#arcticdem — Public Fediverse posts

Satellite data map reveals 33 subglacial lakes beneath the Canadian Arctic

Researchers have created the first map of a network of #subglacial #lakes in the Canadian #Arctic showing 33 bodies of water under glaciers. Using a decade of #ArcticDEM satellite data of Earth's surface height, a team of researchers including the University of Waterloo has developed a method that allowed them to track the draining and filling of active subglacial lakes in unprecedented detail. The team's paper is published in The Cryosphere.

https://phys.org/news/2026-04-satellite-reveals-subglacial-lakes-beneath.html

#Cryophere
#RemoteSensing

Rapid Mass Movements Triggered By An Atmospheric River In Disko Island, West Greenland
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https://doi.org/10.1002/esp.70201 <-- shared paper, 2023 event(s)
--
https://doi.org/10.1007/s10346-022-01922-7 <-- shared paper, 2021 event(s)
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https://www.polarresearch.at/the-great-landslide-of-assapaat/ <-- shared technical article
--
#landslide #massmovement #thawing #permafrost #extremewweather #cryosphere #Qeqertarsuaq #ArcticDEM #DiskoIsland #Greenland #ERA5 #CARRA #fluvial #pluvial #precipitation #rainfall #snow #ice #glacier #glacial #temperature #slushflow #GIS #spatial #mapping #geomorphology #elevation #slope #atmosphericriver #climate #weather #snowmelt #island #coast #coastal #damage #humanimpacts #infrastructure #arctic #monitoring #geohazard #risk #hazard #engineeringgeology #polar #change #remotesensing #spatialanalysis #spatiotemporal #earthobservation #debrisflow #remoteareas
#GreenlandEcosystemMonitoring | @europeanspaceagency | #CopernicusECMWF #Copernicus

Rapid Mass Movements Triggered By An Atmospheric River In Disko Island, West Greenland
--
https://doi.org/10.1002/esp.70201 <-- shared paper, 2023 event(s)
--
https://doi.org/10.1007/s10346-022-01922-7 <-- shared paper, 2021 event(s)
--
https://www.polarresearch.at/the-great-landslide-of-assapaat/ <-- shared technical article
--
#landslide #massmovement #thawing #permafrost #extremewweather #cryosphere #Qeqertarsuaq #ArcticDEM #DiskoIsland #Greenland #ERA5 #CARRA #fluvial #pluvial #precipitation #rainfall #snow #ice #glacier #glacial #temperature #slushflow #GIS #spatial #mapping #geomorphology #elevation #slope #atmosphericriver #climate #weather #snowmelt #island #coast #coastal #damage #humanimpacts #infrastructure #arctic #monitoring #geohazard #risk #hazard #engineeringgeology #polar #change #remotesensing #spatialanalysis #spatiotemporal #earthobservation #debrisflow #remoteareas
#GreenlandEcosystemMonitoring | @europeanspaceagency | #CopernicusECMWF #Copernicus

Rapid Mass Movements Triggered By An Atmospheric River In Disko Island, West Greenland
--
https://doi.org/10.1002/esp.70201 <-- shared paper, 2023 event(s)
--
https://doi.org/10.1007/s10346-022-01922-7 <-- shared paper, 2021 event(s)
--
https://www.polarresearch.at/the-great-landslide-of-assapaat/ <-- shared technical article
--
#landslide #massmovement #thawing #permafrost #extremewweather #cryosphere #Qeqertarsuaq #ArcticDEM #DiskoIsland #Greenland #ERA5 #CARRA #fluvial #pluvial #precipitation #rainfall #snow #ice #glacier #glacial #temperature #slushflow #GIS #spatial #mapping #geomorphology #elevation #slope #atmosphericriver #climate #weather #snowmelt #island #coast #coastal #damage #humanimpacts #infrastructure #arctic #monitoring #geohazard #risk #hazard #engineeringgeology #polar #change #remotesensing #spatialanalysis #spatiotemporal #earthobservation #debrisflow #remoteareas
#GreenlandEcosystemMonitoring | @europeanspaceagency | #CopernicusECMWF #Copernicus

Rapid Mass Movements Triggered By An Atmospheric River In Disko Island, West Greenland
--
https://doi.org/10.1002/esp.70201 <-- shared paper, 2023 event(s)
--
https://doi.org/10.1007/s10346-022-01922-7 <-- shared paper, 2021 event(s)
--
https://www.polarresearch.at/the-great-landslide-of-assapaat/ <-- shared technical article
--
#landslide #massmovement #thawing #permafrost #extremewweather #cryosphere #Qeqertarsuaq #ArcticDEM #DiskoIsland #Greenland #ERA5 #CARRA #fluvial #pluvial #precipitation #rainfall #snow #ice #glacier #glacial #temperature #slushflow #GIS #spatial #mapping #geomorphology #elevation #slope #atmosphericriver #climate #weather #snowmelt #island #coast #coastal #damage #humanimpacts #infrastructure #arctic #monitoring #geohazard #risk #hazard #engineeringgeology #polar #change #remotesensing #spatialanalysis #spatiotemporal #earthobservation #debrisflow #remoteareas
#GreenlandEcosystemMonitoring | @europeanspaceagency | #CopernicusECMWF #Copernicus

Rapid Mass Movements Triggered By An Atmospheric River In Disko Island, West Greenland
--
https://doi.org/10.1002/esp.70201 <-- shared paper, 2023 event(s)
--
https://doi.org/10.1007/s10346-022-01922-7 <-- shared paper, 2021 event(s)
--
https://www.polarresearch.at/the-great-landslide-of-assapaat/ <-- shared technical article
--
#landslide #massmovement #thawing #permafrost #extremewweather #cryosphere #Qeqertarsuaq #ArcticDEM #DiskoIsland #Greenland #ERA5 #CARRA #fluvial #pluvial #precipitation #rainfall #snow #ice #glacier #glacial #temperature #slushflow #GIS #spatial #mapping #geomorphology #elevation #slope #atmosphericriver #climate #weather #snowmelt #island #coast #coastal #damage #humanimpacts #infrastructure #arctic #monitoring #geohazard #risk #hazard #engineeringgeology #polar #change #remotesensing #spatialanalysis #spatiotemporal #earthobservation #debrisflow #remoteareas
#GreenlandEcosystemMonitoring | @europeanspaceagency | #CopernicusECMWF #Copernicus

More [Canadian] High-Resolution Lidar [HRDEM] And Elevation Data Now Available
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https://natural-resources.canada.ca/science-data/science-research/geomatics/more-high-resolution-lidar-elevation-data-now-available <-- shared technical press release
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“... In this first article, highlights include:
• HRDEM & HRDEM Mosaic - over 709,000 km² of new LiDAR-derived elevation data added since May 2024, increasing coverage by 54%. This product now covers 244 of Canada’s 250 largest cities, and over 95% of the population.
• Northern HRDEM data - fully updated using ArcticDEM v4.1, improving quality for the entire Canadian Arctic.
• Automatically Extracted Buildings - Added 61 new projects and over 2.58 million building footprints, bringing the total to over 13.6 million.
• LiDAR Point Clouds - Expanded by over 200,000 km2, now totalling close to 364,000 km²…”
#GIS #spatial #mapping #Canada #HRDEM #mosaic #LiDAR #elevation #NationalElevationDataStrategy #pointcloud #ArcticDEM #building #footprints #geographic #coverage #progress #opendata #Canadian #arctic #remotesensing #earthobservation #NaturalResourcesCanada

New #DigitalElevationModel data shows Tintina faultine in northern Canada is more geologically active than previously thought and could be due for a major quake #earthquakes https://gogeomatics.ca/canadian-geospatial-digest-for-august-4-2025/ #ArcticDEM #LidarDem

Just heard on #Cryolist that the Polar Geospatial center at U. of Minnesota is losing their funding. These guys have a huge range of data products including super high resolution digital elevation models of both Arctic and Antarctica.

(#ArcticDEM + #REMA )

This is just naked vandalism.

There goes the Polar Geospatial Center too. Goodness only knows what this means for #ArcticDEM + #REMA? www.pgc.umn.edu/news/suspend...

I think it's a really nice example of how you can combine very diverse datasets, which at first might not seem to have much to do with each other, to get a deep understanding of a key process. First, @agrinsted used a published database of crevasses based on a satellite DEM over the Arctic (#ArcticDEM), combined this with temperatures from the new very high resolution regional #Climate reanalysis (#CARRA), plus ice thickness data from #BedMachine + #IceVelocity data from many many #satellites