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#glacial

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Public
💧🌏 Greg Cocks

Glacial Lake Mapping Using Remote Sensing Geo-Foundation Model
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doi.org/10.1016/j.jag.2025.104 <-- shared paper
--
HIGHLIGHTS:
• Proposed U-ViT model based on Prithvi GFM for multi-sensor glacial lake mapping.
• Achieved an F1 score of 0.894 on Sentinel-1&2, surpassing CNNs scoring below 0.8.
• Maintains strong performance with 50% less training data, proving efficiency.
• Excels in detecting small lakes (<0.01km²) and handling clouds and complex terrains..."
#GIS #spatial #mapping #glaciallake #GeospatialFoundationModel #satellite #Sentinel #GaoFen #remotesensing #earthobservation #model #modeling #climatechange #glacial #glacier #melt #melting #UViT #deepleanring #AI #framework #performance #metrics #opensource

phot - glacier with glacial lake, Karakoram mountain range
Public *
💧🌏 Greg Cocks

Glacier Melt Intensifying Freshwater Loss And Accelerating Sea-Level Rise
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esa.int/Applications/Observing <-- shared technical article
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doi.org/10.1038/s41586-024-085 <-- shared paper
--
#GIS #spatial #mapping #GlacierMassBalanceIntercomparison #glacial #glacier #global #cryosphere #regional #freshwater #water #resources #waterresources #watersecurity #sealevel #sealevelrise #SLR #rate #change #spatialanalysis #spatiotemporal #ice #snow #loss #massloss #greenland #antarctic #icesheet #anthropogenic #climatechange #melt #melting #risk #hazard #geohazard #geology #engineeringgeology #marine #terrestrial #ecosystems #watercycle #masschange #insitu #remotesensing #local #observation #model #modeling #projection

map and charts - Global glacier mass changes from 2000 to 2023
charts - Annual and cumulative glacier mass change from 2000 to 2023
satellite image - Chugach Mountains, Alaska - Glaciers in the Chugach Mountains of Alaska. This image, captured by the Copernicus Sentinel-2 mission on 6 October 2017, shows the melting Scott (left), Sheridan (middle) and Childs (right) glaciers feeding lakes and rivers in their forefields.
photo - Golubin Glacier, Kyrgyzstan, 2012
Public
💧🌏 Greg Cocks

Himalayan Snow Lines On The Rise
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earthobservatory.nasa.gov/imag <-- shared NASA technical article
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icimod.org/press-release/snow- <-- shared technical article on Himalaya snow persistence changes
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#GIS #spatial #mapping #Nepal #India #Himalayas #Himalayan #mountains #climatechange #snowpersistence #remotesensing #earthobservation #glacier #glacial #melting #MountEverest #water #hydrology #cryology #snow #ice #waterresources #watersecurity #waterresources #fire #risk #hazard #OLI2 #Landsat #meteorology #weather #annual #precipitation #monsoon #sublimation #temperature #wind #humidity #extremeweather #wildfire #humanimpacts #snowline #newnormal #agriculture #foodsecurity #drought

map - snow anomaly, Nov. '23 to Apr. '24, in and around Nepal / Himalayas
photo - Imja Glacier, Himalayas, Nepal
Landsat image - snowline around Mt Everest - Jan. 2022
Landsat image - snowline around Mt Everest - Jan. 2025
Public *
💧🌏 Greg Cocks

Study Warns Of Glacial Outburst [GLOF] Risks From Hydropower Projects In The Himalayas, Caution Comes After Nod To Resume Testa III [Hydroelectric Project, India]
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timesofindia.indiatimes.com/in <-- shared media article
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doi.org/10.1126/science.ads265 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #GLOF #Sikkim #Himalayas #India #climatechange #flood #flooding #risk #hazard #hydroelectric #HEP #energy #TestaIII #testa #dam #failure #engineeringgeology #engineering #construction #multihazard #melting #glacier #glacial #climatechange #weather #lowpressuresystem #planning #glaciallakes #lakes #water #hydrology #naturaldisaster #Lhonak #downstream #elevation #steepness #slope #geometry #infrastructure #publicsafety #lateral #moraine #sedimentation #cost #economics #remotesensing #model #modeling #imagery #outburstflood #overtopping #hydropower #vulnerable #humanimpact #policy #riskmanagement #warning #rainfall #precipitation

maps and charts - summary of damage assessment
maps and photos - Overview of the 3-4 October 2023 GLOF cascade from South Lhonak Lake, India
photos - Field evidence of sediment aggradation
photo - Teesta III hydroelectric dam soon after failure
Public
💧🌏 Greg Cocks

The Planet's Melting Glaciers Are Releasing A Treasure Trove Of Ancient Artifacts
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cbc.ca/radio/quirks/the-planet <-- shared media article / radio audio
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hachettebookgroup.com/titles/l <-- shared link to book
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secretsoftheice.com/ <-- link to web site, Secrets of the Ice - The Archaeology of Glaciers and Ice Patches
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youtu.be/9bpGsHWckCA?si=FE66aJ <-- Secrets of the Ice overview video
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[this post should not be considered an endorsement of this book]
#GIS #spatial #mapping #archaeology #hunting #artifacts #melting #climatechange #glacial #ice #snow #otzi #iceman #warming #icepatcharcheology #atlatl #perennialice #ancient #huntergatherer #prehistoric #cultures #glacialarchaeology #arrow #tools #artefacts

photo - The mummy of an iceman named Otzi, discovered in 1991. Otzi emerged from a melting glacier after over 5000 years of being entombed in ice. (Andrea Solero/AFP via Getty Images)
photo - A 1000-year-old arrow found melting out of an ice patch in Norway's Jotunheimen Mountains. (Secrets of the Ice)
photo - A 1,300 year old wood plank ski found at the Digervarden Ice Patch in Norway. The ski was complete, including bindings made out of twisted birch and a leather strap. (Aud Hole/secretsoftheice.com)
photo - An antler projectile point recovered from an ice patch in Lake Clark National Park and Preserve. (Photo provided by National Park Service)
Public *
💧🌏 Greg Cocks

Glacial Lake Floods - A Growing, Unpredictable Climate Risk
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phys.org/news/2023-10-glacial- <-- shared technical article
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doi.org/10.1038/s41467-023-360 <-- shared paper
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nature.com/articles/s43017-024 <-- shared paper
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#GIS #spatial #mapping #spatialanalysis #climatechange #spatiotemporal #glaciallakeoutburstflood #GLOF #risk #hazard #water #hydrology #flood #flooding #risk #hazard #mitigation #publicsafety #global #river #melting #dam #ice #naturaldisaster #naturalhazard #breach #highmountain #Asia #Pakistan #China #Nepal #population #vulnerability #glacier #glacial #loss #infrastructure #loss #cost #death #injury #model #modeling #Alaska #Asia #NewZealand #Iceland #model #modeling

schematic - Methodology for quantifying glacial lake changes and impacts
graphics - Future formation and growth of glacial lakes and GLOF hazard
graphics and photos - The triggers and mechanisms of GLOFs
maps and charts - Global and regional changes in glacial lake area
Public
Jan Ekholm

The web version of Mastodon is really awfully slow. Right now typing this it takes a second or two before the characters are shown in the textbox. Clicking the Notifications or Home link freezes everything for 5-10 seconds before things slowly load. I guess this is Javascript's fault too. We should never have allowed our tools to become web based. But few tools are as laggy as Mastodon though.

#mastodon#glacial#laggy
Public
Rob Larter

The fast-eroding cliffs at #Happisburgh, Norfolk exhibit splendid exposures of a "tripartite" (like neapolitan ice cream) Quaternary #geological succession - massive brown/grey #glacial till at the base, overlain by dark, laminated pro-glacial lake muds, then by shallow marine sands.
Two photos show infilled channels in the upper surface of the till, and one shows where the upper two units have been eroded back, exposing the upper surface of the half million year old Happisburgh Till Member.
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