The Pplates Virtual Earth project - how Pplates implements pseudo-rheology
This map in the Tonga region shows how a pseudo-rheology can be imposed
on the mesh faces. The polygon allows the image to be classified. The mesh
allows a Lagrangian description of those coordinates. The "arc" is deformed
and bent using a pseudo-rheology, in this case to define the starting
configuration a for reconstruction.
To see the movie click on the image (150 Mb).
Pplates allows the user to classify a mesh or sub-mesh with rheological properties that can then distribute stress and strain among its mesh faces. Currently, visco-elastic properties can be attributed to a mesh face based on a model of node-connecting springs. The mesh's springs are allowed to distribute strain (i.e. adjusting node positions) based an a prescribed amount of stress decrease after an external perturbation of one or more nodes. Other simple models can be added to the Pplates repertoire for simulating, e.g., visco-plastic flow, etc.
To provide an example as to how to utilize the AuScope software machine, the modelling and simulation community intends to illustrate a 4D geodynamics workflow, focused on the evolution of the Sunda-Java subduction zone. If you are interested in becoming a user of the NCRIS AuScope software machine, make direct contact with the scientists building the individual components. To access and utilize Pplates, go to the software repository. If you want us to give you a hand, develop the specifications for a use case, and let us know.
Pplates is designed and built by Dr Joe Kurtz and Professor Gordon Lister.