Summary
x, y, and z components of the relative displacement of the crustal movement, u, v, and w in the Osakayama Tunnel have been obtained by combinations of ∂v/∂x and ∂u/∂y observed by rotationmeters, ∂u/∂x, ∂v/∂y and ∂w/∂z by extensometers, and ∂w/∂x and ∂w/∂y by tiltmeters. Then, main strain and torational strains have been calculated. Another component of the rotationmeter to observe ∂w/∂x has been devised. Subtracting the value ∂w/∂x, observed by the rotationmeter, from the value, observed by the tiltmeter, the deflection of the vertical has been separated. Let u, v, and w be x, y, and z components of the displacement by the crustal movement, respectively. These components are written as follows:
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References
Ozawa, I.: New types of highly sensitive strainmeter — H — 70 extensometer, and R-70 type rotationmeter. Special Contributions of the Geophysical Institute, Kyoto University, 10, 137, 1970.
Ozawa, I.: Observations of crustal movements by means of extensometers, rotationmeters, and tiltmeters. J. of the Geod. Soc. of Japan, 23, 261, 1977.
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© 1979 Springer Fachmedien Wiesbaden
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Ozawa, I. (1979). Combined Observation by Means of Extensometer, Rotationmeters, and Tiltmeters. In: Vogel, A. (eds) Terrestrial and Space Techniques in Earthquake Prediction Research. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-322-86323-2_35
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DOI: https://doi.org/10.1007/978-3-322-86323-2_35
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
Print ISBN: 978-3-528-08406-6
Online ISBN: 978-3-322-86323-2
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