Western U.S. Background Velocity Field

map of California with arrows showing ground movement

Detailed Description

Relief map of the western United States with the background velocity field (relative to a fixed North American plate) determined from two decades of GPS observations. Measurements have been made by numerous academic and government organizations, including the Plate Boundary Observatory and the USGS.

Details

Image Dimensions: 900 x 900

Location Taken: US

Source: