Earthquakes
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Earthquakes
See also geology.
an earthquake occurring at very deep levels of the earth.
the slow upward and downward motion of the earth’s crust. — bradyseismic, adj.
any major disaster, as an earthquake, flood, etc. See also water. — cataclysmal, adj.
a line drawn about an epicenter through all points affected by the same seismic shock. — coseismic, adj.
a point on the earth’s surface directly above the true center of the seismic disturbance from which the shock waves of an earthquake seem to radiate.
a major earthquake. — macroseismic, adj.
a violent earthquake. — megaseismic, adj.
an almost imperceptible earth tremor caused by a violent sea storm or an earthquake and detected only by a microseismometer. — microseismic, adj.
the intensity, frequency, and distribution of earthquakes in a specific area.
an earthquake. — seismic, adj.
the record of an earthquake’s vibrations and intensity made by a seismograph.
any of various devices for measuring and recording the vibrations and intensities of earthquakes. — seismographer, n. — seismographic, seismographical, adj.
1. the scientific measuring and recording of the shock and vibrations of earthquakes.
2. seismology.
2. seismology.
the branch of geology that studies earthquakes and their effects. Also seismography. — seismologist, n. — seismologic, seismological, adj.
a special seismograph equipped to measure the actual movement of the ground. — seismometry, n. — seismometric, adj.
an earthquake that occurs in a part of the world far away from a recording station. — teleseismic, adj.
an instrument for detecting or measuring very slight earth tremors.
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