Articles | Volume 74, issue 1
https://doi.org/10.5194/gh-74-59-2019
© Author(s) 2019. This work is distributed under
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the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gh-74-59-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Standard article
| 
15 Feb 2019
Standard article |
| 15 Feb 2019
| 15 Feb 2019
Monitoring the crisis of a rock glacier with repeated UAV surveys
Sebastián Vivero
CORRESPONDING AUTHOR
Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, 1015, Switzerland
Christophe Lambiel
Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, 1015, Switzerland
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Julie Wee, Sebastián Vivero, Tamara Mathys, Coline Mollaret, Christian Hauck, Christophe Lambiel, Jan Beutel, and Wilfried Haeberli
EGUsphere, https://doi.org/10.5194/egusphere-2024-1283, https://doi.org/10.5194/egusphere-2024-1283, 2024
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This study highlights the importance of a multi-method and multidisciplinary approach to better understand the influence of the internal structure of the Gruben glacier forefield-connected rock glacier and adjacent debris-covered glacier on their driving thermo-mechanical processes and associated surface dynamics. We were able to discriminate glacial from periglacial processes as their spatio-temporal patterns of surface dynamics and geophysical signatures are (mostly) different.
Benjamin Aubrey Robson, Shelley MacDonell, Álvaro Ayala, Tobias Bolch, Pål Ringkjøb Nielsen, and Sebastián Vivero
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This work uses satellite and aerial data to study glaciers and rock glacier changes in La Laguna catchment within the semi-arid Andes of Chile, where ice melt is an important factor in river flow. The results show the rate of ice loss of Tapado Glacier has been increasing since the 1950s, which possibly relates to a dryer, warmer climate over the previous decades. Several rock glaciers show high surface velocities and elevation changes between 2012 and 2020, indicating they may be ice-rich.
Sebastián Vivero, Reynald Delaloye, and Christophe Lambiel
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2021-8, https://doi.org/10.5194/esurf-2021-8, 2021
Preprint withdrawn
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We use repeated drone flights to measure the velocities of a rock glacier located in the western Swiss Alps. The results are validated by comparing with simultaneous GPS measurements. Between 2016 and 2019, the rock glacier doubled its overall frontal velocity, from 5 m to more than 10 m per year. These high velocities and the development of a scarp feature indicate a rock glacier destabilisation phase. Finally, this work highlights the use of drones for rock glacier monitoring.
Julie Wee, Sebastián Vivero, Tamara Mathys, Coline Mollaret, Christian Hauck, Christophe Lambiel, Jan Beutel, and Wilfried Haeberli
EGUsphere, https://doi.org/10.5194/egusphere-2024-1283, https://doi.org/10.5194/egusphere-2024-1283, 2024
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This study highlights the importance of a multi-method and multidisciplinary approach to better understand the influence of the internal structure of the Gruben glacier forefield-connected rock glacier and adjacent debris-covered glacier on their driving thermo-mechanical processes and associated surface dynamics. We were able to discriminate glacial from periglacial processes as their spatio-temporal patterns of surface dynamics and geophysical signatures are (mostly) different.
Aldo Bertone, Chloé Barboux, Xavier Bodin, Tobias Bolch, Francesco Brardinoni, Rafael Caduff, Hanne H. Christiansen, Margaret M. Darrow, Reynald Delaloye, Bernd Etzelmüller, Ole Humlum, Christophe Lambiel, Karianne S. Lilleøren, Volkmar Mair, Gabriel Pellegrinon, Line Rouyet, Lucas Ruiz, and Tazio Strozzi
The Cryosphere, 16, 2769–2792, https://doi.org/10.5194/tc-16-2769-2022, https://doi.org/10.5194/tc-16-2769-2022, 2022
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We present the guidelines developed by the IPA Action Group and within the ESA Permafrost CCI project to include InSAR-based kinematic information in rock glacier inventories. Nine operators applied these guidelines to 11 regions worldwide; more than 3600 rock glaciers are classified according to their kinematics. We test and demonstrate the feasibility of applying common rules to produce homogeneous kinematic inventories at global scale, useful for hydrological and climate change purposes.
Benjamin Aubrey Robson, Shelley MacDonell, Álvaro Ayala, Tobias Bolch, Pål Ringkjøb Nielsen, and Sebastián Vivero
The Cryosphere, 16, 647–665, https://doi.org/10.5194/tc-16-647-2022, https://doi.org/10.5194/tc-16-647-2022, 2022
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This work uses satellite and aerial data to study glaciers and rock glacier changes in La Laguna catchment within the semi-arid Andes of Chile, where ice melt is an important factor in river flow. The results show the rate of ice loss of Tapado Glacier has been increasing since the 1950s, which possibly relates to a dryer, warmer climate over the previous decades. Several rock glaciers show high surface velocities and elevation changes between 2012 and 2020, indicating they may be ice-rich.
