Earth Strain Measurements with a Laser Interferometer
- 16 October 1970
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 170 (3955), 296-303
- https://doi.org/10.1126/science.170.3955.296
Abstract
The development of the laser as a source of coherent optical radiation has permitted the application of interferometric techniques to the problem of earth strain measurement. By use of this technology, an 800-meter laser strain meter has been developed which operates above the surface of the ground. The instrument has a strain least count of 10-10, requires no calibration, and has a flat and linear response from zero frequency to 1 megahertz. The linearity and large dynamic range of the laser strain meter offer unprecedented versatility in the recording of seismic strains associated with earthquakes and nuclear blasts. The extremely wide bandwidth opens new areas of the strain spectrum to investigation.Keywords
This publication has 6 references indexed in Scilit:
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- A linear strain seismograph*Bulletin of the Seismological Society of America, 1935