# General **URL:** https://community.geodynamics.org/c/general/1.md [Latest](https://community.geodynamics.org/latest.md) · [Categories](https://community.geodynamics.org/categories.md) · [Tags](https://community.geodynamics.org/tags.md) --- ## [Welcome to the CIG community](https://community.geodynamics.org/t/welcome-to-the-cig-community/8)
**Author:** [@system](https://community.geodynamics.org/u/system)\ **Replies:** 0\ **Last updated:** [September 18, 2018, 10:18pm UTC](https://community.geodynamics.org/t/welcome-to-the-cig-community/8 "2018-09-18T22:18:03Z")
We aspire to accelerate the understanding of the dynamical properties of the Earth and Earth-like systems by providing innovative methods, resources, and technologies enabling research from core to crust, and beyond. Th… --- ## [Tatic stress change from a kinematic fault is ~10–100× larger than expected — what could cause this?](https://community.geodynamics.org/t/tatic-stress-change-from-a-kinematic-fault-is-10-100x-larger-than-expected-what-could-cause-this/4627)
**Author:** [@adix](https://community.geodynamics.org/u/adix)\ **Replies:** 1\ **Last updated:** [September 18, 2026, 3:55am UTC](https://community.geodynamics.org/t/tatic-stress-change-from-a-kinematic-fault-is-10-100x-larger-than-expected-what-could-cause-this/4627 "2026-09-18T03:55:49Z")
Hello, I’m using PyLith 2.2.2 (MPI, tet4 mesh from Cubit) to compute the static stress change (stress drop) on a subduction megathrust, by imposing an interseismic slip deficit as kinematic slip on the fault with FaultC… --- ## [Question about nonlinear convergence problems and compositional setup using Geodynamic World Builder](https://community.geodynamics.org/t/question-about-nonlinear-convergence-problems-and-compositional-setup-using-geodynamic-world-builder/4606)
**Author:** [@Hxseal](https://community.geodynamics.org/u/Hxseal)\ **Replies:** 2\ **Last updated:** [August 12, 2026, 3:20am UTC](https://community.geodynamics.org/t/question-about-nonlinear-convergence-problems-and-compositional-setup-using-geodynamic-world-builder/4606 "2026-08-12T03:20:12Z")
Hello everyone, I am new to ASPECT and I am currently trying to simulate the influence of a residual ocean basin on the continental margin after the end of subduction. However, I have encountered a problem with nonlinea… --- ## [Dynamic rupture](https://community.geodynamics.org/t/dynamic-rupture/4583)
**Author:** [@adix](https://community.geodynamics.org/u/adix)\ **Replies:** 2\ **Last updated:** [July 17, 2026, 5:49am UTC](https://community.geodynamics.org/t/dynamic-rupture/4583 "2026-07-17T05:49:24Z")
Excuse me, I am doing dynamic rupture simulations and got this very poor result. Under what circumstances would this kind of point‑like pattern appear? --- ## [How to calculate the initial stress database based on the slip displacement](https://community.geodynamics.org/t/how-to-calculate-the-initial-stress-database-based-on-the-slip-displacement/4575)
**Author:** [@adix](https://community.geodynamics.org/u/adix)\ **Replies:** 1\ **Last updated:** [July 4, 2026, 3:06am UTC](https://community.geodynamics.org/t/how-to-calculate-the-initial-stress-database-based-on-the-slip-displacement/4575 "2026-07-04T03:06:48Z")
“I am a beginner learning Pylith. The slip amount shown in the figure is obtained from inversion. How can I use it to obtain the initial stress database?” --- ## [Symposium announcement: Earth, a dynamic planet: A tribute to Xavier Le Pichon - Paris - May 28-29, 2026](https://community.geodynamics.org/t/symposium-announcement-earth-a-dynamic-planet-a-tribute-to-xavier-le-pichon-paris-may-28-29-2026/4499)
