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11:01 a.m.-12:10 p.m., September 11, 2001: Five Shocks Occur at Ground Zero, according to Seismological Data

The seismic record at Palisades, NY, 34 km north of the World Trade Center.The seismic record at Palisades, NY, 34 km north of the World Trade Center. [Source: Lamont-Doherty Earth Observatory] (click image to enlarge)According to a seismographical study conducted by Columbia University’s Lamont-Doherty Earth Observatory in Palisades, New York, five distinct shocks occur at the World Trade Center site. They occur at 11:01 a.m., 11:15 a.m., 11:29 a.m., 12:07 p.m., and 12:10 p.m. According to the study, the five resulting seismic signals “may have been generated by additional collapses.” [Earth Institute at Columbia University, 11/16/2001; Kim et al., 11/20/2001 pdf file]

Entity Tags: Lamont-Doherty Earth Observatory

Timeline Tags: Complete 911 Timeline


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