ASPECT Newsletter #88

Hello everyone!

       This is ASPECT newsletter #88.

It automatically reports recently merged features and discussions about the ASPECT mantle convection code.

Below you find a list of recently proposed or merged features:

#3228: Improve mesh ref thermal density gradient error message (proposed by MFraters)
#3225: fix initialize() call in compositing material (proposed by tjhei; merged)
#3224: Bilinear in 3d (proposed by sac-bsa)
#3223: remove duplicate strain softening parameters (proposed by naliboff)
#3221: [WIP] Factor out diffusion and dislocation creep (proposed by anne-glerum)
#3220: do not create temperature matrix for first_timestep_only_single_Stokes (proposed by tjhei)
#3219: Add a strain dependent rheology model (proposed by naliboff; merged)
#3218: Add missing braces around a case statement (proposed by gassmoeller; merged)
#3217: update relase-tasklist (proposed by tjhei; merged)

And this is a list of recently opened or closed discussions:

#3227 Parameter-file.prm missing (opened)
#3226 improve error message on constant temperture model using thermal energy density mesh refinement? (opened)
#3222 Fix “Boundary temperature model” documentation (opened and closed)

A list of all major changes since the last release can be found at this website .

Thanks for being part of the community!

Let us know about questions, problems, bugs or just share your experience by visting our [forum](, or by opening issues or pull requests on [Github](
Additional information can be found at our [official website](, and CIG's [ASPECT website](