Definition of seismograph in English:



  • An instrument that measures and records details of earthquakes, such as force and duration.

    • ‘A series of digital seismographs around the volcano provide a continuous stream of data to the observatory in Goma.’
    • ‘A series of digital seismographs installed around the volcano provide a continuous stream of data to the observatory.’
    • ‘Richter, who worked in southern California, using data from seismographs - which measure earth movement - devised a method to calculate where an earthquake began, or its epicenter, and its magnitude.’
    • ‘Traditional seismographs record straight-line movements, for example shaking, whereas ring lasers measure rotational movements like rolling or twisting.’
    • ‘All told, 1,200 seismographs - including 800 borrowed from the United States - are being used in the $423,000 project.’
    • ‘Old-style seismographs recorded the jiggling of an earthquake on a rotating drum.’
    • ‘Later, earthquake seismographs were developed that recorded digitally, and today virtually all modern seismic recordings are digital and thus involve some sort of signal processing.’
    • ‘Aftershocks continued for several years, and small earthquakes still waggle seismographs in the region.’
    • ‘Eventually the parties agreed on a strict monitoring plan relying on seismographs and strain gauges to assess the effect on the structure as crews installed the caissons.’
    • ‘What comes out of the laboratory and what is measured in the real world by surface seismographs leaves a gap.’
    • ‘Tremors had been recorded in 1908 on a seismograph 4,000 kilometers west of St. Petersburg.’
    • ‘The seismographs recorded the waves from that earthquake and from magnitude 2.1 and 2.8 earthquakes beneath the Cascade Mountains, even though the shaking was too small to be felt by residents.’
    • ‘A seismograph at Ferris High School showed the trembling lasted for more than 30 seconds with two distinct spikes in intensity.’
    • ‘The observatory contained a seismograph to record mining tremors, an evaporation pan and a device to record lightening strikes which are particularly virulent on the Witwatersrand.’
    • ‘Each country affected by the disaster is to set up a tsunami warning centre to receive information from the pressure gauges, seismographs and wave sensors that will survey the ocean basin.’
    • ‘This is similar to seismologists using seismographs on Earth to detect earthquakes.’
    • ‘Just as a scientist reads a seismograph to measure movements in the ground, the character of a government can be judged by the way it treats the most disadvantaged layers of society.’
    • ‘With more earthquakes, more and better seismographs recording quakes, and more comprehensive compilations of seismic data, seismologists are sharpening their view of the African plume.’
    • ‘Since there were no seismographs operating in Alaska at that time and no reports of surface faulting in the remote Alaska Range, the location of the 1912 shock is poorly known.’
    • ‘Noaa would record the earthquake on seismographs and issue bulletins about the progress of a tsunami.’