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3D polygons for landform reconstruction

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08-04-2023 04:13 AM
GrahamDriver
Occasional Contributor

Hello, 

I have a DTM of a glacier and it's surrounding terrain and I'm trying to reconstruct the past glacier volume and size. Is there a way I can create a 3D polygon that sits flush to the bottom of the glacier (the DTM) and slopes so I can use it to estimate mass and volume loss? 

I'm new to the 3D side of things with ArcPro and was wondering if this could be done?

Here's a terrible diagram showing what I am trying to get at...

GrahamDriver_1-1691147439358.png

 

 

1 Reply
David_McRitchie
Esri Contributor

Hey Graham I would recommend checking the following page as it lists some useful geoprocessing tools that could be used for this workflow.

 

I think drawing a large polygon over your DTM layer, assigning a Z value to this so that it sits ontop then running the Surface Volume tool should achieve this.

 

Hope that helps!

David

Esri UK -Technical Support Analyst