevoigt, Nora Jennifer; Sund, Monica & Chapuis, Anne
(2010).
SPIRIT DEM applications over Svalbard.
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Kääb, Andreas
(2010).
Remote sensing of glacier dynamics and volume changes.
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Nuth, Christopher; Schuler, Thomas; Kohler, Jack; Hagen, Jon Ove Methlie & Kääb, Andreas Max
(2010).
Combining elevation changes and mass balance on Kongsvegen and Kronebreen.
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Kääb, Andreas
(2010).
The view from afar. Remote sensing of glaciers and related hazards.
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Haug, Torborg; Kääb, Andreas Max & Skvarca, Pedro
(2009).
Velocity measurements on Larsen C, Antarctic Peninsula, using low resolution optical images.
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Nuth, Christopher; Kääb, Andreas Max; Moholdt, Geir; Kohler, Jack & Hagen, Jon Ove Methlie
(2009).
Increasing volume loss of southern Svalbard glaciers revealed by DEM comparison.
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Kääb, Andreas Max; Debella-Gilo, Misganu; Haug, Torborg & Karstensen, Jonas
(2009).
Measurement of surface displacements on rockglaciers.
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Kääb, Andreas Max; Altena, Bas; Karstensen, Jonas & Narama, Chiyuki
(2009).
Spaceborne remote sensing of glacier mass changes and dynamics.
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Kääb, Andreas Max
(2009).
Mountain glaciers - indicators, resources, hazards.
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Schneevoigt, Nora Jennifer; Moholdt, Geir; Sund, Monica & Kääb, Andreas Max
(2009).
InSAR glacier observation near Ny Ålesund - first results.
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Kääb, Andreas Max
(2009).
Remote sensing of glacier and permafrost-related hazards in mountains.
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Kääb, Andreas Max; Altena, Bas; Karstensen, Jonas; Nuth, Christopher & Narama, Chiyuki
(2009).
Spaceborne remote sensing of glacier mass changes and dynamics.
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Kääb, Andreas Max
(2009).
Remote Sensing of the Cryosphere.
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Kääb, Andreas Max
(2009).
The role, achievements and prospects of remote sensing for observing high-mountain glaciers and related hazards.
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Kääb, Andreas Max
(2009).
Glacier elevation and dynamics from space.
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Kääb, Andreas Max
(2009).
Remote Sensing in Geosciences, in particular Geohazards and Cryosphere.
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Kääb, Andreas Max; Frauenfelder, Regula & Kronholm, Kalle
(2009).
Combined use of optical remote sensing and GIS for landslide mapping: example from Pakistan.
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Frauenfelder, Regula & Kääb, Andreas Max
(2009).
Glacier mapping from multi-temporal optical remote sensing data within the Brahmaputra River Basin.
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Kääb, Andreas Max; Strozzi, T; Delaloye, R; Ambrosi, C & Debella-Gilo, Misganu
(2009).
Comparison and combination of airborne digital photogrammetry, satellite SAR interferometry, GPS and terrestrial surveying for monitoring rock mass movements.
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Kääb, Andreas Max; Frauenfelder, Regula; Hoelzle, M.; Sossna, Iris & Avian, Michael
(2009).
Glacier, glacier lake and permafrost distribution in the Brahmaputra river basin.
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Kääb, Andreas Max
(2009).
Radar and optical remote sensing of landslides.
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Haug, Torborg; Kääb, Andreas Max & Skvarca, Pedro
(2009).
Measuring ice shelf velocity using MODIS images. A test study on Larsen C, Antarctic Peninsula.
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Haug, Torborg; Kääb, Andreas Max & Skvarca, Pedro
(2009).
Velocity Fields on the Larsen C Ice Shelf, Antarctic Peninsula, Using Repeat MODIS and Landsat Data.
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Kääb, Andreas Max; Strozzi, T; Delaloye, R; Ambrosi, C & Debella-Gilo, Misganu
(2009).
