Lianxing Wen -> Research -> Geodynamics

Theoretical and Observational Geodynamics

Our research in geodynamics is directed at understanding the relationship of large scale geodynamical observables (geoid, topography, plate motions and intra-plate stresses) with mantle rheology and convection. Mantle convection causes lateral variations of chemistry and temperature in the mantle and those lateral variations eventually drive mantle convection and produce signatures which are observable at the surface of the Earth. Understanding those surface signatures is crucial to understanding mantle dynamics and those surface signatures must be used to test against predictions from convection models. Our approaches toward the problem have been both theoretical and observational. We have developed new methods to calculate three-dimensional viscous flow with lateral variation of rheology. By applying new techniques, we devote most of our efforts in geodynamics to understanding deep mantle processes using constraints from those surface observables and seismic results.