**Author:** [@barbararz](https://community.geodynamics.org/u/barbararz)\ **Replies:** 0\ **Last updated:** [March 26, 2026, 8:37pm UTC](https://community.geodynamics.org/t/symposium-announcement-earth-a-dynamic-planet-a-tribute-to-xavier-le-pichon-paris-may-28-29-2026/4499 "2026-03-26T20:37:16Z")
Dear CIG Community, Please find enclosed the program of the workshop: ”Earth, a dynamic planet: A tribute to Xavier Le Pichon”, to be held at the Collège de France in Paris on May 28th and 29th. Colloque XLP 28-29 mai… --- ## [PNAS-Nexus call for papers on "Machine Learning and Geosciences". New Deadline: April 17, 2026](https://community.geodynamics.org/t/pnas-nexus-call-for-papers-on-machine-learning-and-geosciences-new-deadline-april-17-2026/4481)
**Author:** [@xiyuanbao](https://community.geodynamics.org/u/xiyuanbao)\ **Replies:** 0\ **Last updated:** [March 5, 2026, 8:07pm UTC](https://community.geodynamics.org/t/pnas-nexus-call-for-papers-on-machine-learning-and-geosciences-new-deadline-april-17-2026/4481 "2026-03-05T20:07:38Z")
Dear colleagues, PNAS Nexus, the sister journal of PNAS (a gold open-access journal), has announced a call for papers for a special issue on “Machine Learning and Geosciences”. In response to strong community interest, t… --- ## [CIG: 2026 Upcoming Events](https://community.geodynamics.org/t/cig-2026-upcoming-events/4445)
**Author:** [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Replies:** 0\ **Last updated:** [January 27, 2026, 6:34pm UTC](https://community.geodynamics.org/t/cig-2026-upcoming-events/4445 "2026-01-27T18:34:25Z")
2026 ASPECT Virtual User Meeting - February 3-4 Open to everyone interested in ASPECT, this annual meeting connects the worldwide community in sharing science applications and the latest feature additions. Learn ab… --- ## [MacOS support for SNAC](https://community.geodynamics.org/t/macos-support-for-snac/4380)
**Author:** [@eitanrapa](https://community.geodynamics.org/u/eitanrapa)\ **Replies:** 9\ **Last updated:** [December 10, 2025, 5:57pm UTC](https://community.geodynamics.org/t/macos-support-for-snac/4380 "2025-12-10T17:57:45Z")
Hello, I am trying to install SNAC on a MacOS device but it seems that the Clang compiler is running into problems when running make. In particular, I think a lot of files are missing #include \ that Clang is st… --- ## [Error Installing dealii](https://community.geodynamics.org/t/error-installing-dealii/3656)
**Author:** [@adhitama](https://community.geodynamics.org/u/adhitama)\ **Replies:** 5\ **Last updated:** [October 10, 2025, 2:00am UTC](https://community.geodynamics.org/t/error-installing-dealii/3656 "2025-10-10T02:00:31Z")
Dear all, I need some help. I want to install aspect for my research, then tried to install dealii in wsl2 ubuntu 22.04 and got this error: candi tries now to download, configure, build and install: Project: deal.II… --- ## [Orcid sign-in error](https://community.geodynamics.org/t/orcid-sign-in-error/4241)
**Author:** [@AuSpotter](https://community.geodynamics.org/u/AuSpotter)\ **Replies:** 0\ **Last updated:** [August 11, 2025, 4:27am UTC](https://community.geodynamics.org/t/orcid-sign-in-error/4241 "2025-08-11T04:27:56Z")
Today when looking to enrol in a pylith tutorial my login attempt with ORCID failed: Error E\_HUBZERO\_USER\_PLUGIN\_FAILED I double checked: ORCID is up and my login details are accurate; this may be an issue at either … --- ## [Parameter settings for burgers in Pylith 4.2.0](https://community.geodynamics.org/t/parameter-settings-for-burgers-in-pylith-4-2-0/4218)
