A DHC-6 Twin Otter from #swisstopo, Switzerland's national mapping agency, is currently flying a mapping pattern above the large glacier collapse in #Blatten. This is part of the rapid mapping response for the event. www.rapidmapping.admin.ch/index_en.html (via globe.adsbexchange.com) - ThreadSky

stim3on.bsky.social • 18 days ago

A DHC-6 Twin Otter from #swisstopo, Switzerland's national mapping agency, is currently flying a mapping pattern above the large glacier collapse in #Blatten.
This is part of the rapid mapping response for the event.
https://www.rapidmapping.admin.ch/index_en.html

(via https://globe.adsbexchange.com)

Comments

spacefromspace.com•18 days ago

Thanks for the heads up! Will be sure the @soarearth.bsky.social helps provide easy access to this once it's online.

stim3on.bsky.social•18 days ago

That will be a good tool to visualize these images.
The orthorectified images will be posted here:
https://www.rapidmapping.admin.ch/index_en.html

If they publish the oblique single images as well, I will be creating a photogrammetry reconstruction of the area.

spacefromspace.com•18 days ago

Thanks! We've got the images from the 19th up and will be ready to push the new imagery once it comes through https://soar.earth/maps/134700

Looking forward to seeing your photogrammetry of the area too.

spacefromspace.com•17 days ago

They just updated the WMS with the new imagery: https://soar.earth/maps/134702?basemap=Satellite

stim3on.bsky.social•17 days ago

Can you make a comparison to the "SWISSIMAGE Hintergrund" layer from the same WMS server? That's the high resolution Orthoimage layer from before the event.
https://www.geo.admin.ch/de/wms-verfuegbare-dienste-und-daten

spacefromspace.com•17 days ago

Yeah, if you go to https://soar.earth/discover and select the imagery from the 19th and hit the 'pin' icon, and then go to the imagery from the 30th you can use the transparency slider to compare the two. (or vice versa) I hope this helps!

jlsi.bsky.social•16 days ago

https://map.geo.admin.ch/#/map?lang=en&center=2629427.56,1140944.74&z=6.665&topic=ech&compareRatio=0.459&layers=WMS%7Chttps://wms.geo.admin.ch/?%7Cch.swisstopo.rapidmapping.rgb/2025-007-BLATTEN&bgLayer=ch.swisstopo.swissimage

stim3on.bsky.social•18 days ago

This flight will help to quantify the extent and volume of the collapsed material to help with coordinating disaster response efforts. I assume the collected elevation data will be used to assess how the large newly forming lake from blocked Lonza river will grow and what danger it poses downstream.

stim3on.bsky.social•18 days ago

After a 2.5h flight, the plane just landed back at Dübendorf air base near Zurich.
As soon as the Swiss mapping agency will make their data available, I'll follow up with an analysis. #Blatten

Flight track via: https://globe.adsbexchange.com/?icao=4b7f78&lat=46.488&lon=7.784&zoom=10.6&showTrace=2025-05-30

hydrology.nl•17 days ago

Now we want the data.

stim3on.bsky.social•17 days ago

The oblique imagery has been published, my PC is currently crunching them into a DEM and Orthomosaic.
More updates soon.

hydrology.nl•17 days ago

Where? LAZ/LAS files? Happy crunching!

hydrology.nl•17 days ago

Looks like they are pictures, not elevation data.

stim3on.bsky.social•17 days ago

Just a bunch of DSLR images for now, posted on the page I shared above: https://www.rapidmapping.admin.ch/index_en.html

I assume they will post an Orthoimage from their dedicated mapping camera sooner or later. No idea if they also have a LIDAR on board, but I would assume so.

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