Seismometer

Kinemetric seismograph.

A seismometer is an instrument that responds to ground displacement and shaking such as caused by quakes, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to form a seismograph.[1] The output of such a device—formerly recorded on paper (see picture) or film, now recorded and processed digitally—is a seismogram. Such data is used to locate and characterize earthquakes, and to study the internal structure of Earth.

  1. ^ Agnew, Duncan Carr (2003). "Ch. 1: History of Seismology". International Handbook of Earthquake & Engineering Seismology. Vol. Part A. pp. 3–11. ISBN 978-0-12-440652-0. LCCN 2002103787.