Create REMs in QGIS for Flood and River Analysis (Detrended DEMs)
Рет қаралды 5,242
Күн бұрынRelative elevation models (REMs; also referred to as detrended DEMs) are extremely useful for river analysis. And they make really cool visualizations and maps. This tutorial will demonstrate how you can make and display REMs for FREE using QGIS.
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Step-by-step instructions: opensourceoptions.com/blog/cr...
This video was adapted from this article: dancoecarto.com/creating-rems...
@KingSoundings 24 күн бұрын
Great explanation. These channel migration visualizations have wrinkled my brain for a while now. Looking forward to playing around with this.
@kathmanducity 10 ай бұрын
Thank you for a clearly explained workflow.
@geospatialschool 10 ай бұрын
You are welcome!
@saschanatter4 2 ай бұрын
Very nice explained!! That helped me so much with my thesis! Thank you a lot!
@geospatialschool 2 ай бұрын
Glad it helped!
@user-kx3or8sf1p 10 ай бұрын
Thank youb
@pitruchhaya 4 ай бұрын
Does this mean that if i already have river stage at all the cross sections for 1D river reaches, then I can probably use this method and eventually stamp 2D floodplain stage onto 1D? At least I won’t have to worry about clipping the 1D component in the 1D-2D linked model. Thanks for your video, it was really a mighty craic!
@geospatialschool 4 ай бұрын
If you have 1d cross sections and a justice model then you can use that to see if this method will let you move to 2d. You'll just want to check your 1d cross sections against the rem to make sure everything lines up
@TifossiRosso Ай бұрын
Hi! Does this method also work using SAR data? I do not have LiDAR data for my area of interest. Thank you in advance.
@geospatialschool Ай бұрын
It will work with any elevation data, though the results may vary depending on accuracy and resolution
@TifossiRosso Ай бұрын
@@geospatialschool Thanks for the answer!
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