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Slab2 - A Comprehensive Subduction Zone Geometry Model, Cascadia Region


Publication Date
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Hayes, G., 2018, Slab2 - A Comprehensive Subduction Zone Geometry Model: U.S. Geological Survey data release,


Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail.


Attached Files

Click on title to download individual files attached to this item.
“Cascadia slab depth contours (text)”
137.14 KB text/plain
“Cascadia slab depth grid”
93.29 KB application/x-hdf
“Cascadia slab depth text file”
2.35 MB chemical/x-xyz
“Cascadia slab dip grid”
95.77 KB application/x-hdf
“Cascadia slab strike text file”
2.32 MB chemical/x-xyz
“Cascadia slab strike grid”
92.11 KB application/x-hdf
“Cascadia slab dip text file”
2.32 MB chemical/x-xyz
“Cascadia slab thickness grid”
74.7 KB application/x-hdf
“Cascadia slab thickness text file”
2.32 MB chemical/x-xyz
“Cascadia slab depth uncertainty grid”
93.31 KB application/x-hdf
“Cascadia slab depth uncertainty text file”
2.32 MB chemical/x-xyz
“Cascadia slab model clipping mask”
2.67 KB text/csv
“Cascadia slab model ArcGIS ShapeFiles”
140.31 KB application/zip


Description of the three dimensional geometries of global subducted slabs, Cascadia Region.

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