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Seismograph



noun
1.
any of various instruments for measuring and recording the vibrations of earthquakes.
noun
1.
an instrument that registers and records the features of earthquakes. A seismogram (ˈsaɪzməˌɡræm) is the record from such an instrument Also called seismometer
seismograph
(sīz’mə-grāf’)
An instrument that detects and records vibrations and movements in the Earth, especially during an earthquake. Most seismographs employ a pendulum mounted within a rigid framework and connected to a mechanical, optical, or electromagnetic recording device. When the Earth vibrates or shakes, inertia keeps the pendulum steady with respect to the movements of the frame, producing a graphic record of the duration and intensity of the Earth’s movements. Separate instruments are needed to record the north-south horizontal, east-west horizontal, and vertical components of a tremor. By comparing the records produced by seismographs located in three or more locations across the Earth, the location and strength of an earthquake can be determined.

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  • Seismography

    [sahyz-mog-ruh-fee, sahys-] /saɪzˈmɒg rə fi, saɪs-/ noun 1. the scientific measuring and recording of the shock and vibrations of earthquakes. 2. seismology.

  • Seismol

    1. seismological. 2. seismology. seismol seismology



  • Seismologist

    noun 1. the science or study of earthquakes and their phenomena. noun 1. the branch of geology concerned with the study of earthquakes and seismic waves seismology (sīz-mŏl’ə-jē) The scientific study of earthquakes and of the internal structure of the Earth. It includes the study of the origin, geographic distribution, effects, and possible prediction of […]

  • Seismology

    noun 1. the science or study of earthquakes and their phenomena. noun 1. the branch of geology concerned with the study of earthquakes and seismic waves seismology (sīz-mŏl’ə-jē) The scientific study of earthquakes and of the internal structure of the Earth. It includes the study of the origin, geographic distribution, effects, and possible prediction of […]



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