How do I Make GeoWall Images from My Data?  Most common request  There are several software packages, often not free  Introducing…

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Presentation transcript:

How do I Make GeoWall Images from My Data?  Most common request  There are several software packages, often not free  Introducing…

What Is HoloDraw ?  Designed to read YOUR data  Works with GMT maps and scripts  Produces VRML images for GeoWall Web browsers (need a plug-in)

HoloDraw examples  Tomography  Hypocenters  Evaluating and refining proposed models

HoloDraw examples of “XYZA” data  “XYZ” is location of hypocenter  “A” can be some Attribute you would like to represent in color  In this case A (the color) represents the date of the quake  Colors can be assigned using a GMT Color Palette Table (.cpt file)

HoloDraw can make 3D plots of  Points point:x y z  Lines line:x y z, x y z…  Solid surfaces polygon:x y z, x y z…

From GMT to HoloDraw (Thomas et al.,2003)

How to Get Started with HoloDraw  Download from  Software runs on Unix, Mac or Windows  Web site also has copies of all images shown today, so you can download to your GeoWall

References and Credits  GeoWall - Daniel Steinwand, Brian Davis, Nathan Weeks, "GeoWall: Investigations into Low-cost Stereo Display Systems", 2002 USGS Open File Report.  GMT - Wessel, P. and W. H. F. Smith, Free software helps map and display data, EOS Trans. AGU, 72, 441, 1991  VRML specs  VRML plug-ins for your web browser Cortona Cosmo Player  Global tomography - Grand, S.P., Mantle shear-wave tomography and the fate of subducted slabs, Philosophical Transactions of the Royal Society of London Series a- Mathematical Physical and Engineering Sciences, 360 (1800), ,  Hotspot map - Thorne et al. 2003, PEPI, in press.  South Africa tomography - Fouch, M.J., D.E. James, J.C. VanDecar, S. van der Lee, and the Kaapvaal Seismic Group, Mantle seismic structure beneath southern Africa, S. African J. Geol., in press,  Japan raypaths - Bernot, C.M., and M.J. Fouch, Shear wave splitting and mantle flow beneath Japan, to be submitted to Geophys. Res. Lett.,  Hypocenters - E.R. Engdahl, Van der Hilst, R.D., and Buland, R.P., 1998, Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seism. Soc. Amer., v. 88, pp  Bouncing raypaths - Lay et al. 2003, GRL, in preparation  Ribbon plot - Thomas, C.H., Garnero, E.J, Lay, T., Highly variable topography beneath the Cocos plate from frequency-wavenumber migration of broadband S and ScS waves, in prep.,