Cristian Scapozza, Chantal Del Siro, Christophe Lambiel, and Christian Ambrosi
Geogr. Helv., 76, 401–423, https://doi.org/10.5194/gh-76-401-2021, https://doi.org/10.5194/gh-76-401-2021, 2021
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Exposure ages make it possible to determine the time of weathering of a rock surface. They can be determined from rebound values measured with the Schmidt hammer and calibrated on surfaces of known age, defined in this study thanks to historical cartography and two mule tracks built in 300 and 1250 CE, which allowed us to reconstruct glacier fluctuations over the last 3 centuries in Val Scaradra and to define the time of deglaciation and rock glacier development in the Splügenpass region.
Sebastián Vivero, Reynald Delaloye, and Christophe Lambiel
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2021-8, https://doi.org/10.5194/esurf-2021-8, 2021
Preprint withdrawn
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We use repeated drone flights to measure the velocities of a rock glacier located in the western Swiss Alps. The results are validated by comparing with simultaneous GPS measurements. Between 2016 and 2019, the rock glacier doubled its overall frontal velocity, from 5 m to more than 10 m per year. These high velocities and the development of a scarp feature indicate a rock glacier destabilisation phase. Finally, this work highlights the use of drones for rock glacier monitoring.
Antoine Marmy, Jan Rajczak, Reynald Delaloye, Christin Hilbich, Martin Hoelzle, Sven Kotlarski, Christophe Lambiel, Jeannette Noetzli, Marcia Phillips, Nadine Salzmann, Benno Staub, and Christian Hauck
The Cryosphere, 10, 2693–2719, https://doi.org/10.5194/tc-10-2693-2016, https://doi.org/10.5194/tc-10-2693-2016, 2016
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Geogr. Helv., 77, 1–20, https://doi.org/10.5194/gh-77-1-2022, https://doi.org/10.5194/gh-77-1-2022, 2022
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The paper presents the results of recent geoarchaeological studies on the Ticino river alluvial plain. The sedimentological descriptions are combined with archaeological observations and constrained with radiocarbon dating. This approach, together with data from previous research and historical sources, provides an interesting overview of the eveolution of Ticino river morphosedimentary dynamics in relation to human settlements since the Neolithic.
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Exposure ages make it possible to determine the time of weathering of a rock surface. They can be determined from rebound values measured with the Schmidt hammer and calibrated on surfaces of known age, defined in this study thanks to historical cartography and two mule tracks built in 300 and 1250 CE, which allowed us to reconstruct glacier fluctuations over the last 3 centuries in Val Scaradra and to define the time of deglaciation and rock glacier development in the Splügenpass region.
Jonathan Bussard and Elisa Giaccone
Geogr. Helv., 76, 385–399, https://doi.org/10.5194/gh-76-385-2021, https://doi.org/10.5194/gh-76-385-2021, 2021
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In mountain environments, active geomorphological processes have a strong influence on plant diversity because they act as renovators for habitats of pioneer species. In this paper, we propose criteria to assess the ecological value of dynamic mountain geomorphosites. We show that the interest of plant communities and the influence of geomorphological processes on plant communities are fundamental criteria for assessing ecological value in an exhaustive and objective way.
Philip Greenwood, Jan Bauer, and Nikolaus J. Kuhn
Geogr. Helv., 76, 319–333, https://doi.org/10.5194/gh-76-319-2021, https://doi.org/10.5194/gh-76-319-2021, 2021
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Soil erosion by wind and water is a commonly recognized phenomenon on agricultural land. Erosion in forests is studied less and generally considered to be limited because of the soil protection by vegetation. However, trees, when toppled because of old age or wind, loosen a considerable amount of soil when their roots are pulled from the ground. In addition, the holes left in the ground act as collectors for water and concentrated runoff, causing significant soil loss on forested slopes.
Cristian Scapozza, Christian Ambrosi, Massimiliano Cannata, and Tazio Strozzi
Geogr. Helv., 74, 125–139, https://doi.org/10.5194/gh-74-125-2019, https://doi.org/10.5194/gh-74-125-2019, 2019
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A glacial lake outburst flood hazard assessment by satellite Earth observation and numerical modelling was done for the lakes linked to the Thangothang Chhu glacier, Chomolhari area (Bhutan), combining detailed geomorphological mapping, landslide and rock glacier inventories, as well as surface displacements quantified by satellite InSAR. Outburst scenario modelling revealed that only a flood wave can have an impact on the two human settlements located downslope of the glacier.
