Seismic magnitude scales the 1989 Loma Prieta earthquake, the Marina district of San Francisco was one of the most damaged areas, though it was nearly 100 km from the epicenter. Geological structures were also significant, such as where seismic waves passing under the south end of San Francisco Bay reflected off the base of the Earth's crust towards San Francisco and Oakland. A similar effect channeled seismic waves between the other major faults in the area. An earthquake radiates energy in the form of different kinds of seismic waves, whose characteristics reflect the nature of both the rupture and the earth's crust the
Seismic Productions Seismic Productions Seismic Productions is a Los Angeles based creative marketing company that creates trailers, television spots, and other marketing tools for the entertainment industry. Seismic Productions was founded in 1989 under the co-ownership of David Schneiderman and Kevin Sewelson. Schneiderman initially began his career at J. Walter Thompson advertising agency in New York before moving out west to work for Disney in 1986. In 1998, Erin Wyatt joined the company, and after a few years was working as an editor. In 2010, Wyatt was made a partner, and in 2011 Sewelson exited Seismic, leaving Schneiderman and Wyatt as the