Tag: Canada
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Multitemporal Terrestrial Laser Scanning Point Clouds for Thaw Subsidence Observation
New paper on “Multitemporal Terrestrial Laser Scanning Point Clouds for Thaw Subsidence Observation at Arctic Permafrost Monitoring Sites” The paper investigates different methods for quantifying thaw subsidence using terrestrial laser scanning (TLS) point clouds. Thaw subsidence is a slow (mm‐cm per year) vertical displacement of the ground surface common in ice‐rich permafrost‐underlain landscapes. It is…
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PermaSAR project concluded with publication of final report
With the publication of the final report, the PermaSAR project is concluded. In the blink of an eye regarding timescales of permafrost monitoring, research within the project period covered diverse methods and analyses around the topic of permafrost and related thaw subsidence in Arctic tundra landscapes. The report (in German) provides all details on the…
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Estimating tree height from TanDEM-X data at the northwestern Canadian treeline
A new paper on tree height estimation from TanDEM-X data has just been published in Remote Sensing of Environment. The article finds that tree height can be predicted using TanDEM-X metrics (backscatter, bistatic coherence, and interferometric height) in the sparse forest patches of the Arctic treeline zone at the transition from forest to tundra. Taking…
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Full publication of multitemporal multisensor dataset from an Arctic permafrost research site
The multisensor datasets acquired in the three field campaigns of the PermaSAR project have recently been published on the Open Access data library PANGAEA: Anders, K., Antonova, S., Beck, I., Boike, J., Höfle, B., Langer, M., Marsh, P., Marx, S., (2018): Multisensor ground-based measurements of the permafrost thaw subsidence in the Trail Valley Creek, NWT,…
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Third Arctic Expedition to Trail Valley
The third arctic expedition to Trail Valley, located about 50 km north of Inuvik, NWT, Canada, concludes the field work within the PermaSAR project. Sabrina Marx, Katharina Anders (both: LiDAR Research Group, Heidelberg University) and Julia Boike (Alfred Wegener Institute, Potsdam) stayed a week in the research camp. We were not only able to acquire…
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Report on Trail Valley Creek Research Station
The Tusaayaksat Magazine reports on the research activities at the Trail Valley Creek Research Station, Canada, where members of the LiDAR research group (Inga Beck, Sabrina Marx & Bernhard Höfle) captured in-situ data within the PermaSAR research project last summer: “Climate change research in our own backyard“, p. 58-63.
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Second expedition in the Mackenzie Delta
Mid of August we started for our second field trip in the Canadian Arctic. This time the team consisted of Inga Beck, Sabrina Marx and Detlef May. As Sabrina already joined the trip in June, many things – such as customs, security etc. worked much easier than in June. We only had very little time…
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First Arctic Expedition for 3D Earth Observation of Permafrost (Mackenzie Delta, Canada) within our PermaSAR Project
In June 2015 the LiDAR Research Group (LRG), Heidelberg University, performed a joint expedition with the Alfred-Wegener Institute (AWI). This was our first field expedition within the PermaSAR research project, which is funded by the BMWi / German Aerospace Center (DLR) from 2015 to 2018. The project PermaSAR aims at developing a novel method for…