Philippe Burkhalter, Markus Egli, and Holger Gärtner
Geogr. Helv., 74, 93–103, https://doi.org/10.5194/gh-74-93-2019, https://doi.org/10.5194/gh-74-93-2019, 2019
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A spatiotemporal reconstruction of slope movements on the edge of Lake Lucerne near the municipality of Horw, canton of Lucerne is presented. The reconstruction was realized by analyzing growth reactions of beech (Fagus sylvatica L.) and fir (Abies alba Mill.) trees growing on this slope. Results show that the area has been moving at least since 1948. A significant concentration of events was observed between 1990 and 2000 as well as after 2006.
Mario Kummert and Reynald Delaloye
Geogr. Helv., 73, 357–371, https://doi.org/10.5194/gh-73-357-2018, https://doi.org/10.5194/gh-73-357-2018, 2018
Max Boxleitner, Susan Ivy-Ochs, Dagmar Brandova, Marcus Christl, Markus Egli, and Max Maisch
Geogr. Helv., 73, 241–252, https://doi.org/10.5194/gh-73-241-2018, https://doi.org/10.5194/gh-73-241-2018, 2018
Patrick Becker, Martin Funk, Christian Schlüchter, and Kolumban Hutter
Geogr. Helv., 72, 421–442, https://doi.org/10.5194/gh-72-421-2017, https://doi.org/10.5194/gh-72-421-2017, 2017
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This article studies the ice flow in the Valais region during the last glaciation (Würm) in detail. The numerical modelling shows a discrepancy of the height of the ice cap compared to the geomorphological evidence based on trimlines. However, geomorphological evidence at the Simplon Pass indicating an ice flow from the Rhone valley into the valley of Toce was confirmed. Furthermore it is shown that for this confirmation a sufficient ice thickness is obligatory.
Patrick Becker, Julien Seguinot, Guillaume Jouvet, and Martin Funk
Geogr. Helv., 71, 173–187, https://doi.org/10.5194/gh-71-173-2016, https://doi.org/10.5194/gh-71-173-2016, 2016
Frank Techel, Frédéric Jarry, Georg Kronthaler, Susanna Mitterer, Patrick Nairz, Miha Pavšek, Mauro Valt, and Gian Darms
Geogr. Helv., 71, 147–159, https://doi.org/10.5194/gh-71-147-2016, https://doi.org/10.5194/gh-71-147-2016, 2016
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During the last 45 years, about 100 people lost their lives in avalanches in the European Alps each year. Avalanche fatalities in settlements and on transportation corridors have considerably decreased since the 1970s. In contrast, the number of avalanche fatalities during recreational activities away from avalanche-secured terrain doubled between the 1960s and 1980s and has remained relatively stable since, despite a continuing strong increase in winter backcountry recreational activities.
Rachel Luethi and Marcia Phillips
Geogr. Helv., 71, 121–131, https://doi.org/10.5194/gh-71-121-2016, https://doi.org/10.5194/gh-71-121-2016, 2016
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Long-term borehole temperature monitoring in mountain permafrost environments is challenging under the hostile conditions reigning there. On the basis of data measured in the SLF borehole network we show situations where ground temperature data should be interpreted with caution. A selection of recently observed problems are discussed, and advantages and possible drawbacks of various solutions including data correction, measurement redundancy or alternate instrumentation are presented.
P. Greenwood, M. Hoelzle, and N. J. Kuhn
Geogr. Helv., 70, 311–313, https://doi.org/10.5194/gh-70-311-2015, https://doi.org/10.5194/gh-70-311-2015, 2015
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Editorial introducing the special issue of Geographica Helvetica: Mapping, Measuring and Modeling in Geomorphology.
C. Willi, C. Graf, Y. Deubelbeiss, and M. Keiler
Geogr. Helv., 70, 265–279, https://doi.org/10.5194/gh-70-265-2015, https://doi.org/10.5194/gh-70-265-2015, 2015
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The erosion of and depositions on channel bed surfaces are instrumental to understanding debris flow processes. We present different methods and highlight their pro and cons. Terrestrial and airborne laser scanning, erosion sensors, cross sections and geomorphological mapping are compared. Two of these approaches are tested and applied in a torrent. The results indicate that the methods are associated with variable temporal and spatial resolution as well as data quality and invested effort.