**Author:** [@Yali](https://community.geodynamics.org/u/Yali)\ **Replies:** 0\ **Last updated:** [July 16, 2025, 4:05am UTC](https://community.geodynamics.org/t/parameter-settings-for-burgers-in-pylith-4-2-0/4218 "2025-07-16T04:05:09Z")
Dear Pylith team, I’m currently running viscoelastic simulations (for post-seismic study) using Burgers rheology. Burger rheology is represented by a generalized Maxwell model in PyLith. However, when setting μ₃ to zero… --- ## [DOAJ Geodynamica launches July 15](https://community.geodynamics.org/t/doaj-geodynamica-launches-july-15/4203)
**Author:** [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Replies:** 0\ **Last updated:** [July 7, 2025, 4:19pm UTC](https://community.geodynamics.org/t/doaj-geodynamica-launches-july-15/4203 "2025-07-07T16:19:40Z")
Geodynamic Launches We are excited to announce that \*Geodynamica\*, a diamond open access journal, will be \*\*open for submission beginning July 15!\*\* We have gathered a team of dedicated editors and staff members who are… --- ## [2025 CIG TNG: Update on Room Availabiity](https://community.geodynamics.org/t/2025-cig-tng-update-on-room-availabiity/4200)
**Author:** [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Replies:** 0\ **Last updated:** [July 3, 2025, 12:16am UTC](https://community.geodynamics.org/t/2025-cig-tng-update-on-room-availabiity/4200 "2025-07-03T00:16:09Z")
We have had an overwhelming demand for rooms beginning on Sunday, August 3. Hence, certain room types have been showing up as unavailable. HOWEVER, for The Village. 3 Studios have been added beginning Sunday, August … --- ## [Preparing for 2025 CIG TNG geodynamics community meeting](https://community.geodynamics.org/t/preparing-for-2025-cig-tng-geodynamics-community-meeting/4188)
**Author:** [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Replies:** 0\ **Last updated:** [June 27, 2025, 4:25pm UTC](https://community.geodynamics.org/t/preparing-for-2025-cig-tng-geodynamics-community-meeting/4188 "2025-06-27T16:25:04Z")
We are ramping up here for the geodynamics community meeting 2025 CIG The Next Generation and are finalizing the program. We have a fantastic lineup of invited and contributed talks. Keynotes include: Jed Brown, … --- ## [I can not use aspect](https://community.geodynamics.org/t/i-can-not-use-aspect/4183)
**Author:** [@beixin](https://community.geodynamics.org/u/beixin)\ **Replies:** 5\ **Last updated:** [June 25, 2025, 4:27pm UTC](https://community.geodynamics.org/t/i-can-not-use-aspect/4183 "2025-06-25T16:27:51Z")
I tried to follow the tutorial on vs aspect, but an error occurred.as follows: I enter: ~/aspect/aspect tutorial.prm bash: /home/ubuntu/aspect/aspect: No such file or directory Then found this path,it shows:“aspect”:b… --- ## [2025 CIG TNG - 3 days left for Abstracts](https://community.geodynamics.org/t/2025-cig-tng-3-days-left-for-abstracts/4170)
**Author:** [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Replies:** 0\ **Last updated:** [June 13, 2025, 2:23am UTC](https://community.geodynamics.org/t/2025-cig-tng-3-days-left-for-abstracts/4170 "2025-06-13T02:23:17Z")
Remember to submit your abstracts by this Sunday, June 15 for the 2025 CIG The Next Generation --- ## [Inquiry About Divergence Issue in Collision Model](https://community.geodynamics.org/t/inquiry-about-divergence-issue-in-collision-model/4133)
**Author:** [@3Faker3](https://community.geodynamics.org/u/3Faker3)\ **Replies:** 1\ **Last updated:** [May 16, 2025, 12:34am UTC](https://community.geodynamics.org/t/inquiry-about-divergence-issue-in-collision-model/4133 "2025-05-16T00:34:18Z")
Hello everyone. I’m simulating a collision process (initial composition in Fig.1 ). The upper/lower crust (upcrust1 /lowcrust1 ) compositions diverge unexpectedly during runtime(Fig 2,raw data in collision1 2 3.zip,plea… --- ## [Is ASPECT capable of simulating three-dimensional plate subduction motions?](https://community.geodynamics.org/t/is-aspect-capable-of-simulating-three-dimensional-plate-subduction-motions/4120)
