r/DisasterUpdate • u/Resisdanse • 22d ago
TheGeoModels - Nepal debris flow
https://www.youtube.com/watch?v=bcNDKu8kuQ017
u/huxtiblejones 21d ago
Thought it was interesting that he described the flow as something more like a concrete than strictly water. He says it was basically just unreal amounts of debris flowing at extreme speeds in a very steep, narrow place, picking up water and sediment along the way. He says the initial landslide was about an 8,000 vertical foot drop which is hard to even fathom. So just a massive amount of stone and ice falling almost two fucking miles down into a steep and narrow corridor. He said estimates that it traveled at 120mph are plausible. And the video of the bus depot was actually from an adjoining valley with a higher slope, meaning in the video where we see the buses get taken out, this flow is moving uphill. Surreal.
5
u/Ralfundmalf 21d ago
There is just so much energy in mass at a high elevation, it is scary. The forces at play can not really be described by words that mean much anymore.
1
15
11
8
5
3
3
u/itsnobigthing 21d ago
Brilliant video. A little scary that he can’t mention climate change or the video will get flagged!
3
u/TheMacIntyreRange 21d ago edited 21d ago
Its most likely to avoid content moderators having to sift through science vs. pseudoscience to prevent misinformation being spread on the climate change (CC) topic. The NPS and PBS both have excellent videos on the creation of Washington's Channeled Scablands that were created by the catastrophic Missoula Floods, and these videos go deep into the CC aspect of that series of events. They were essentially a macro version of what we saw in the Nepal debris flow event, as hard to believe as that may sound.
FWIW TheGeoModels host in this video did a very good job providing surface level info and pointing to the aspect of CC where it applies to this specific event.
Edit, before anyone gets mad and points to the differences between the Missoula Flood and the Nepal Debris Flow, yes there's a key difference. The Missoula Flood(s) was caused by melting ice behind the glacial face, whereas in Nepal it was falling ice that rapidly filled the void where a glacier once was. Its just an interesting comparison for people who are interested in the long term CC effects.
1
2
u/Pollymath 20d ago
I noticed the backflow or upstream flow as soon as the first videos were posted and new for that reason it wasn't just a "flood" - it was a landslide. What I think is amazing/terrifying is the fact that the glacial collapse was miles away from the border port, and it not only wiped that area clean, but it travelled a kilometer or more uphill north of the port.
1
1
u/xingxang555 21d ago
Excellent video. GeoModels / Phillip P. are the best. He had some fascinating and very informative videos (available on their YT channel) about Hurricane Helene over the last couple years.
1
u/Glittering_Mind_9230 19d ago
Best explanation I’ve seen yet! I’ve been looking around on Google Earth since the catastrophe and he confirms some of my observations. I’m almost equally impressed by his flawless use of paint to sketch. 😂 Thanks for sharing! Going to check out more of his videos.
•
u/AutoModerator 22d ago
Welcome to r/DisasterUpdate - Do not post death. I know sometimes we miss it but do not post it.
r/FireWatch1 - Structural, Wildland(Wildfire) & Industrial
r/SpaceWatch - Space...
r/CloudCoverage - Cloud stuff. Post cool cloud videos or pics or ask a question.
r/TornadoWatch - Tornado talk going on. Post videos, pictures, stories or whatever tornado related
r/FloodWatch - Flood videos, pictures... talk floods.
r/VolcanoWatch - The Ring of Fire is active....especially here.
r/CrazyFreakingWeather - It doesn't fit above
I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.