A series of compact implicit schemes of fourth and sixth orders are developed for solving differential equations involved in geodynamics simulations. Three illustrative examples are described to demonstrate that high-order convergence rates are achieved while good efficiency in terms of fewer grid points is maintained. This study shows that high-order compact implicit difference methods provide...

THE EASTERN SNAKE RIVER PLAINS, IDAHO: SIMILARITIES AND POSSIBLE PETROLOGIC CONTRIBUTIONS TO TOPOGRAPHY. S. E. H. Sakimoto , T. K. P. Gregg, S. S. Hughes, and J. Chadwick, GEST at the Geodynamics Branch, Code 921, NASA Goddard Space Flight Center, Greenbelt, MD 20771, [email protected], Department of Geological Sciences, The University at Buffalo, State University of New York, ...

I review some features of the Global Geodynamics Project during its initial phase of operation 1997–2003. These fall into three categories: (1) instrumental—the development of the superconducting gravimeters during this time; (2) organizational—how the various SG groups have come together to improve their installations and provide their data; and (3) scientific—what have been some of the notabl...

[1] Much progress has been made over the past several decades in delineating the structure of subducting slabs, but several key aspects of their dynamics remain poorly constrained. Major unsolved problems in subduction geodynamics include those related to mantle wedge viscosity and rheology, slab hydration and dehydration, mechanical coupling between slabs and the ambient mantle, the geometry o...

We present an application of entropy production as an abstraction tool for complex processes in geodynamics. Geodynamic theories are generally based on the principle of maximum dissipation being equivalent to the maximum entropy production. This represents a restriction of the second law of thermodynamics to its upper bound. In this paper, starting from the equation of motion, the first law of ...

We present a new algorithm for modeling a self-consistent set of global plate polygons. Each plate polygon is composed of a finite list of plate margins, all with different Euler poles. We introduce a "Continuously Closed Plate" (CCP), such that, as each margin moves independently, the plate polygon remains closed geometrically as a function of time. This method solves emerging needs in computa...

lstituto Beni Culturali (Institute for Cultural Heritage) is the cultural institution of Regione Emilia Romagna. IBC web site [6] has been completely revised in cooperation with Hypermedia Open Center [S], the laboratory of the Electronics and Information Department at Politecnico di Milano. We adopted W2000 model for requirements analysis and for the analysis and organization of the applicatio...

T. Bardaji,* J.L. Goy,t P.G. Siiva,t C. Zazo,t N.A. Miirner,§ L. Somoza,� c.J. Dabrioll and J. Baena** *Departmento Geolog(a, Universidad AlcalU de Henares, 28871 Madrid, Spain tDepartmento Geolog(a, Universidad Salamanca, 37008 Salamanca, Spain tDepartmento Geolog(a, Museo Nal. Ciencias Nat. C.S.I. C. Jose Gutierrez Abescal, 28005 Madrid, Spain §Paleogeophysics and Geodynamics, S·I0691 Stockho...