S. Müller and D. Schaub
Geogr. Helv., 70, 193–198, https://doi.org/10.5194/gh-70-193-2015, https://doi.org/10.5194/gh-70-193-2015, 2015
L. Xiao, Y. Hu, P. Greenwood, and N. J. Kuhn
Geogr. Helv., 70, 167–174, https://doi.org/10.5194/gh-70-167-2015, https://doi.org/10.5194/gh-70-167-2015, 2015
C. Scapozza
Geogr. Helv., 70, 135–139, https://doi.org/10.5194/gh-70-135-2015, https://doi.org/10.5194/gh-70-135-2015, 2015
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In the scientific literature, “protalus ramparts” can designate both a nivo-gravitational landform (also called “pronival ramparts”) and a permafrost-related landform. Thanks to a selection of eight major diagnostic criteria defined from observations carried out in the Swiss Alps, it was highlighted that the structure, ice content and creep dynamics of protalus ramparts are the same as many rock glaciers. Protalus rampart were therefore defined simply as a (small) active talus rock glacier.
C. Ambrosi and C. Scapozza
Geogr. Helv., 70, 121–133, https://doi.org/10.5194/gh-70-121-2015, https://doi.org/10.5194/gh-70-121-2015, 2015
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Some examples of 3-D digital mapping for Quaternary geological and geomorphological cartography are presented in this paper. Examples concern in particular the Quaternary geological cartography around the well-know Flims rockslide area (Graubünden), performed in the framework of the GeoCover project launched by the Swiss Geological Survey, and the landslide and glacial/periglacial landform mapping and inventorying in the southern Swiss Alps (Ticino) for assessing the slope tectonic activity.
B. Staub, A. Marmy, C. Hauck, C. Hilbich, and R. Delaloye
Geogr. Helv., 70, 45–62, https://doi.org/10.5194/gh-70-45-2015, https://doi.org/10.5194/gh-70-45-2015, 2015
P. Greenwood, S. Kuonen, W. Fister, and N. J. Kuhn
Geogr. Helv., 70, 63–73, https://doi.org/10.5194/gh-70-63-2015, https://doi.org/10.5194/gh-70-63-2015, 2015
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Alpine and mountain slopes represent important pathways that link high-altitude grazing areas to meadows and rangelands at lower elevations. Given the acute gradients associated with such environments, we hypothesize that terracettes act as efficient runoff conveyance routes that facilitate the movement of runoff and associated material during erosion events. This hypothesis was partially disproved during a series of rainfall/runoff simulations on a well-developed terracette system, however.
M. Stähli, C. Graf, C. Scheidl, C. R. Wyss, and A. Volkwein
Geogr. Helv., 70, 1–9, https://doi.org/10.5194/gh-70-1-2015, https://doi.org/10.5194/gh-70-1-2015, 2015
M. Hoelzle and E. Reynard
Geogr. Helv., 68, 225–226, https://doi.org/10.5194/gh-68-225-2013, https://doi.org/10.5194/gh-68-225-2013, 2013
M. Huss, A. Voinesco, and M. Hoelzle
Geogr. Helv., 68, 227–237, https://doi.org/10.5194/gh-68-227-2013, https://doi.org/10.5194/gh-68-227-2013, 2013
R. Weingartner, B. Schädler, and P. Hänggi
Geogr. Helv., 68, 239–248, https://doi.org/10.5194/gh-68-239-2013, https://doi.org/10.5194/gh-68-239-2013, 2013
P. Michna, W. Eugster, R. V. Hiller, M. J. Zeeman, and H. Wanner
Geogr. Helv., 68, 249–263, https://doi.org/10.5194/gh-68-249-2013, https://doi.org/10.5194/gh-68-249-2013, 2013
S. Schneider, S. Daengeli, C. Hauck, and M. Hoelzle
Geogr. Helv., 68, 265–280, https://doi.org/10.5194/gh-68-265-2013, https://doi.org/10.5194/gh-68-265-2013, 2013
Cited articles
Arenson, L. U., Kääb, A., and O'Sullivan, A.: Detection and Analysis
of Ground Deformation in Permafrost Environments, Permafrost Periglac. Process.,
27, 339–351, https://doi.org/10.1002/ppp.1932, 2016.
Barboux, C., Delaloye, R., and Lambiel, C.: Inventorying slope movements in an
Alpine environment using DInSAR, Earth Surf. Proc. Land., 39, 2087–2099,
https://doi.org/10.1002/esp.3603, 2014.
Barsch, D.: Rockglaciers: indicators for the present and former geoecology in
high mountain environments, Springer-Verlag, Berlin, 1996.
Bodin, X., Krysiecki, J. M., Schoeneich, P., Le Roux, O., Lorier, L., Echelard,
T., Peyron, M., and Walpersdorf, A.: The 2006 Collapse of the Bérard Rock
Glacier (Southern French Alps), Permafrost Periglac. Process., 28, 209–223,
https://doi.org/10.1002/ppp.1887, 2017.
Bodin, X., Thibert, E., Sanchez, O., Rabatel, A., and Jaillet, S.: Multi-Annual
Kinematics of an Active Rock Glacier Quantified from Very High-Resolution DEMs:
An Application-Case in the French Alps, Remote Sens., 10, 1–14, https://doi.org/10.3390/rs10040547, 2018.
Bollmann, E., Girstmair, A., Mitterer, S., Krainer, K., Sailer, R., and
Stötter, J.: A Rock Glacier Activity Index Based on Rock Glacier Thickness
Changes and Displacement Rates Derived From Airborne Laser Scanning, Permafrost
Periglac. Process., 26, 347–359, https://doi.org/10.1002/ppp.1852, 2015.
Buchli, T., Merz, K., Zhou, X., Kinzelbach, W., and Springman, S. M.:
Characterization and Monitoring of the Furggwanghorn Rock Glacier, Turtmann
Valley, Switzerland: Results from 2010 to 2012, Vadose Zone J., 12, 1–15,
https://doi.org/10.2136/vzj2012.0067, 2013.
Carbonneau, P. E. and Dietrich, J. T.: Cost-effective non-metric photogrammetry
from consumer-grade sUAS: implications for direct georeferencing of structure
from motion photogrammetry, Earth Surf. Proc. Land., 42, 473–486, https://doi.org/10.1002/esp.4012, 2016.
Carrivick, J. L., Smith, M. W., and Quincey, D. J.: Structure from Motion in
the Geosciences, John Wiley & Sons, Ltd, Chichester, UK, 2016.
Clapuyt, F., Vanacker, V., Schlunegger, F., and Van Oost, K.: Unravelling earth
flow dynamics with 3-D time series derived from UAV-SfM models, Earth Surf.
Dynam., 5, 791–806, https://doi.org/10.5194/esurf-5-791-2017, 2017.
Daanen, R. P., Grosse, G., Darrow, M. M., Hamilton, T. D., and Jones, B. M.:
Rapid movement of frozen debris-lobes: Implications for permafrost degradation
and slope instability in the south-central Brooks Range, Alaska, Nat. Hazards
Earth Syst. Sci., 12, 1521–1537, https://doi.org/10.5194/nhess-12-1521-2012, 2012.
Dall'Asta, E., Forlani, G., Roncella, R., Santise, M., Diotri, F., and Morra
di Cella, U.: Unmanned Aerial Systems and DSM matching for rock glacier
monitoring, ISPRS J. Photogramm. Remote Sens., 127, 102–114, https://doi.org/10.1016/j.isprsjprs.2016.10.003, 2017.
Delaloye, R., Lambiel, C., and Gärtner-Roer, I.: Overview of rock glacier
kinematics research in the Swiss Alps: seasonal rhythm, interannual variations
and trends over several decades, Geogr. Helvet., 65, 135–145, https://doi.org/10.5194/gh-65-135-2010, 2010.
Delaloye, R., Morard, S., Barboux, C., Abbet, D., Gruber, V., Riedo, M., and
Gachet, S.: Rapidly moving rock glaciers in Mattertal, Jahrestagung der
Schweizerischen Geomorphol. Gesellschaft, in: Mattertal – ein Tal in Bewegung,
Publikation zur Jahrestagung der Schweizerischen Geomorphologischen Gesellschaft,
29 June–1 July 2011, edited by: Graf, C., Eidg. Forschungsanstalt WSL,
St. Niklaus, Birmensdorf, 113–124, 2013.
Deline, P., Gruber, S., Delaloye, R., Fischer, L., Geertsema, M., Giardino, M.,
Hasler, A., Kirkbride, M., Krautblatter, M., Magnin, F., McColl, S., Ravanel,
L., and Schoeneich, P.: Ice Loss and Slope Stability in High-Mountain Regions,
in: Snow- and Ice-Related Hazards, Risks and Disasters, chap. 17, edited by:
Haeberli, W. and Whiteman, C., Elsevier, Amsterdam, 521–561, 2015.
Deluigi, N., Lambiel, C., and Kanevski, M.: Data-driven mapping of the potential
mountain permafrost distribution, Sci. Total Environ., 590–591, 370–380,
https://doi.org/10.1016/j.scitotenv.2017.02.041, 2017.
