# ASPECT Newsletter #224 **URL:** \ **Category:** ASPECT\ **Created:** [October 13, 2025, 10:00am UTC](https://community.geodynamics.org/t/aspect-newsletter-224/4326 "2025-10-13T10:00:19Z")\ **Posts on this page:** 1\ **Page:** 1
**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:** [October 13, 2025, 10:00am UTC](https://community.geodynamics.org/t/aspect-newsletter-224/4326/1 "2025-10-13T10:00:19Z")
Hello everyone! This is ASPECT newsletter #224. 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: [#6711](https://github.com/geodynamics/aspect/pull/6711): Move InversseVelocityBlock to a header file for block Stokes preconditioning and add template arguments for vector/matrix type.[WIP]. (implemented by [quangx](https://github.com/quangx)) [#6710](https://github.com/geodynamics/aspect/pull/6710): Add new particle addition algorithms (WIP) (implemented by [JarettBakerDunn](https://github.com/JarettBakerDunn)) [#6709](https://github.com/geodynamics/aspect/pull/6709): fix equation in material model documentation (implemented by [naliboff](https://github.com/naliboff); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6705](https://github.com/geodynamics/aspect/pull/6705): Add readmes for all cookbooks + benchmarks (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei)) [#6703](https://github.com/geodynamics/aspect/pull/6703): doxygen: add AMS extensions (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6702](https://github.com/geodynamics/aspect/pull/6702): Introduce page tags into documentation (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei)) [#6701](https://github.com/geodynamics/aspect/pull/6701): fix the invalid formula in the documentation of class ViscoPlastic (implemented by [YiminJin](https://github.com/YiminJin)) [#6699](https://github.com/geodynamics/aspect/pull/6699): doxygen: fix formulas using good mathjax location (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6698](https://github.com/geodynamics/aspect/pull/6698): fix two doxygen function arguments (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6697](https://github.com/geodynamics/aspect/pull/6697): update parameters (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6696](https://github.com/geodynamics/aspect/pull/6696): Do not access timer inside subsection (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei)) [#6692](https://github.com/geodynamics/aspect/pull/6692): Update reference tester version. (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei)) [#6691](https://github.com/geodynamics/aspect/pull/6691): Fix fastscape warning (implemented by [tiannh7](https://github.com/tiannh7); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6690](https://github.com/geodynamics/aspect/pull/6690): doc: update docker instructions and mention [ghcr.io](http://ghcr.io) (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6689](https://github.com/geodynamics/aspect/pull/6689): Fix escape symbols (implemented by [tiannh7](https://github.com/tiannh7); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6688](https://github.com/geodynamics/aspect/pull/6688): Add assertions. (implemented by [bangerth](https://github.com/bangerth); reviewed by [jdannberg](https://github.com/jdannberg)) [#6687](https://github.com/geodynamics/aspect/pull/6687): Do some error checking to avoid accessing invalid vector elements. (implemented by [bangerth](https://github.com/bangerth)) [#6684](https://github.com/geodynamics/aspect/pull/6684): Add GMG global coarsening test (implemented by [quangx](https://github.com/quangx); reviewed by [tjhei](https://github.com/tjhei)) [#6680](https://github.com/geodynamics/aspect/pull/6680): improve SHmax postprocess (implemented by [tiannh7](https://github.com/tiannh7); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6676](https://github.com/geodynamics/aspect/pull/6676): Make particle distribution score postprocessor sum particles across cell boundaries (implemented by [JarettBakerDunn](https://github.com/JarettBakerDunn); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6660](https://github.com/geodynamics/aspect/pull/6660): Prescribed fields plugins (implemented by [lhy11009](https://github.com/lhy11009); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6659](https://github.com/geodynamics/aspect/pull/6659): Add Iterated advection, no stokes solver scheme (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [jdannberg](https://github.com/jdannberg)) [#6651](https://github.com/geodynamics/aspect/pull/6651): Particle deletion using point density function (implemented by [JarettBakerDunn](https://github.com/JarettBakerDunn); reviewed by [gassmoeller](https://github.com/gassmoeller)) [#6645](https://github.com/geodynamics/aspect/pull/6645): Provide a useful error message. (implemented by [bangerth](https://github.com/bangerth); reviewed by [gassmoeller](https://github.com/gassmoeller)) And this is a list of recently opened or closed discussions: [#6708](https://github.com/geodynamics/aspect/issues/6708) GMG-GC: implement free slip (opened) [#6707](https://github.com/geodynamics/aspect/issues/6707) GMG-GC: implement “no averaging” (opened) [#6706](https://github.com/geodynamics/aspect/issues/6706) GMG-GC: implement free surface (opened) [#6704](https://github.com/geodynamics/aspect/issues/6704) Rework cookbooks and benchmarks with internal constraints using the prescribed solution plugin system (opened) [#6700](https://github.com/geodynamics/aspect/issues/6700) Using the correct part of strian rate for dislocation creep rheology and plastic weakening (opened) [#6695](https://github.com/geodynamics/aspect/issues/6695) doxygen files cannot display formulas (opened and closed) [#6694](https://github.com/geodynamics/aspect/issues/6694) Additional FastScape output uses continental erosional parameters for the marine domain (opened) [#6693](https://github.com/geodynamics/aspect/issues/6693) Develop new benchmarks comparing the sticky-air and ALE (free-surface) approaches (opened) [#6686](https://github.com/geodynamics/aspect/issues/6686) Boundary convective heat flux manager makes questionable choices 🙂 (opened and closed) [#6679](https://github.com/geodynamics/aspect/issues/6679) Improvements to `maximum_horizontal_compressive_stress` Plugin (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/).