Welcome to the IRIS Image Gallery - a diverse collection of photographs and visuals that encompass the range and breadth of seismology and the seismological community.
Please browse through our albums. These low and medium-resolution images can be freely used for personal and educational/academic purposes, but we request you recognize the image contributor by including in your product or presentation the credit displayed with each image.
A map showing variation of Rayleigh wave (a type of seismic surface wave) group velocity for 8 sec period vibrations derived from more than 60,000 measurements. By cross correlating up to three years of continuous data from 512 western U.S. stations, including the EarthScope USArray Transportable Array and regional seismic networks, inter-station propagation velocities for all available station pairs were recovered and inverted for regional velocity structure. Thick black lines define major tectonic province boundaries. (Image courtesy of M.P. Moschetti, M.H. Ritzwoller, and N.M. Shapiro.)
Date Taken: February 18, 2009 Photographer / Contributor: M.P. Moschetti, M.H. Ritzwoller, and N.M. Shapiro