Fahnestock, M., Scambos, T. A., Moon, T., Gardner, A. S., Haran, T., and Klinger,
M.: Rapid large-area mapping of ice flow using Landsat 8, Remote Sens. Environ.,
185, 84–94, https://doi.org/10.1016/j.rse.2015.11.023, 2016.
Fischer, L., Eisenbeiss, H., Kääb, A., Huggel, C., and Haeberli, W.:
Monitoring topographic changes in a periglacial high-mountain face using
high-resolution DTMs, Monte Rosa East Face, Italian Alps, Permafrost Periglac.
Process., 22, 140–152, https://doi.org/10.1002/ppp.717, 2011.
Fischer, L., Huggel, C., Kääb, A., and Haeberli, W.: Slope failures
and erosion rates on a glacierized high-mountain face under climatic changes,
Earth Surf. Proc. Land., 38, 836–846, https://doi.org/10.1002/esp.3355, 2013.
Gardaz, J.: Distribution of Mountain Permafrost, Fontanesses Basin, Valaisian
Alps, Switzerland, Permafrost Periglac. Process., 8, 101–105,
https://doi.org/10.1002/(SICI)1099-1530(199701)8:1<101::AID-PPP241>3.0.CO;2-X, 1997.
Girardeau-Montaut, D.: Cloud Compare v2.9, available at: http://www.danielgm.net/cc/,
last access: 25 September 2018.
Haeberli, W., Hallet, B., Arenson, L. U., Elconin, R., Humlum, O., Kääb,
A., Kaufmann, V., Ladanyi, B., Matsuoka, N., Springman, S. M., and Mühll,
D. V.: Permafrost creep and rock glacier dynamics, Permafrost Periglac. Process.,
17, 189–214, https://doi.org/10.1002/ppp.561, 2006.
Harris, C., Mühll, D. V., Isaksen, K., Haeberli, W., Sollid, J. L., King,
L., Holmlund, P., Dramis, F., Guglielmin, M., and Palacios, D.: Warming
permafrost in European mountains, Global Planet. Change, 39, 215–225,
https://doi.org/10.1016/j.gloplacha.2003.04.001, 2003.
Harwin, S., Lucieer, A., and Osborn, J.: The impact of the calibration method
on the accuracy of point clouds derived using unmanned aerial vehicle multi-view
stereopsis, Remote Sens., 7, 11933–11953, https://doi.org/10.3390/rs70911933, 2015.
Hendrickx, H., Vivero, S., De Cock, L., De Wit, B., De Maeyer, P., Lambiel, C.,
Delaloye, R., Nyssen, J., and Frankl, A.: The reproducibility of SfM algorithms
to produce detailed Digital Surface Models: the example of PhotoScan applied to
a high-alpine rock glacier, Remote Sens. Lett., 10, 11–20, https://doi.org/10.1080/2150704X.2018.1519641, 2019.
Ikeda, A., Matsuoka, N., and Kääb, A.: Fast deformation of perennially
frozen debris in a warm rock glacier in the Swiss Alps: An effect of liquid
water, J. Geophys. Res.-Earth, 113, 1–12, https://doi.org/10.1029/2007JF000859, 2008.
James, M. R., How, P., and Wynn, P. M.: Pointcatcher software: Analysis of
glacial time-lapse photography and integration with multitemporal digital
elevation models, J. Glaciol., 62, 159–169, https://doi.org/10.1017/jog.2016.27, 2016.
Kääb, A. and Reichmuth, T.: Advance mechanisms of rock glaciers,
Permafrost Periglac. Process., 16, 187–193, https://doi.org/10.1002/ppp.507, 2005.
Kääb, A. and Vollmer, M.: Surface geometry, thickness changes and flow
fields on creeping mountain permafrost: Automatic extraction by digital image
analysis, Permafrost Periglac. Process., 11, 315–326, https://doi.org/10.1002/1099-1530(200012)11:4<315::AID-PPP365>3.0.CO;2-J, 2000.
Kääb, A., Frauenfelder, R., and Roer, I.: On the response of rockglacier
creep to surface temperature increase, Global Planet. Change, 56, 172–187, 2007.
Kenner, R., Phillips, M., Limpach, P., Beutel, J., and Hiller, M.: Monitoring
mass movements using georeferenced time-lapse photography: Ritigraben rock
glacier, western Swiss Alps, Cold Reg. Sci. Technol., 145, 127–134,
https://doi.org/10.1016/j.coldregions.2017.10.018, 2018.
Klauser, F. and Pedrozo, S.: Introduction: Power and space in the drone age,
Geogr. Helvet., 72, 409–410, https://doi.org/10.5194/gh-72-409-2017, 2017.
