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Allen McNamara's Educational and Research Images and Movies

Please feel free to use this material in lectures or talks
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How the images and movies are made
This page is always under construction. More material will be added and better organized with time.
Note: A few of the mpeg movies may be choppy with quicktime player. They all work well with Windows Media Player.
Categories
Some movies and images from recent research
Mpeg movies of spherical harmonics
My course packs that teach C programming to a beginner
Mantle Convection Tutorial: effect of temperature- and depth- dependent rheology, Rayleigh number, and internal heating
Mantle Convection Tutorial: Thermochemical convection

Some movies and images from recent research


Mantle Plumes with Tracers

This movie is from a CitcomCU calculation with deformation tracking tracers. The calculation employs an Earth-like convective vigor and temperature- and depth-dependent rheology [10,000x viscosity contrast due to temperature and a stepwise viscosity increase at the transition zone]. The calculation was performed in parallel, on 32 processors.

Tracers, represented as black balls, were intially placed randomly in the lowermost 100 km of the mantle. The movie tracks these tracers as they are swept into flow caused by upwelling mantle plumes.

5.8 MB mpeg movie

Images of Thermochemical Piles (click images for higher resolution figures)

Thermochemical piles predicted for a 255 km intrinsically more-dense layer after the past 120 million years of plate motions have been employed. Dense material shown as gold. Thermochemical piles predicted for a 255 km intrinsically more-dense layer after the past 120 million years of plate motions have been employed. Dense material is shown as transparent while. Taken from McNamara and Zhong (2005). Temperature field from a high-resolution 2D calculation with primordial thermochemical piles. The piles are very hot (red). Thermochemical piles generated by the segregation of oceanic crust. Temperature is shown as color and composition is shown as darkness (the darker the material, the more dense it is).

3D Mantle Convection with Earth-like vigor and temperature- and depth- dependent rheology

Perspective 1

Plumes and downwellings

Perspective 2

Plumes and downwellings

Perspective 3

Plumes with their tops removed

Perspective 4

Plumes only

(12.7 MB mpeg movie) (9.4 MB mpeg movie) (7.9 MB mpeg movie) (6.4 MB mpeg movie)
(snapshot image) (snapshot image) (snapshot image) (snapshot image)


2D Mantle Convection studes investigating lower mantle strain patterns

These are movies generated from 2D Citcom calculations that examine strain patterns in the lower mantle. Strain tracers exist throughout the entire mantle; however they are "activated" under certain conditions. In each movie, strain lines are in the direction of maximum stretch and the length is proportional to the magnitude of maximum stretch. Strain is activated in slab regions below the transition zone Strain is activated in slab regions below the transition zone Strain is activated in slabs in the D'' region (post-perovskite?) Strain is activated in slabs in the D'' region (post-perovskite?)
MPEG MOVIE (4.2 MB) MPEG MOVIE (0.8 MB) MPEG MOVIE (2.2 MB) MPEG MOVIE (1.0 MB)


Course Packs from the Beginning of my Numerical Methods Course That Should Get a Beginner Up and Running Quickly with C programming

course pack 1 (pdf) course pack 2 (pdf) course pack 3 (pdf) course pack 4 (pdf) course pack 5 (pdf) course pack 6 (pdf)

Mantle Convection Tutorial: Effect of temperature-dependent rheology, depth-dependent rheology, Rayleigh number, and internal heating [Many MPEG Movies]


Mantle Convection Tutorial: Thermochemical Convection [Many MPEG Movies]