Paraglacial rock mass movements in response to glacier retreat. Examples from Aletsch Glacier, Swiss Alps.
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Moholdt, Geir; Nuth, Christopher; Kääb, Andreas Max & Kohler, Jack
(2009).
Combining ICESat altimetry and multi-temporal DEMs to extract elevation change timeseries of Svalbard glaciers.
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Frauenfelder, Regula; Kronholm, Kalle & Kääb, Andreas Max
(2009).
Combined use of optical remote sensing and GIS for landslide mapping.
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Kääb, Andreas Max; Narama, Chiyuki; Duishonakonov, M & Abdrakhmatov, K
(2009).
The 24 July 2008 outburst flood of Zyndan glacier lake, Ysyk-Köl region, Kyrgyzstan.
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Kääb, Andreas Max; Strozzi, T & Werner, C
(2009).
An overview of fast-flowing glaciers on Svalbard from satellite SAR speckle tracking and matching of repeat optical images.
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Kääb, Andreas Max; Strozzi, T; Delaloye, R; Ambrosi, C & Debella-Gilo, Misganu
(2009).
Paraglacial rock mass movements in response to glacier retreat. Examples from Aletsch Glacier, Swiss Alps.
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Narama, Chiyuki; Kääb, Andreas Max; Duishonakonov, M & Abdrakhmatov, K
(2009).
Remote-sensing based analysis of glacier change and glacier lake hazards in the outer ranges of the Tien Shan mountains.
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Zemp, M; Raup, B; Armstrong, RA; Ballagh, L; Roer, I & Haeberli, Wilfried
[Show all 10 contributors for this article]
(2009).
Integration of glacier databases within the Global Terrestrial Network for Glaciers (GTN-G).
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Kääb, Andreas Max
(2009).
The view from afar: Space observations of glaciers and related hazards.
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Schneevoigt, Nora Jennifer; Moholot, Geir; Nuth, Christopher & Kääb, Andreas Max
(2008).
Optical and SAR glacier observation near Ny Ålesund - first results.
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Kääb, Andreas Max
(2008).
Remote sensing of geohazards.
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Kääb, Andreas Max
(2008).
Glacier elevation models from space.
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Kääb, Andreas Max
(2008).
A view from afar: Mountain permafrost hazards and remote sensing.
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Kääb, Andreas Max
(2008).
Glacier elevation models from space.
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Kääb, Andreas Max
(2008).
Glacier and permafrost distribution in the Upper Brahmaputra River Basin.
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Schneevoigt, Nora Jennifer; Moholot, Geir & Kääb, Andreas Max
(2008).
Mapping glacial and periglacial environments with optical and radar data.
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Kääb, Andreas Max & Frauenfelder, Regula
(2008).
Glacier distribution and glacier area changes 1960s-2000 in the Brahmaputra river basin.
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Kääb, Andreas Max & Karstensen, Jonas
(2008).
Glacier volume changes 1970-2006 on Edgeøya, Eastern Svalbard, using ASTER satellite stereo and ICESat GLAS data.
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Kääb, Andreas Max
(2007).
Worldwide glacier changes observed from optical space sensors.
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Kääb, Andreas Max
(2007).
Remote sensing of glacier- and permafrost-related hazards in mountains.
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Kääb, Andreas Max
(2007).
Glacier hazards and disasters in the Russian Caucasus.
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Kääb, Andreas Max
(2007).
Remote sensing of the cryosphere.
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Kääb, Andreas Max
(2007).
Monitoring Glaciers and Related Hazards using the ALOS PRISM Instrument. Approaches, Accuracy, Applications.
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Kääb, Andreas Max
(2007).
Permafrost creep within recently deglaciated glacier forefields. A case study at Muragl glacier, Swiss Alps.
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Kääb, Andreas Max
(2007).
Recent glacier volume changes in Eastern Svalbard using ASTER optical stereo.
