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The Depth of Earthquakes
This map of world seismicity illustrates earthquake data for the years 1991 through 1996. It is intended to provide a sense of the depth distribution of earthquakes. Plate boundaries are shown, along with diffuse regions of seismicity, such as in central Asia, and earthquake locations are color-coded to indicate the depths at which they occurred. In addition to the map, selected cross-sections of subduction zones in South America, Tonga, Japan, and the Aleutian Islands are provided. They feature a map showing the orientation of the cross-section and graphs illustrating distribution of earthquake depth versus longitude and number of earthquakes.
Intended for grade levels:
  • Middle (6-8)
  • High (9-12)
  • College (13-14)
Type of resource:
  • Visual:
    • Illustration - scientific
    • Map
  • Dataset:
    • Modeled
  • Geological Sciences:
    • Geology
    • Geophysics
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright 1995-2005, The Regents of the University of California.
DLESE Catalog ID: DLESE-000-000-009-815
Resource contact / Creator / Publisher:
Publisher: University of California Berkeley
Berkeley Seismological Laboratory