news
Science Magazine
Science Magazine Cover
Caltech Press Release
CNN.com
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simulation by Vala Hjorleifsdottir
Jeroen Tromp Lab

visualization by Santiago V. Lombeyda
cacr
  data size
22118408 bytes per frame
(uncompressed binary without grid)
1200 frames
~= 26GB

process
1) resample to uniform grid
2) apply color transform
3) blend with globe texture
4) ray trace
5) annotate

resources
texture: NASA's Blue Marble
stations: IRIS

tools
resampling: simple splatting (custom sw)
ray tracing: povray
annotation: Adobe Photoshop and ImageMagick

Snapshot from a spectral-element simulation of the Great 2004 Sumatra- Andaman earthquake. Shown is the vertical component of velocity 15.8 minutes after the initiation of the rupture. Red colors denote upward motion and blue colors denote downward motion. Stations in the Global Seismographic Network are denoted by the yellow triangles. The yellow seismogram shows the actual-size vertical component of displacement at GSN station PALK. The graphics were prepared by Santiago Lombeyda (Caltech Center for Advanced Computing Research), Vala Hjorleifsdottir (Caltech Seismological Laboratory), and Richard Aster (New Mexico Tech). The simulation was performed on the Caltech Division of Geological & Planetary Sciences Dell cluster.
The Great Sumatra-Andaman Earthquake COVER Spectral-element simulation of surface ground velocities (red up, blue down) 15.8 minutes after rupture initiation of the great 2004 Sumatra-Andaman earthquake. Seismogram shows 160 minutes of actual-amplitude vertical ground displacement recorded at Pallekele, Sri Lanka. See page 1127. [Image: S. Lombeyda, Caltech Center for Advanced Computing Research; V. Hjorleifsdottir and J. Tromp, Caltech Seismological Laboratory; R. Aster]
people
vala hjorleifsdottir
santiago v lombeyda
jeroen tromp
richard aster