Youwei Wang

The meandering planform of the Purus River (a tributary if the Amazon), shown as white wiggles on a black background. The width of the river and the size of the meanders are increasing downstream (top to bottom, left to right).

What if you laid out all the meanders of a river along a straight line, so that you can break the river into straight-ish segments and fill arbitrary spaces? This is the Purus River in Brazil; you can see how it is getting wider and the meanders are getting larger in the downstream direction

Landscapes Live Landscapes Live is a weekly online seminar series freely accessible to the international scientific community interested in various aspects of geomorphology. Our talks take place on Zoom every Thursda...

Join us tomorrow Thu. May 8 at 16:00 CEST for a talk by Jaap Nienhuis @changing-shores.bsky.social :

Global Delta Morphodynamics: why and how?

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www.landscapeslive.org

🐱New Paper Alert: Some Work on Cat and Geomorphology🐱

Bridging Gaps in Satellite Observations of River and Delta Landscapes Using Image Warping, by Youwei Wang, Yuan Li, and Ajay Limaye (Water Resources Research, 2025).

OA paper: doi.org/10.1029/2024...

Quick overview: AGU 2024 poster attached.

YouTube video by Landscapes Live Sinead Lyster: LL 24.04.25

The talk by @sineadlyster.bsky.social is uploaded to youtube!

The impact of vegetation on delta landscapes and stratigraphy: Insights from physical experiments

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youtu.be/1xGKVL-2HMc

A series of five satellite images showcasing diverse landscapes: an island with turquoise waters, a snowy terrain, mountainous regions with winding roads, colorful lakes, and a dry, arid area with circular features. More importantly, they spell out DAVID with their landscape images.

Psst…You want to know about the NASA website that spells out your name in Landsat imagery. 🧪

landsat.gsfc.nasa.gov/apps/YourNam...

Landscapes Live Landscapes Live is a weekly online seminar series freely accessible to the international scientific community interested in various aspects of geomorphology. Our talks take place on Zoom every Thursda...

This week's LL seminar will be by @jakegearon.bsky.social :
"How River Avulsions Work"
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Thursday March 20th, Berlin@16, London@15, Rio@12, NYC@11, LA@8
www.landscapeslive.org

Landscapes Live Landscapes Live is a weekly online seminar series freely accessible to the international scientific community interested in various aspects of geomorphology. Our talks take place on Zoom every Thursda...

LL Season opener with @paul-bierman.bsky.social this Thursday March 13th!

"A landscape under the ice: Camp Century, Greenland"
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ℹ️🔗 www.landscapeslive.org

20:30 Mumbai
16:00 Paris
15:00 London
12:00 Rio
11:00 NYC
08:00 LA

Landscapes Live Landscapes Live is a weekly online seminar series freely accessible to the international scientific community interested in various aspects of geomorphology. Our talks take place on Zoom every Thursda...

Hello Bluesky! 🦋🏞️
We are organizing weekly seminars for scientists to present their research in and around geomorphology.
Affiliated with @eurogeosciences.bsky.social GM
More information on our website: www.landscapeslive.org

Part of a computer screenshot. Shows a map of topography that is output from a landscape evolution model, with a highly dissected landscape in this case

Screenshot showing Python code and the heading, "Using the Model" at the top

Landscape evolution modeling with Landlab in my 300-level geomorph class this week. I like to add a heavy dose of fluvial erosion at the end so it turns into a Loess Plateau/Loess Canyons of Nebraska kind of landscape. I can't say enough good things about Landlab and the people who developed it

Two meanders of the Ural River, with green vegetation on the point bars. The trees seem to be larger and older on the older parts of the bars. Scroll patterens are fairly well defined by variability in the vegetation. Screenshot from Apple Maps.

Two meanders created using the 'meanderpy' and 'meandergraph' Python packages, with point bars color coded by age (green = older, yellow = younger).

A couple of meanders on the Ural River, Kazakhstan and similar geometries + age distribution on the point bars in a simple model of #meandering 🧪⚒️

Meanders as wrinkles in time. Every time step in the animation is a 3D-printable object 🧪⚒️

Relative elevation model of Powder River near Broadus, Montana. So fun to see the floodplain features pop with a bit of color!

Thanks for the encouragement!

I would love to be added. Thank you!

Using reconstructed images, we create synthetic stratigraphy for the Ucayali River based on estimated aggradation and channel preservation rates. Though not fully realistic, it might be helpful for comparing with field data. Spot the two 5m-tall (unrealistic for sure) geologists for scale? :)

Image warping offers powerful solutions for reconstructing landscape evolution, even with incomplete satellite data. Check out these examples: from simple head-turning motions in cats to detailed reconstructions of the Ucayali River and Wax Lake Delta, all using just two input images!