IRIS EMC Horizontal Slice Viewer 

The IRIS EMC Horizontal Slice Viewer plots a horizontal slice of the selected Earth model at a given depth. The quantity displayed (absolute velocity or percent velocity perturbation) depends on the selected model. Users may further refine the plot on their own computer by downloading the associated Generic Mapping Tools (GMT) bundle. The bundle download links appear under the image once the processing is complete.

Users also have the option of additing the following auxiliary data to the map by checking the corresponding menu boxes:
    N largest events ("N" defined by user) from the IRIS database (service.iris.edu/fdsnws/event/1/).
   Events are located between the selected depth and halfway to the depths above and below.
    N largest global CMT solutions ("N" defined by user) from the IRIS database (www.iris.edu/spud/momenttensor).
   Events are located between the selected depth and halfway to the depths above and below.
   shear-wave splitting from the Shear-Wave Splitting Database (www.gm.univ-montp2.fr/splitting/DB)
   Slab1.0, a three-dimensional compilation of global subduction geometries, separated into regional models for each major subduction zone.
  Hayes, G. P., D. J. Wald, and R. L. Johnson (2012), Slab1.0: A three-dimensional model of global subduction zone geometries,
      J. Geophys. Res., 117, B01302, doi:10.1029/2011JB008524.

   The contours, if present, represent depth to slab at 20 km increments (earthquake.usgs.gov/research/data/slab)
   plate boundaries based on the information available from www.ig.utexas.edu/research/projects/plates
   volcano locations based on www.ngdc.noaa.gov/hazard

Note 1: Use the companion interactive Google Map to select the region of interest and also see the extent of the selected model.
Note 2: There is a know issue with the geographic boxes that cross the prime meridian!

 
Earth model 
lock settings (to avoid loading default settings when a different model is selected)
model     
depth   
  title 
Area
Asia | Africa | America | Australasia | Europe | Japan | N. America | S. America | US | World
Note: use the & markers on the map to set the region of interest
Lower-Left (L) latitude longitude
Upper-Right (U) latitude longitude
grid lines interval  ° annotation interval °
Options
extreme colors: [◙ < min.   > max.  no value]    saturate min./max. colors
section color palette  invert colors   label 
    annotation   map width  inch

                          

largest events !
 
largest gCMTs!
  shear-wave
splitting !
  Slab1.0 & plate
boundaries !
  volcano
locations !
       
Controls
 Notes • images will be removed after 7 days •  area covered by the selected model is shown in green • move the map markers to set the corresponding latitude and longitude values of the above form