**Author:** [@LPL](https://community.geodynamics.org/u/LPL)\ **Replies:** 2\ **Last updated:** [May 7, 2025, 2:30am UTC](https://community.geodynamics.org/t/is-aspect-capable-of-simulating-three-dimensional-plate-subduction-motions/4120 "2025-05-07T02:30:24Z")
Is ASPECT capable of simulating three-dimensional plate subduction motions? --- ## [REMINDER—CIG Webinar: Thursday May 8th @ 4 PM PDT](https://community.geodynamics.org/t/reminder-cig-webinar-thursday-may-8th-4-pm-pdt/4110)
**Author:** [@arushi\_saxena](https://community.geodynamics.org/u/arushi_saxena)\ **Replies:** 0\ **Last updated:** [May 5, 2025, 12:43pm UTC](https://community.geodynamics.org/t/reminder-cig-webinar-thursday-may-8th-4-pm-pdt/4110 "2025-05-05T12:43:38Z")
Hello all, Don’t forget to register here to attend the webinar this week on “Tetrahedral MHD dynamo model” by Akira Kageyama. Have a great week ahead! Regards, Arushi --- ## [ASPECT Splinter Meeting at EGU 2025: Mon 16:15-18:00, room 2.61, April 28](https://community.geodynamics.org/t/aspect-splinter-meeting-at-egu-2025-mon-1600-room-2-61-april-28/4058)
**Author:** [@Poulami](https://community.geodynamics.org/u/Poulami)\ **Replies:** 2\ **Last updated:** [April 9, 2025, 4:08pm UTC](https://community.geodynamics.org/t/aspect-splinter-meeting-at-egu-2025-mon-1600-room-2-61-april-28/4058 "2025-04-09T16:08:55Z")
Dear all, We are holding a 2025 ASPECT Splinter meeting in EGU 2025 on April 28th. We have made a google sheet where you can sign up, let us know of any ASPECT related presentations you may present at EGU, and whether y… --- ## [CIG Webinar 13th Mar @ noon PST](https://community.geodynamics.org/t/cig-webinar-13th-mar-noon-pst/3983)
**Author:** [@arushi\_saxena](https://community.geodynamics.org/u/arushi_saxena)\ **Replies:** 0\ **Last updated:** [March 4, 2025, 5:53pm UTC](https://community.geodynamics.org/t/cig-webinar-13th-mar-noon-pst/3983 "2025-03-04T17:53:27Z")
Hello all, Don’t forget to register here for our webinar next week on March 13th at noon PST. Our speaker is Qianyi Lu, who will be presenting on “A Synoptic View of Mantle Plume Shapes: Leveraging VR for Geodynamic Ana… --- ## [CIG Webinar on March 13th @ Noon PST](https://community.geodynamics.org/t/cig-webinar-on-march-13th-noon-pst/3967)
**Author:** [@arushi\_saxena](https://community.geodynamics.org/u/arushi_saxena)\ **Replies:** 0\ **Last updated:** [February 24, 2025, 6:02pm UTC](https://community.geodynamics.org/t/cig-webinar-on-march-13th-noon-pst/3967 "2025-02-24T18:02:18Z")
Hello all, The Webinar Series 2024–2025 continues with our next talk on March 13th at noon PST. The speaker is Qianyi Lu, who will be presenting on “A Synoptic View of Mantle Plume Shapes: Leveraging VR for Geodynamic A… --- ## [MPI error and particles lost rapidly](https://community.geodynamics.org/t/mpi-error-and-particles-lost-rapidly/3965)
**Author:** [@SunnyQbang](https://community.geodynamics.org/u/SunnyQbang)\ **Replies:** 2\ **Last updated:** [February 24, 2025, 4:13pm UTC](https://community.geodynamics.org/t/mpi-error-and-particles-lost-rapidly/3965 "2025-02-24T16:13:08Z")
Hi every one! I create a new environment using conda to compile dealii.9.6 to compile aspect in the supercomputer .And i use the module mpi gun 4.1.4. But there is a problem when get in the step30. And i use the fre… --- ## [Inquiry Regarding Two-Phase Flow and Partial Melting Models in ASPECT](https://community.geodynamics.org/t/inquiry-regarding-two-phase-flow-and-partial-melting-models-in-aspect/3946)
