Introduction. The links below take you to pages that contain some simple animations of the response of southern North America to an incident P wave (P-wave receiver functions).

The array includes stations installed as part of the EarthScope project as well as stations from the Caltech seismic network in southern California respectively and stations operated by the US Geological Survey (IU and US). Click here for more information on EarthScope. Click here for information on the status of the transportable array.

• Initial P-Wave Response, G = 1.0, duration: 10s


• Radial P-wave Response, G = 1.0, duration: 85 s


• Transverse P-wave Response, G = 1.0, duration: 30 s

Citation: What Can You Learn From A Million Receiver Functions?, Charles J. Ammon, American Geophysical Union Fall 2013 Meeting, San Francisco. Work performed with the support of the U.S. National Science Foundation.