seis·mo·graph (s z m -gr f )n. An instrument for automatically detecting and recording the intensity, direction, and duration of a movement of the ground, especially of an earthquake. seis·mog ra·pher (sz-m gr-fr) n.seis mo·graphic (-grf k), seismo·graphi·cal (--kl) adj.seis·mog ra·phy n. |
seismograph [ˈsaɪzməˌgrɑːf -ˌgræf]
n
(Earth Sciences / Geological Science) an instrument that registers and records the features of earthquakes. A seismogram (ˈsaɪzməˌgræm) is the record from such an instrument Also called seismometer
seismographic [ˌsaɪzməˈgræfɪk] adj
seismographer [saɪzˈmɒgrəfə] n
seismography n
| seismograph (szm-grf) 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. |
seismograph
an instrument for measuring and recording the intensity of earth tremors.
See also: Instrumentsany of various devices for measuring and recording the vibrations and intensities of earthquakes. — seismographer, n. — seismographic, seismographical, adj.
See also: Earthquakes
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  seismograph - a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something |
Translations
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