Definition of seismograph in English:



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

    • ‘Old-style seismographs recorded the jiggling of an earthquake on a rotating drum.’
    • ‘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.’
    • ‘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.’
    • ‘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.’
    • ‘A series of digital seismographs installed around the volcano provide a continuous stream of data to the observatory.’
    • ‘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.’
    • ‘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.’
    • ‘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.’
    • ‘A seismograph at Ferris High School showed the trembling lasted for more than 30 seconds with two distinct spikes in intensity.’
    • ‘A series of digital seismographs around the volcano provide a continuous stream of data to the observatory in Goma.’
    • ‘Tremors had been recorded in 1908 on a seismograph 4,000 kilometers west of St. Petersburg.’
    • ‘Aftershocks continued for several years, and small earthquakes still waggle seismographs in the region.’
    • ‘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.’
    • ‘Noaa would record the earthquake on seismographs and issue bulletins about the progress of a tsunami.’
    • ‘Traditional seismographs record straight-line movements, for example shaking, whereas ring lasers measure rotational movements like rolling or twisting.’
    • ‘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.’
    • ‘All told, 1,200 seismographs - including 800 borrowed from the United States - are being used in the $423,000 project.’
    • ‘This is similar to seismologists using seismographs on Earth to detect earthquakes.’
    • ‘What comes out of the laboratory and what is measured in the real world by surface seismographs leaves a gap.’
    • ‘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.’