Global compilation of variations in slab depth beneath arc volcanoes and implications

The location and motion of subducting plates relative to volcanic arcs provide a first‐order constraint on theories of arc magmagenesis. We compile volcano‐specific subduction parameters for 33,000 km of the global arc system at 839 volcanic centers, measuring the depth to the top of the slab ( H ) beneath each volcano. The compilation also includes estimates of slab strike and dip, incoming plate velocity, and age, all available in accompanying auxiliary material. The slab geometry is contoured from the top surface of Wadati‐Benioff zones (WBZs) for a variety of teleseismic and local seismicity catalogs, which provides a reference surface for evaluating the distribution of seismicity within subducting plates.…