# ASPECT Newsletter #115

**URL:** <https://community.geodynamics.org/t/aspect-newsletter-115/1596>\
**Category:** ASPECT\
**Created:** [December 1, 2020, 5:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-115/1596 "2020-12-01T17:00:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![rgassmoeller](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/rgassmoeller/32/49_2.png) [@rgassmoeller](https://community.geodynamics.org/u/rgassmoeller)\
**Post date:** [December 1, 2020, 5:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-115/1596/1 "2020-12-01T17:00:21Z")

</div>

Hello everyone!

This is ASPECT newsletter #115.  
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:

[#3910](https://github.com/geodynamics/aspect/pull/3910): update parameters (implemented by [tjhei](https://github.com/tjhei))  
[#3909](https://github.com/geodynamics/aspect/pull/3909): www: create a redirect to manual.pdf (implemented by [tjhei](https://github.com/tjhei))  
[#3908](https://github.com/geodynamics/aspect/pull/3908): ViscoPlastic rheology migrated into separate rheology module (implemented by [bobmyhill](https://github.com/bobmyhill))  
[#3907](https://github.com/geodynamics/aspect/pull/3907): fix indentation in one spot (implemented by [tjhei](https://github.com/tjhei); reviewed by [bobmyhill](https://github.com/bobmyhill))  
[#3906](https://github.com/geodynamics/aspect/pull/3906): apply update script (implemented by [tjhei](https://github.com/tjhei); reviewed by [bobmyhill](https://github.com/bobmyhill))  
[#3905](https://github.com/geodynamics/aspect/pull/3905): Fix update\_all\_files.sh script (implemented by [tjhei](https://github.com/tjhei))  
[#3903](https://github.com/geodynamics/aspect/pull/3903): Add particle property plugin CPO core (implemented by [MFraters](https://github.com/MFraters))  
[#3902](https://github.com/geodynamics/aspect/pull/3902): Rename strain rate variable (implemented by [naliboff](https://github.com/naliboff); reviewed by [bobmyhill](https://github.com/bobmyhill))  
[#3901](https://github.com/geodynamics/aspect/pull/3901): Prevent a warning in release mode of an unused variable in principle stress visualization (implemented by [MFraters](https://github.com/MFraters); reviewed by [naliboff](https://github.com/naliboff))  
[#3900](https://github.com/geodynamics/aspect/pull/3900): rename Steinberger material model variable. (implemented by [MFraters](https://github.com/MFraters); reviewed by [naliboff](https://github.com/naliboff))  
[#3899](https://github.com/geodynamics/aspect/pull/3899): Update README maintainer and developer lists (implemented by [naliboff](https://github.com/naliboff); reviewed by [tjhei](https://github.com/tjhei))  
[#3898](https://github.com/geodynamics/aspect/pull/3898): CI: add clang-tidy [WIP] (implemented by [tjhei](https://github.com/tjhei))  
[#3897](https://github.com/geodynamics/aspect/pull/3897): Fix stress (implemented by [anne-glerum](https://github.com/anne-glerum); reviewed by [naliboff](https://github.com/naliboff))  
[#3896](https://github.com/geodynamics/aspect/pull/3896): Add option to use the adiabatic temperature in the multicomponent incompressible density equation (implemented by [naliboff](https://github.com/naliboff))  
[#3895](https://github.com/geodynamics/aspect/pull/3895): clang-tidy update (implemented by [tjhei](https://github.com/tjhei); reviewed by [MFraters](https://github.com/MFraters))  
[#3888](https://github.com/geodynamics/aspect/pull/3888): removed factor two in elasticity strain rate calculation (implemented by [bobmyhill](https://github.com/bobmyhill); reviewed by [naliboff](https://github.com/naliboff))  
[#3886](https://github.com/geodynamics/aspect/pull/3886): Refactor viscoelastic viscosity (implemented by [bobmyhill](https://github.com/bobmyhill); reviewed by [naliboff](https://github.com/naliboff))  
[#3878](https://github.com/geodynamics/aspect/pull/3878): Principal stress visulization output (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [naliboff](https://github.com/naliboff))  
[#3823](https://github.com/geodynamics/aspect/pull/3823): New: Composite viscous creep rheology (implemented by [bobmyhill](https://github.com/bobmyhill); reviewed by [naliboff](https://github.com/naliboff))  
[#3473](https://github.com/geodynamics/aspect/pull/3473): Add plastic damper to plasticity (implemented by [naliboff](https://github.com/naliboff); reviewed by [bobmyhill](https://github.com/bobmyhill))

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

[#3904](https://github.com/geodynamics/aspect/issues/3904) Update scripts in /doc (opened)  
[#3887](https://github.com/geodynamics/aspect/issues/3887) Possible factor 2 error in elasticity.cc (closed)  
[#3403](https://github.com/geodynamics/aspect/issues/3403) Initial topography causes mesh holes (closed)

A list of all major changes since the last release can be found at [this website](https://aspect.geodynamics.org/doc/doxygen/changes_current.html).

Thanks for being part of the community!

Let us know about questions, problems, bugs or just share your experience by visting our [forum](https://community.geodynamics.org/c/aspect), or by opening issues or pull requests on [Github](https://www.github.com/geodynamics/aspect).  
Additional information can be found at our [official website](https://aspect.geodynamics.org/), and CIG’s [ASPECT website](https://geodynamics.org/cig/software/aspect/).