2d topographic scan with sonar

Here, I describe a method for obtaining repeat transects of bed elevation using a sonar, water surface scanner, and automated cart setup (see associated Equipment entry) on the Tilting Bed Flume (see assocated Set-up entry) at the Saint Anthony Falls Laboratory (see associated Facility entry).

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Laboratory experiments simulating the geomorphic response to tectonic uplift

We present the results of an experimental study of topography dynamics under conditions of constant precipitation and uplift rate. The experiment is designed to develop a complete drainage network by the growth and propagation of erosion instabilities in response to tectonic perturbations. The quantitative analysis of topographic evolution is made possible by using telemetric lasers that perform elevation measurements at an excellent level of precision.

Workflow for 3D topography using structure-from-motion in Agisoft

The following workflow describes a method for producing 3D image-overlain digital elevation models from photographic imagery using Agisoft PhotoScan Professional (academic license $550 USD from Specifically written for delta experiments, but can be applied elsewhere.