Kummert, M. and Delaloye, R.: Mapping and quantifying sediment transfer between
the front of rapidly moving rock glaciers and torrential gullies, Geomorphology,
309, 60–76, https://doi.org/10.1016/j.geomorph.2018.02.021, 2018.
Kummert, M., Delaloye, R., and Braillard, L.: Erosion and sediment transfer
processes at the front of rapidly moving rock glaciers: Systematic observations
with automatic cameras in the western Swiss Alps, Permafrost Periglac. Process.,
29, 21–33, https://doi.org/10.1002/ppp.1960, 2018.
Lague, D., Brodu, N., and Leroux, J.: Accurate 3D comparison of complex
topography with terrestrial laser scanner: Application to the Rangitikei canyon (N-Z),
ISPRS J. Photogramm. Remote Sens., 82, 10–26, https://doi.org/10.1016/j.isprsjprs.2013.04.009, 2013.
Lambiel, C. and Pieracci, K.: Permafrost distribution in talus slopes located
within the alpine periglacial belt, Swiss Alps, Permafrost Periglac. Process.,
19, 293–304, https://doi.org/10.1002/ppp.624, 2008.
Lambiel, C., Maillard, B., Kummert, M., and Reynard, E.: Geomorphology of the
Hérens valley (Swiss Alps), J. Maps, 12, 160–172, https://doi.org/10.1080/17445647.2014.999135, 2016.
Lambiel, C., Rüttimann, S., Meyrat, R., and Vivero, S.: Capturing the
crisis of an active rock glacier with UAV survey, in: EGU Gen. Assem.,
23–28 April 2017, Vienna, Austria, 2017.
Micheletti, N., Lane, S. N., and Chandler, J. H.: Application of archival aerial
photogrammetry to quantify climate forcing of alpine landscapes, Photogramm.
Rec., 30, 143–165, https://doi.org/10.1111/phor.12099, 2015a.
Micheletti, N., Lambiel, C., and Lane, S. N.: Investigating decadal-scale
geomorphic dynamics in an alpine mountain setting, J. Geophys. Res.-Earth, 120,
2155–2175, https://doi.org/10.1002/2015JF003656, 2015b.
Micheletti, N., Tonini, M., and Lane, S. N.: Geomorphological activity at a
rock glacier front detected with a 3D density-based clustering algorithm,
Geomorphology, 278, 287–297, https://doi.org/10.1016/j.geomorph.2016.11.016, 2016.
Müller, J., Vieli, A., and Gärtner-Roer, I.: Rock glaciers on the
run – Understanding rock glacier landform evolution and recent changes from
numerical flow modeling, The Cryosphere, 10, 2865–2886, https://doi.org/10.5194/tc-10-2865-2016, 2016.
Nex, F. and Remondino, F.: UAV for 3D mapping applications: A review, Appl.
Geomat., 6, 1–15, https://doi.org/10.1007/s12518-013-0120-x, 2014.
Nolan, M., Larsen, C., and Sturm, M.: Mapping snow depth from manned aircraft
on landscape scales at centimeter resolution using structure-from-motion
photogrammetry, The Cryosphere, 9, 1445–1463, https://doi.org/10.5194/tc-9-1445-2015, 2015.
Passalacqua, P., Belmont, P., Staley, D. M., Simley, J. D., Arrowsmith, J. R.,
Bode, C. A., Crosby, C., DeLong, S. B., Glenn, N. F., Kelly, S. A., Lague, D.,
Sangireddy, H., Schaffrath, K., Tarboton, D. G., Wasklewicz, T., and Wheaton,
J. M.: Analyzing high resolution topography for advancing the understanding of
mass and energy transfer through landscapes: A review, Earth-Sci. Rev., 148,
174–193, https://doi.org/10.1016/j.earscirev.2015.05.012, 2015.
PERMOS: Permafrost in Switzerland 2010/2011 to 2013/2014, edited by: Noetzli,
J., Luethi, R., and Staub, B., Glaciological Report Permafrost No. 12–15,
Cryospheric Commission of the Swiss Academy of Sciences, Zurich, 85 pp., 2016.
Piermattei, L., Carturan, L., De Blasi, F., Tarolli, P., Dalla Fontana, G.,
Vettore, A., and Pfeifer, N.: Suitability of ground-based SfM-MVS for monitoring
glacial and periglacial processes, Earth Surf. Dynam., 4, 425–443, https://doi.org/10.5194/esurf-4-425-2016, 2016.
Pogliotti, P., Guglielmin, M., Cremonese, E., Morra Di Cella, U., Filippa, G.,
Pellet, C., and Hauck, C.: Warming permafrost and active layer variability at
Cime Bianche, Western European Alps, The Cryosphere, 9, 647–661, https://doi.org/10.5194/tc-9-647-2015, 2015.
Ravanel, L., Magnin, F., and Deline, P.: Impacts of the 2003 and 2015 summer
heatwaves on permafrost-affected rock-walls in the Mont Blanc massif, Sci.
Total Environ., 609, 132–143, https://doi.org/10.1016/j.scitotenv.2017.07.055, 2017.
Redpath, T. A. N., Sirguey, P., Fitzsimons, S. J., and Kääb, A.:
Accuracy assessment for mapping glacier flow velocity and detecting flow
dynamics from ASTER satellite imagery: Tasman Glacier, New Zealand, Remote
Sens. Environ., 133, 90–101, https://doi.org/10.1016/j.rse.2013.02.008, 2013.
Roer, I., Haeberli, W., Avian, M., Kaufmann, V., Delaloye, R., Lambiel, C.,
and Kääb, A.: Observations and considerations on destabilizing active
rock glaciers in the European Alps, in: Proceedings of the 9th International
Conference on Permafrost, Fairbanks, 1505–1510, 2008.
Scambos, T. A., Dutkiewicz, M. J., Wilson, J. C., and Bindschadler, R. A.:
Application of image cross-correlation to the measurement of glacier velocity
using satellite image data, Remote Sens. Environ., 42, 177–186, https://doi.org/10.1016/0034-4257(92)90101-O, 1992.
Scapozza, C.: Evidence of paraglacial and paraperiglacial crisis in alpine
sediment transfer since the last glaciation (Ticino, Switzerland), Quaternaire,
27, 139–155, https://doi.org/10.4000/quaternaire.7805, 2016.
Scotti, R., Crosta, G. B., and Villa, A.: Destabilisation of Creeping Permafrost:
The Plator Rock Glacier Case Study (Central Italian Alps), Permafrost Periglac.
Process., 28, 224–236, https://doi.org/10.1002/ppp.1917, 2017.
Smith, M. W., Carrivick, J. L., and Quincey, D. J.: Structure from motion
photogrammetry in physical geography, Prog. Phys. Geogr., 40, 247–275,
https://doi.org/10.1177/0309133315615805, 2016.
Sorg, A., Kääb, A., Roesch, A., Bigler, C., and Stoffel, M.: Contrasting
responses of Central Asian rock glaciers to global warming, Sci. Rep., 5, 8228,
https://doi.org/10.1038/srep08228, 2015.
Soruco, A., Vincent, C., Francou, B., Ribstein, P., Berger, T., Sicart, J.-E.,
Wagnon, P., Arnaud, Y., Favier, V., and Lejeune, Y.: Mass balance of Glaciar
Zongo, Bolivia, between 1956 and 2006, using glaciological, hydrological and
geodetic methods, Ann. Glaciol., 50, 1–8, https://doi.org/10.3189/172756409787769799, 2009.
Swisstopo: swissALTI3D – The high precision digital elevation model of
Switzerland, available at:https://shop.swisstopo.admin.ch/en/products/height_models/alti3D
(last access: 25 September 2017), 2018.
Vivero, S.: Monitoring the crisis of a rock glacier with repeated UAV surveys,
https://doi.org/10.5446/38693, 2018.
Watson, C. S., Quincey, D. J., Smith, M. W., Carrivick, J. L., Rowan, A. V.,
and James, M. R.: Quantifying ice cliff evolution with multi-temporal point
clouds on the debris-covered Khumbu Glacier, Nepal, J. Glaciol., 63, 823–837,
https://doi.org/10.1017/jog.2017.47, 2017.
Westoby, M. J., Brasington, J., Glasser, N. F., Hambrey, M. J., and Reynolds,
J. M.: “Structure-from-Motion” photogrammetry: A low-cost, effective tool for
geoscience applications, Geomorphology, 179, 300–314, https://doi.org/10.1016/j.geomorph.2012.08.021, 2012.
Wirz, V., Gruber, S., Purves, R. S., Beutel, J., Gärtner-Roer, I., Gubler,
S., and Vieli, A.: Short-term velocity variations at three rock glaciers and
their relationship with meteorological conditions, Earth Surf. Dynam., 4,
103–123, https://doi.org/10.5194/esurf-4-103-2016, 2016.
Zhang, Z.: Iterative point matching for registration of free-form curves and
surfaces, Int. J. Comput. Vis., 13, 119–152, https://doi.org/10.1007/BF01427149, 1994.
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