To learn about exploring and comparing tomography grids using the GEON IDV, see

Using the GEON IDV to Explore Seismic Tomography

Using the NetCDF Data Format for Seismic Tomography

To learn about exploring and comparing tomography, using the GEON IDV and the NetCDF data format, see

Using the GEON IDV to explore seismic tomography

Using the NetCDF data format for seismic tomography

Reference Earth Model (REM) Seismic Tomography data files.

The surface 3D relief has been moved down to show the cross-section.

Geology map of Yellowstone National Park (in TIF format)
provided by: Robert L. Christiansen. See U.S. Geological Survey Professional Paper 729-G, "The Quaternary and Pliocene Yellowstone Plateau Volcanic Field of Wyoming, Idaho, and Montana," (http://pubs.usgs.gov/pp/pp729g/).

Learn more about TIF Images and TIF over Topography in 3D relief in the GEON IDV.

Learn about JPEG Images mapped with latitide and longitude.

Any image can be displayed in the IDV if you know the lat/long of the corners, either as a flat image at any level, or drapped over surface (or other) elevation data.

Geological cross sections, or any vertical image such as seismic refelction lines, can be put in IDV displays in correct spatial and vertical location. See Display vertucal images.

  See how to get and work with

Topography in the IDV

Click on image for full size

GSRM Strain (second invariant strain rate) by Kreemer, C, A.J. Haines, W.E. Holt, G. Blewitt, and D. Lavalé, and plate motion vectors relative to Europe.

for data see Data online - GSRM strain, and plate velocities

You can plot the location of volcanos and this week's earthquakes using the main menu commands
"Displays -> Locations -> Earth -> Earthquakes" and
"Displays -> Locations -> Earth -> Volcanos." Display controls let you change point symbols, colors, and plot density (cluttering) as usual. The earthquake lable lists magnitude; in the display control's "Locations" tab you can see depths listed, and in the "Selected" tab panel you can see more data about an earthquake including a web link to the USGS Earthquake Center data page for that event.

The volcano data is from the Smithsonian Global Volcanism Progam, http://www.volcano.si.edu. In the display control's "Locations" tab you can see all numerical data, and in the "Selected" tab panel you can read all about a volcano, including a photograph.

The sample image to the left (click for full size) also has the JPL "Blue Marble" earthsurface image (see next).

You can select and display many data sets available online via WMS web map servers. In the Dashboard "Data Chooser" select "catalogs" and enter
http://www.unidata.ucar.edu/georesources/idvcatalog.xml
Explore the many choices got by clicking "Web Map Servers." There are the JPL "Blue Marble" composite cloud-free earth ssurface image, today's images from NASA TERRA and AQUA satellites (from JPL), shaded topography images of many resolutions, named thermal feature locations, and much more.

Hold the mouse pointer over any catalog item to see a very complete description about the data, in most cases.

You can adjust transparency of any image display with the display control's "Transparency" slider.

One advantage of using data from a WMS is that the data resolution increases as you zoom in.

If the catalog display list gets confused, reenter the catalog's URL.

The sample image to the left (click for full size) has a shaded and colored topography image plus a rivers image.

US Anisotropy

Average station anisotropy observations (198 obs), compiled by G Waite.

URL of data for GEON IDV use: http://geon.unavco.org/unavco/anisotropy/Waite_WesternUS_anisotropy.nc

Yellowstone National Park area by G Waite and others (47 obs):

URL of data for GEON IDV use: http://geon.unavco.org/unavco/anisotropy/Waite_et_al_anisotropic_Yellowstone_Table3.nc

Data publication:
Gregory P. Waite, Derek L. Schutt, Robert B. Smith, and Eugene D. Humphreys, "Models of lithospheric and asthenosphere anisotropic structure of the Yellowstone hotspot from shear wave splitting", J. Geophys. Res., 110, 2005, B11304, doi:10.1029/2004JB003501; Table 3.

---

Provisional global compilation of shear wave anisotropy by Matthew Fouche (1358 observations);
Note: this will be updated soon

URL of data for GEON IDV use: http://geon.unavco.org/unavco/anisotropy/ASU_UpperMantleAnisotropy_db.nc

Data publication: http://geophysics.asu.edu/anisotropy/upper/

Grid of mantle temperatures provided by:
Allen K. McNamara, Arizona State University (see Allen K. McNamara and Shijie Zhong, "Thermochemical structures beneath Africa and the Pacific Ocean," Nature 437, 1136-1139 (20 October 2005), doi: 10.1038/nature04066)

Data for this display is on the UNAVCO geon server catalog at http://geon.unavco.org/opendap/nph-dods/data/geomodel/MantleTemperature.nc

Raypath data (synthetic -- only to show data format and sample display):
URL: http:geon.unavco.org/unavco/raypath/raypath_P_wave_30deg_p3.nc

Global Digital map of Sediment by Gabi Laske and Guy Masters
See http://mahi.ucsd.edu/Gabi/sediment.html

Data for this global sediment model is available here in netCDF format for the IDV.
URL: http://geon.unavco.org/unavco/sedmap/Global_sedmap_1deg.nc (3 MB)
Click on the top image to the left to see the larger size view.

More sample displays are at the same URL as the figure to the left, with filenames sedmap_rho2.jpg sedmap_thk2.jpg sedmap_vp2.jpg sedmap_vs2.jpg sedmap_rho3.jpg sedmap_thk3.jpg sedmap_vp3.jpg sedmap_vs3.jpg sedmap_rho1.jpg sedmap_thk1.jpg sedmap_vp1.jpg and sedmap_vs1.jpg

---

CRUST 2.0 A New Global Crustal Model at 2x2 Degrees Gabi Laske, Guy Masters and Christine Reif

This is a global data set of 7 crustal layers each with thickness, Vp, Vs, and density. Upper mantle Vp, Vs and density are also given, plus depth to the Moho.
See http://mahi.ucsd.edu/Gabi/rem.dir/crust/crust2.html

Data for this model is available here in netCDF format for the IDV.
Data URL: http://geon.unavco.org/unavco/crust/CRUST2.nc
Click on the middle image to the left to see the larger size view.

---

Cornell U.S. Moho depth from compiled results (US_MOHO_EQ)
See http://discoverourearth.org/geoid/metadata/htmls/image_grid/us_moho_eq.html

Data for this model is available here in netCDF format for the IDV.
Data URL: http://geon.unavco.org/unavco/crust/usmoho1.nc
Click on the bottom image to the left to see the larger size view.

---

Cornell U.S. Moho basement depth from compiled results (USBASMDD_INT)
See http://discoverourearth.org/geoid/metadata/htmls/image_grid/us_basm.html

Data for this model is available here in netCDF format for the IDV.
Data URL: http://geon.unavco.org/unavco/crust/usbasm1.nc

DGRAV North American Bouger Gravity Anomaly Grid
created by National Geophysical Data Center (NGDC). This is a 2.5 minute resolution lat/lon grid, interpolated from the "DNAG" 6km grid.

Data publication: http://www.ngdc.noaa.gov/seg/cdroms/grav99v1/document/html/dgrav.htm

Data for the GEON IDV:
URL: http://geon.unavco.org/unavco/gravity/DGRAV.nc (31 MB)
Catalog: http://geon.unavco.org/unavco/catalog.xml

Click on images to the left to see U.S. Bouguer gravity anomalies

Sample data:
Sample NetCDF file particle (point) file with 100 time steps
URL: href="http://geon.unavco.org/unavco/AVO/volcano_plume.nc
NetCDF topography of Alaskan 4 min res topography:
URL: http://geon.unavco.org/unavco/TOPO/alaska_4min_topography.nc
Bundle file for a display using the same data.

You can plot GIS "shape files" (.shp), with data for lines, in the IDV. (The IDV does not yet handle the associated .dbf files for labels.)

The sample display shows rivers and streams around Yellowstone National Park, and color topography data too.

Get NetCDF data files:
major US rivers (http://geon.unavco.org/unavco/gis/rs14fe02.shp) (15 megabytes!)
all US rivers and larger streams (http://geon.unavco.org/unavco/gis/rv14fe02.shp) (83 megabytes!!)
lakes (http://geon.unavco.org/unavco/gis/lk17de98.shp) (11 megabytes)

Data is from the National Weather Service Geodata catalog