Visualization of downwellings in 3-D spherical mantle convection

Wang, Shuo; Zhang, Shuxia; Yuen, David A.

doi:10.1016/j.pepi.2007.03.010

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…The upward spiraling trajectories generated by complex motions in the mantle/lithosphere system have also been hypothesized by Ref. [7][8][9][10][11][12].…”

Section: Morphologies and Elevations Having Elliptical Spiraling Andmentioning

confidence: 95%

Vortex Theory and Earth Dynamics

Straser¹,

Ferrari²

2016

JGRE

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Morphological evidence in active tectonic areas consisting of subcircular shapes suggests that these geometries may originate from alternative mechanisms to those described by translational dynamics of complex faults. The mechanics behind endogenic forces, in particular convection currents, hasn't been completely explained. Differing in density from upward flows developing in atmosphere and in water, magma upwelling from the mantle can trigger endogenic vortexes in particular conditions and due to Coriolis Force. At their onset and ascent phase, vortexes apply lateral forces as result of rotation, open their way toward the surface and over time stabilize the channel. Opposite to a rising linear flow which compacts overlying materials impeding their surge, vortex flows unload the materials externally and compact them on the lateral surface of the channel, thus making it more regular and stable. Torsional movements on the surface associated to vulcanites, lateral ramps and subcircular elevations, can be observed. Other phenomena that may be consequence of vortex dynamics are the volcanic cones showing pseudo-rotations in the morphologies surrounding the crater. In this study we suggest a modeling for a vortex theory which may explain the Earth dynamics in terms of spiraling movement and magma upwelling stabilizing over time.

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“…The upward spiraling trajectories generated by complex motions in the mantle/lithosphere system have also been hypothesized by Ref. [7][8][9][10][11][12].…”

Section: Morphologies and Elevations Having Elliptical Spiraling Andmentioning

confidence: 95%

Vortex Theory and Earth Dynamics

Straser¹,

Ferrari²

2016

JGRE

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“…In contrast to the traditional ways of visualization, such as the surface rendering, isoline, isosurface, etc., the volume rendering technique is becoming more and more attractive to geoscientists, who are recently making significant inroads into parallel visualization, using software tools such as PV3 and Paraview (Jordan et al 1996;Moder et al 2007;Stegman et al 2008). Previously, the multi-isosurface and streamline representation methods have been preferred and they have served to visualize successfully the 3D spherical mantle convection (Wang et al 2007;Moder et al 2007). These isosurfaces and streamlines can represent volumetric data field(s) on a 3D surface by interpolating point data on regular or irregular grids.…”

Section: Introductionmentioning

confidence: 99%

Volume rendering visualization of 3D spherical mantle convection with an unstructured mesh

et al. 2008

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We propose a new approach to utilize the algorithm of hardware-assisted visibility sorting (HAVS) in the 3D volume rendering of spherical mantle convection simulation results over unstructured grid configurations. We will also share our experience in using three different spherical convection codes and then taking full advantages of the enhanced efficiency of visualization techniques, which are based on the HAVS techniques and related transfer functions. The transfer function is a powerful tool designed specifically for editing and exploring large-scale datasets coming from numerical computation for a given environmental setting, and generates hierarchical data structures, which will be used in the future for fast access of GPU visualization facilities. This method will meet the coming urgent needs of real-time visualization of 3D mantle convection, by avoiding the demands of huge amount of I/O space and intensive network traffic over distributed parallel terascale or petascale architecture.

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“…We will use the Amira package (http://www.amiravis.com) as a vehicle for demonstrating the usefulness and importance of visualization, which goes hand in hand with numerical simulations. This facile tool Amira has been used by our group in many areas of science, ranging from mammograms (Arodz et al 2005), mantle convection (Erlebacher et al 2002;Wang et al 2007) to postglacial rebound (Hanyk et al 2007). The main purpose of this paper is to communicate to an interested audience the need for the use of visualization in tsunami studies, both in research efforts and in educational training.…”

Section: Introductionmentioning

confidence: 99%

“…Other discussions of the use of Amira can be found in Wang et al (2007) and Hanyk et al (2007). The Amira package has been around since 1999 and has been used for many types of problems, in particular in the bio-medical field (see also Arodz et al 2005).…”

Section: Introduction To the Amira Packagementioning

confidence: 99%

Visualization of tsunami waves with Amira package

2008

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In recent years numerical investigations of tsunami wave propagation have been spurred by the magnitude 9.3 earthquake along the Andaman-Sumatra fault in December, 2004. Visualization of tsunami waves being modeled can yield a much better physical understanding about the manner of wave propagation over realistic seafloor bathymetries. In this paper we will review the basic physics of tsunami wave propagation and illustrate how these waves can be visualized with the Amira visualization package. We have employed both the linear and nonlinear versions of the shallow-water wave equation. We will give various examples illustrating how the files can be loaded by Amira, how the wave-heights of the tsunami waves can be portrayed and viewed with illumination from light sources and how movies can be used to facilitate physical understanding and give important information in the initial stages of wave generation from interaction with the ambient geological surroundings. We will show examples of tsunami waves being modeled in the South China Sea, Yellow Sea and southwest Pacific Ocean near the Solomon Islands. Visualization should be a part of any training program for teaching the public about the potential danger arising from tsunami waves. We propose that interactive visualization with a web-portal would be useful for understanding more complex tsunami wave behavior from solving the 3-D Navier-Stokes equation in the near field.

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Visualization of downwellings in 3-D spherical mantle convection

Cited by 7 publications

References 13 publications

Vortex Theory and Earth Dynamics

Vortex Theory and Earth Dynamics

Volume rendering visualization of 3D spherical mantle convection with an unstructured mesh

Visualization of tsunami waves with Amira package

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