During an earthquake, the base moves and the mass does not. seismograph. Seismometer definition, a seismograph equipped for measuring the direction, intensity, and duration of earthquakes by measuring the actual movement of the ground. Rayleigh waves are the slowest of all the seismic wave types and in some ways the most complicated.
The motion of the base with respect to the mass is commonly transformed into an electrical voltage. A seismograph, or seismometer, is an instrument used to detect and record earthquakes. The motion of the base with respect to the mass is commonly transformed into an electrical voltage. Generally, a seismograph consists of a mass attached to a fixed base.
Sensitive seismographs, which greatly magnify these ground motions, can detect strong earthquakes from sources anywhere in the world. The record written by a seismograph in response to ground motions produced by an earthquake or other ground-motion sources is called Seismographs record a zig-zag trace that shows the varying amplitude of ground oscillations beneath the instrument. Love waves and Rayleigh waves are surface waves. Seismograms typically record motions in three cartesian axes (x, y, and z), with the z axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface. The time, locations, and magnitude of an earthquake can be determined from the data recorded by seismograph stations. Definition: A device to detect earthquakes. The output of such a device—formerly recorded on paper (see picture) or film, now recorded and processed digitally—is a seismogram.
Animation of the principles of a drum-style horizontal seismograph station that records back- and-forth (N–S, E–W) movement. Magnitude is determined using the logarithm of the amplitude (height) of the largest seismic wave calibrated to a scale by a seismograph. seismoscope. A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. The motion of the base with respect to the mass is commonly transformed into an electrical voltage. A seismometer measures the movements of the Earth.
Seismic waves are propagating vibrations that carry energy from the source of an earthquake outward in all directions. A seismograph, or seismometer, is an instrument used to detect and record seismic waves.