The unit is a horizontal beam seismograph that is designed to continuously record vertical changes in ground movement. The seismogram below is refreshed once every five minutes. The seismogram above ...

This record made by the seismograph is called a seismogram. When you look at a seismogram, there will be wiggly lines all across it. These are all the seismic waves that the seismograph has recorded.

This seismogram shows a 24-hour record of how much the ground moves at Weston Observatory in Weston, Massachusetts. Viewing other seismic stations will show you how much the ground moves in those ...

The abrupt motion of the rock causes its seismic signal to appear abruptly on a seismogram. Even though the way they are produced is different, seismograms produced by volcano-tectonic earthquakes ...

The scale is also logarithmic meaning "each whole number increase in magnitude represents a tenfold increase in measured amplitude as measured on a seismogram," per the U.S.G.S. You may have heard ...

At the heart of 1D seismic are well logs and the creation of a synthetic seismogram (or simply synthetic) for seismic event identification and depth conversion [146]. If a vertical seismic profile is ...

You may choose to show a close-up of a record (seismogram) for a single earthquake event, and ask your students to point out different seismic waves. In addition, shear waves cause much more ...

An investigation has been launched after a minor earthquake reading was registered in Donegal last night. Many people heard ...

Officials have confirmed a small tremor took place in County Donegal after a teacher recorded seismic activity on his ...

“Each whole number increase in magnitude represents a tenfold increase in measured amplitude as measured on a seismogram,” according to the U.S Geological Survey. Experts say there’s about ...

A teacher in County Donegal has made an appeal to see if anyone felt a small earthquake near Ballybofey on Thursday evening.