Response Spectra Station: Polly Butte 2 Station Owner: California Institute of Technology Station Latitude & Longitude: 33.6871, -116.9238 Earthquake: Calipatria Earthquake of 05 Jun 2021 Hypocentral Distance: 134.3 km Processing Info: CGS (Use the back button on your browser to return to the previous page)  Reconfigure Plots: % Damping 5 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: Up Free field  PGA: 0.56 cm/s/s        standard    Component: 360 Free field  PGA: 1.51 cm/s/s        standard    Component: 90 Free field  PGA: 1.03 cm/s/s        standard   Home + Login + Download + About Us + Contact Earthquakes + stations + Search + Map + Advanced Search