D-Claw for debris flows and landslides

The D-Claw code has been under development at the USGS for more than 10 years. Originally it was branched off of Clawpack 4.x and evolved somewhat independently of GeoClaw. However, recently it has been substantially rewritten to be compatible with recent versions of Clawpack 5.x and many of the new capabilities introduced in GeoClaw such as Fixed grid monitoring (fgmax) and Fixed grid output (fgout) are now available in D-Claw as well.

Like GeoClaw, D-Claw solves 2-dimensional depth-averaged equations with the fluid depth h and two depth-averaged momenta hu,hv as primary variables, along with new variables for the solid mass fraction and pore pressure. It is based on a model for dense granular flows described in detail in [IversonGeorge2014] and [GeorgeIverson2014].

For more information or to download the D-Claw code, see:

• Documentation

• USGS repository

• Github mirror

• Some D-Claw research applications