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Some earth strain observations with a thousand meter laser interferometer

Authors
Journal
Earth and Planetary Science Letters
0012-821X
Publisher
Elsevier
Publication Date
Volume
4
Issue
6
Identifiers
DOI: 10.1016/0012-821x(68)90019-8

Abstract

Abstract A one thousand meter modified Fabry-Perot interferometer has been used to measure earth strains in an abandoned railroad tunnel at Stevens Pass, Washington. Sensitivity of the instrument at present is about 5 × 10 −12. The frequency response of the system is flat from zero to 300 cps.

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