Measuring the size of an earthquake
Earthquake Information Bulletin (USGS)
By: William Spence, Stuart A. Sipkin, and George L. Choy
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Abstract
Today, state-of-the-art seismic systems transmit data from the seismograph via telephone line and satellite directly to a central digital computer. A preliminary location, depth-of-focus, and magnitude can now be obtained within minutes of onset of an earthquake. The only limiting factor is how long the seismic waves take to travel from the epicenter to the stations--usually less than 10 minutes.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Measuring the size of an earthquake |
| Series title | Earthquake Information Bulletin (USGS) |
| Volume | 21 |
| Issue | 1 |
| Year Published | 1989 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 6 p. |
| First page | 58 |
| Last page | 63 |
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