Response Spectra Station: Eureka, CA - Middle Channel Bridge Station Owner: California Strong Motion Instrumentation Program Station Latitude & Longitude: 40.8140, -124.1580 Earthquake: Petrolia Earthquake of 18 Mar 2020 Hypocentral Distance: 64.3 km Processing Info: CGS (Use the back button on your browser to return to the previous page)  Reconfigure Plots: % Damping 0251020 Accleration Units cm/s/s g Max Period (sec) Scale Factor for Data Overlay response spectrum:   None   UBC 1997 Help   Ca   Cv   IBC 2000   or    Ground-motion Help   SDS   SD1   Generic design spectrum Help   Max   Ca   T1   T2   T3  Component: 0 Pier M-5: Deck Level  PGA: cm/s/s        standard   Home + Login + Download + About Us + Contact Earthquakes + stations + Search + Map + Advanced Search