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The Study of Laser Interferometer As Monitor of Crust Deformation

Author: YeChao
Tutor: LiuYun
School: Graduate Schoo,Chinese Academy of Sciences
Course: Condensed Matter Physics
Keywords: Geodetic deformation monitoring Michelson interferometer Error Analysis
CLC: P227
Type: Master's thesis
Year: 2010
Downloads: 43
Quote: 0
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Abstract


The history of mankind endure the pain of geological disasters , earth deformation monitoring is conducive to effective prevention of geological disasters . Laser strain interference system uses a highly stable frequency of gas lasers as the light source for long-term tracking and monitoring the use of the the unequal arm of the Michelson interferometer and precision electronic stripes the subdivision count system , slight deformation of the earth's crust . Has great significance for the prevention and control of geological disasters such as earthquakes . In this paper, the analysis of the causes of earthquakes , and monitoring of the earth with a high-precision interferometer . According to the characteristics of the Michelson interferometer design unequal arm Michelson interferometer for measuring small deformation . Sealed Stations structure in order to further improve the accuracy of the monitoring . Will affect the atmosphere of the refractive index of air is sealed in a temperature , pressure, humidity and constant cylinder . In addition, analysis of the various factors that might impact on the measurement accuracy , was analyzed on this basis, the various possible error .

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Geodesy > Dynamic Geodetic
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