VS30, the time-averaged shear-wave velocity (VS) in the upper 30 meters, is a key index adopted by the earthquake engineering community to account for seismic site conditions. USGS has compiled measured VS30 funded by the USGS and other governmental agencies for approximately 3000 sites in the United States.
VS30 Ranges (m/s)
- No value
- < 180
- > 760
Download VS30 Data (.csv format)
- Yong, A., Thompson, E.M., Wald, D., Knudsen, K.L., Odum, J.K., Stephenson, W.J., and Haefner, S., 2015, Compilation of VS30 Data for the United States: U.S. Geological Survey Data Series 978, 8 p., http://dx.doi.org/10.3133/ds978.