Lake identified as glacier in Russia

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Lake identified as glacier in Russia #47

Open willkochtitzky opened 7 months ago

willkochtitzky commented 7 months ago

RGI version RGI v7.0

Describe the issue RGI2000-v7.0-G-09-00911 glacier is a lake, this is very clear in satellite imagery GLIMS ID is: G097531E79788N

Expected outcome Delete polygon from GLIMS/RGI

Screenshots Attached

Suggested solution Delete polygon from GLIMS/RGI

Screenshot 2024-02-14 at 4 05 45 PM Screenshot 2024-02-14 160627

bruceraup commented 6 months ago

What is the date of the image above? The Mapbox imagery for this area in the GLIMS Glacier Viewer (https://www.glims.org/maps/glims) shows something that could be snow or ice, but I don't know the date of that image either. Maybe it was ice 22 years ago?

willkochtitzky commented 6 months ago

Hi Bruce, it is possible by highly unlikely. I saw that image too with ice in it and it has all the tell tale signs of lake ice if you look more closely. If you need me to, I would be happy to dig more on this, perhaps seeing that a DEM is flat here would be persuasive? I am convinced this is a lake and should be removed from GLIMS.

fmaussion commented 6 months ago

It's too late for the RGI - but GLIMS could delete it yes, for future versions...

willkochtitzky commented 6 months ago

Here is another one in Arctic Canada South glims_id: G286394E71049N rgi_id: RGI2000-v7.0-G-04-02850 Screenshot 2024-03-14 at 8 34 10 PM

willkochtitzky commented 5 months ago

Here is another one in Arctic Canada South: RGI: RGI2000-v7.0-G-04-10772 GLIMS: G294758E64454N

Shown on satellite image from 2000

And fro

m ESRI world imagery: