The Searchable Product Depository (SPUD) is the IRIS DMC's primary data
product management system. Complementing the DMC's SEED and assembled
data archives, which contain time series recordings, the SPUD system
primarily contains derivative data products of other types (images,
movies, etc.) created either at the DMC or by members of the community.
For users SPUD is the query and access point for these products. The
web interfaces allow users to search for products using customized queries
across product and event details. Users can search across all product
types at once or within specific product types. SPUD also has web service
interfaces for programmatic discovery and access to the data products.
If any products from SPUD are used in your research please be sure to cite
the identified author of the product and the IRIS DMS
[Citation Information].
About Ground Motion Visualization Products
The Ground Motion Visualization (GMV) illustrates how seismic waves travel
away from the earthquake location by depicting the recorded wave amplitudes at each
seismic station location using colored symbols. For more information on
GMVs visit the
GMV product page.
Two types of GMVs are produced:
Vertical-component GMV:
Produced for US events of magnitude 5.5 or larger and global events of magnitude
6 or larger. The symbol colors represent the amplitude of the vertical ground motion,
as detected by the station's seismometer.
3-Component GMV:
Produced only for events with magnitude 7 and larger use 'tailed' symbols to show
direction and amplitude of the normalized horizontal motion. Symbol colors also
represent the amplitude of the vertical ground motion, as detected by the station's
seismometer.
This product is automatically generated without human review.
GMV Query Help
This page queries for
GMV products.
Click on row in query results to view item detail.
Column headings control sort order of results.
Use map to constrain latitude and longitude.
Max and min latitude and longitude can be entered in the corresponding text fields.
Markers on map can be clicked for details and will link to item detail page.
Start and end dates are specified by clicking on date entry fields to enable date selector.
Or use popup calendar to select date by clicking on calendar icon next to date fields.
Min and max magnitude and depth are controlled via sliders. Once slider is selected,
move by dragging with mouse or use arrow keys.
Clear button removes all selection criteria
Download button will return a zip file containing all items matching current
criteria or only selected items (if any are selected via leftmost column)
There is a product specific limit to the number of items that can be downloaded at one time.
Citing Ground Motion Visualization Products
If you use GMVs in publications, please cite according to the instructions at:
— Chuck Ammon, Professor of Geosciences at Penn State’s original concept and visualizations.
Read more
— Bob Woodward at IRIS - adapted the visualization code to MATLAB
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