TITLE:
Studying of Deformation Processes by Two-Coordinate Laser Strainmeter
AUTHORS:
Grigory I. Dolgikh
KEYWORDS:
Two-coordinate Laser Strainmeter; High Tides; Earthquakes; Natural Oscillations of the Earth; Natural Os-cillations of Geoblocks; Natural Oscillations of Bays; Superficial and Internal Sea Waves; Quasiperiodic Oscillations
JOURNAL NAME:
International Journal of Clean Coal and Energy,
Vol.2 No.2B,
July
24,
2013
ABSTRACT: The results of experimental
data processing of a two-coordinate laser strainmeter are discussed. The
two-coordinate laser strainmeter consists of two laser strainmeters which
measuring shoulders are oriented along the lines “North- South” and “West-East”. Measurement accuracy of the earth's crust microdisplacements
of these devices makes 0 to1 nm. Working frequency range is from 0 to 1000 Hz.
Processing experimental data the main attention is paid to high tides, natural oscillations of the Earth, natural oscillations of geoblocks, superficial sea
waves. It is established that after separate earthquakes the natural
oscillations of regional geoblocks are strongly excited. Besides, it is
revealed that quasiperiodic fluctuations of crust in the range of periods from
1 to 12 min. are caused by atmospheric processes. Besides, it is revealed that
quasiperiodic oscillations of the earth's crust in the range of periods from 1
to 12 minutes are caused by atmospheric processes.