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Schneevoigt, Nora Jennifer; Moholot, Geir & Kääb, Andreas Max
(2007).
Remote sensing for mapping glacial and periglacial environments.
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Schneevoigt, Nora Jennifer; Moholot, Geir & Kääb, Andreas Max
(2007).
Remote sensing for mapping glacial and periglacial environments. Examples from geomorphic landforms in the Bavarian Alps and from Norwegian glaciers.
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Kääb, Andreas Max
(2007).
Remote sensing of glacier hazards.
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Kääb, Andreas Max
(2007).
Spaceborne remote sensing of glaciers.
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Wangensteen, Bjørn; Guðmundsson, Águst; Eiken, Trond; Kääb, Andreas Max; Farbrot, Herman & Etzelmuller, Bernd
(2005).
Surface displacements and surface age estimates for creeping slope landforms in Northern Iceland using digital phototgrammetry.
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Etzelmuller, Bernd; Wangensteen, Bjørn; Gudmundsson, A.; Farbrot, Herman; Humlum, Ole & Eiken, Trond
[Show all 7 contributors for this article]
(2004).
Surface displacement, volume changes and Holocene sediment flux rates for active rock glaciers and moving debris bodies on Iceland - examples from the Tröllaskagi Peninsula, northern Iceland, and Seydisfjordu area, eastern Iceland.
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Etzelmuller, Bernd; Heggem, Eva Solbjørg Flo; Sharkhuu, N.; Frauenfelder, R.; Romanovsky, V.E. & Tumentsetseg, S.
[Show all 8 contributors for this article]
(2004).
Permafrost distribution modeling based on ground temperature measurments, DC resistivity tomography and morphometric analyses at the Lake Hövsgöl, northern Mongolia.
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Wangensteen, Bjørn; Guðmundsson, Águst; Eiken, Trond; Kääb, Andreas Max; Farbrot, Herman & Etzelmuller, Bernd
(2004).
Surface displacement, volume change and age estimates for some debris covered glaciers and rock glaciers in northern Iceland using digital photogrammetry.
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Wangensteen, Bjørn; Guðmundsson, Águst; Eiken, Trond; Kääb, Andreas Max; Farbrot, Herman & Etzelmuller, Bernd
(2004).
Surface Displacements and Volume Changes for a Debris Covered Glacier and a Moving Debris Body at the Tröllaskagi Peninsula, Northern Iceland, by the use of Digital Photogrammetry.
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Bergaas, Julie R.; Kääb, Andreas & Strout, James Michael
(2021).
Optical remote sensing and change detection for landslide mapping in a humid climate.
Universitetet i Oslo.
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Altena, Bas; Kääb, Andreas; Leclercq, Paul Willem & Nuth, Christopher
(2018).
Observing change in glacier flow by using optical satellites.
Universitetet i Oslo.
ISSN 1501-7710.
Show summary
In the last couple of years many Earth observation satellites with optical instruments have been set in space. These satellites generate an enormous amount of data and give us a image of different landforms on Earth. The data are available for researchers in Earth Science, though efficiently transforming this imagery data to glaciological information has been a challenge. The work in this dissertation presents modern day techniques to extract glacier velocity information from the satellite imagery. Now it is possible to extract reliable displacement measurements from any satellite independent of its flight path. In this way extracting reliable decadal changes of glacier velocity is finally possible. Moreover, by recent development in technology and clever algorithms developed in this PhD work, extracting short term velocity changes are one of the possibilities. So the timing of sliding of a glacier due to melt water can be observed and located. Lastly, methods for data reduction of big data volumes are exploited to develop a discovery tool that is able to observe glacier dynamics over several large mountain ranges. This research might be the first step towards transforming large data volumes into useful information for worldwide glacier monitoring.
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Nuth, Christopher; Hagen, Jon Ove Methlie; Schuler, Thomas; Kääb, Andreas & Kohler, Jack
(2011).
Quantification and interpretation of glacier elevation changes.
Unipub forlag.