30 September 2010

A sequence of time-dependent global raster images (JPEG images,
generated from GMT grid files of MIT P-wave seismic tomography model of Li et. al. 2008). The dynamic
topography comes from the work of Bernhard Steinberger at NGU.  The raster
images were created by Robin Watson at NGU.

The seismic topography model is from:
Li, C., van der Hilst, R., Engdahl, E., and Burdick, S., 2008, A new global model for P wave speed 
variations in Earthís mantle: Geochem. Geophys. Geosyst, v. 9, p. 1-21.


Please note:  The age assigned to each seismic tomography slice is an ESTIMATE only.  Age estimates were assigned given an upper mantle sinking rate of 4.8 cm/year (Lithgow-Bertelloni and Richards 1998) and a lower mantle sinking rate of 1.2 cm/year (van der Meer et al, 2009).  Age is relevant for subducted material only NOT adjacent mantle.
Lithgow-Bertelloni, C., and M. Richards (1998), The dynamics of Cenozoic and Mesozoic plate motions, Reviews of Geophysics, 36(1), 27-78.
van der Meer, D., W. Spakman, D. van Hinsbergen, M. Amaru, and T. Torsvik (2009), Towards absolute plate motions constrained by lower-mantle slab remnants, Nature Geoscience.



MITP08-${age}.jpg         					A raster image (.jpg) showing
											an age-coded MIT P-wave model 
											(Li et. al. 2008) for the past 197 m.yrs

To load this sequence of images in GPlates:

1. Unzip the file dynamic-topography.zip using unzip
2. Pull down the GPlates File menu and select the operation Open Time
Dependent Global Raster Set.
3. Choose the “jpg” folder inside the “dynamic topography” folder.
                                        
Any questions, please email:           
                                        			Dietmar Muller dietmar.muller@sydney.edu.au
													Aedon Talsma aedon.talsma@gmail.com
													Maria Seton maria.seton@sydney.edu.au