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--></style></head><body bgcolor=white lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Dear CEUS list subscribers,<o:p></o:p></p><p class=MsoNormal>On behalf of Alan Yong at the USGS, I would like to inform you that the USGS has released a <i><span style='color:#262626'>V<sub>S</sub></span></i><sub><span style='color:#262626'>30</span></sub> database for sites across the United States.<i><span style='color:#262626'> V<sub>S</sub></span></i><sub><span style='color:#262626'>30</span></sub><span style='color:#262626'>, the time-averaged shear-wave velocity (<i>V<sub>S</sub></i>) in the upper 30 meters, is a key index adopted by the earthquake engineering community to account for seismic site conditions. The USGS has compiled measured <i>V<sub>S</sub></i><sub>30</sub> funded by the USGS and other governmental agencies for 2997 sites in the United States. The compilation is expected to expand as new and additional information are available. You may find the database and supporting information here: http://earthquake.usgs.gov/research/vs30/</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If you have questions or know of additional data that should be considered for the database, please contact Alan Yong (<a href="mailto:yong@usgs.gov)">yong@usgs.gov)</a>.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Oliver<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.5pt;color:black'>-- <o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.5pt;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;color:black'>Oliver Boyd, Ph.D.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;color:black'>Research Geophysicist<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;color:black'>U.S. Geological Survey<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;color:black'>1711 Illinois St.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;color:black'>Golden, CO<o:p></o:p></span></p></div></div></body></html>