**Author:** [@HeTing23](https://community.geodynamics.org/u/HeTing23)\ **Replies:** 1\ **Last updated:** [February 13, 2025, 9:37pm UTC](https://community.geodynamics.org/t/inquiry-regarding-two-phase-flow-and-partial-melting-models-in-aspect/3946 "2025-02-13T21:37:27Z")
Dear ASPECT Community, I hope this message finds you well. I am currently working on a project that explores two-phase flow models, and I would like to inquire about the capabilities of ASPECT in this area. Specificall… --- ## [CIG Webinar: Thursday Feb 13 @ Noon PST](https://community.geodynamics.org/t/cig-webinar-thursday-feb-13-noon-pst/3908)
**Author:** [@arushi\_saxena](https://community.geodynamics.org/u/arushi_saxena)\ **Replies:** 0\ **Last updated:** [February 3, 2025, 2:52pm UTC](https://community.geodynamics.org/t/cig-webinar-thursday-feb-13-noon-pst/3908 "2025-02-03T14:52:55Z")
Hello all, The Webinar Series 2024–2025 continues next Thursday, February 13th, at Noon PST. Our speaker is Christodoulos Kyriakopoulos, who will be presenting on “Enhancing Earthquake Scientific Literacy by Leveraging … --- ## [CIG Meeting reminders: Webinars, Business Meeting and More!](https://community.geodynamics.org/t/cig-meeting-reminders-webinars-business-meeting-and-more/3872)
**Author:** [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Replies:** 0\ **Last updated:** [January 16, 2025, 6:02pm UTC](https://community.geodynamics.org/t/cig-meeting-reminders-webinars-business-meeting-and-more/3872 "2025-01-16T18:02:08Z")
\*\*\* TODAY \*\*\* 16 JANUARY 2025 @12P / NOON PST Accurate and accessible colour use for representing numerical models Fabio Crameri, Undertone.design, Bern, Switzerland; International Space Science Institute (ISSI), Bern… --- ## [Cubit horizontal refine mesh](https://community.geodynamics.org/t/cubit-horizontal-refine-mesh/3812)
**Author:** [@Niloo69](https://community.geodynamics.org/u/Niloo69)\ **Replies:** 1\ **Last updated:** [December 16, 2024, 6:24pm UTC](https://community.geodynamics.org/t/cubit-horizontal-refine-mesh/3812 "2024-12-16T18:24:38Z")
I am working on a block where I need to change the generated mesh size in the x-direction. This means increasing continuously in the x-direction (the same as the figure but in the horizontal—x direction). Could you pleas… --- ## [Problem when running the viscoelastic model？](https://community.geodynamics.org/t/problem-when-running-the-viscoelastic-model/3809)
**Author:** [@yangxiao](https://community.geodynamics.org/u/yangxiao)\ **Replies:** 0\ **Last updated:** [December 13, 2024, 4:03pm UTC](https://community.geodynamics.org/t/problem-when-running-the-viscoelastic-model/3809 "2024-12-13T16:03:25Z")
Dear Sir, I would like to ask why, when running the viscoelastic model, it works fine with 1 CPU, but when using more than 1 CPU, the following error occurs:mpinemesis: …/…/…/pylith-2.2.2/libsrc/pylith/materials/Elastic… --- ## [Why can't we add particles to the cell](https://community.geodynamics.org/t/why-cant-we-add-particles-to-the-cell/3743)
**Author:** [@Xiao](https://community.geodynamics.org/u/Xiao)\ **Replies:** 5\ **Last updated:** [November 18, 2024, 5:03am UTC](https://community.geodynamics.org/t/why-cant-we-add-particles-to-the-cell/3743 "2024-11-18T05:03:13Z")
Hi all, I tried to calculate a subduction model using the particle method, which is my initial setup ###### Initial compositional fields ##### subsection Compositional fields \*\* set Number of field… [Next page](https://community.geodynamics.org/c/general/1.md?page=1)