Seismic array classified until the 1990s. Today they become part of the IMS as primary or auxiliary stations. Seismic arrays are not only used to monitor earthquakes and nuclear tests, but also used as a tool for investigating nature and source regions of microseisms as well as locating and tracking volcanic tremor and analyzing complex seismic wave-field properties in volcanic areas. Seismic arrays can be classified by size, which is defined by the array's aperture given by the largest distance between the single seismometers. The sensors in a seismic array are arranged in different geometry patterns horizontally. The arrays built in 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