Long-term variations recorded by extensometers

Main Article Content

P. Varga

Abstract

On the basis of stress accumulation between two large earthquakes the maximum strain rate can be estimated. But the strain rates cannot be used to estimate directly the magnitude of the tectonic processes. The estimates of stress rates and horizontal crustal movement values are bigger than the real values in nature. Due to the significant differences among stations situated in the same region it seems that secular rates are modified or increased to a considerable extent by local conditions of different type, which are not connected to tectonic activity.


Google Scholar         ARK:/88439/y092577


 

Article Details

How to Cite
Varga, P. 1984. “Long-Term Variations Recorded by Extensometers”. Journal of Geophysics 55 (1), 68-70. https://journal.geophysicsjournal.com/JofG/article/view/15.
Bookmark and Share

References

Beavan, R.J. (1976) Earth strain: ocean loading and analysis. Ph.D. Thesis, Cambridge University

Beavan, R.J., Bilham, R. (1979) Long series of strain observations from an aseismic area. EOS Trans. A.G.U. 60, 316

Benioff, M. (1959) Fused-quartz extensometer for secular tidal and seismic strains. Bull. Geol. Soc. Am. 70, 1019-1032

Berger, J., Levine, J. (1974) Spectrum of earth strain from 10-8 to 102 Hz. J. Geophys. Res. 79, 1210-1214

Berger, J., Wyatt, F. (1973) Some observations of earth strain tides in California. Philos. Trans. R. Soc. Lond. A. 274, 267-277

Bilham, R. (1973) The location of earth strain instrumentation. Philos. Trans. R. Soc. Lond. A. 274, 239-241

Bilham, R., Evans, R., King, G., Lawson, A., McKenzie, D. (1972) Earth strain tides observed in Yorkshire, England with simple wire strainmeter. Geophys. J. Astron. Soc. 29, 473-485

Butler, D., Brown, P.L. (1972) Secular strain measurements before and after the Caninikin nuclear test. Bull. Seismol. Soc. Am. 62, 1455-1458

Evans, R., Beavan, R.J., Bilham, R., King, G. (1979) A survey of earth strain tides in Great Britain. Geophys. J. R. Astron. Soc. 57, 119-135

Gerard, V.B. (1973) New Zealand Earth strain measurements. Phil. Trans. R. Soc. Lond. A. 274, 311-321

Goulty, N.R., King, G.C., Wallard, A.J. (1974) Iodine stabilized laser strainmeter. Geophys. J. Astron. Soc. 38, 377-387

Harwardt, H., Simon, D. (1974) Beobachtungen mit einem Drahtstrainmeter in der Station Tiefenort. In: 2. Internationales Symposium, Geodasie und Physik der Erde, Potsdam, Mai 1973, pp: 197-205 Veroff. ZIPE, Nr. 30, Teil I

Kasahara, K. (1981) Abnormal crustal strain change observed at Erimo before and after the Earthquake of the Nemuro Peninsula. J. Geodetic Soc. Jpn 27, 282-288

Kind, R., Emter, D. (1974) Moglichkeiten zur Messung tektonischer Deformationen. Vortrag 34. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, Berlin

Latynina, L.A. (1975) On horizontal deformations at faults recorded by extensometers. Tectonophysics 29,421-427

Latynina, L.A., Karmaleiva, R.M. (1978) Strain measurements, Moscow: Nauka (in Russian)

Nishimura, E., Kishimoto, J., Tanaka, I. (1959) Observed secular tilting motion of the ground which preceded the occurrence of several destructive earthquakes. Tellus 11, 15-22

Ospanov, A.B., Latynina, L.A., Tihomirov, A.V. (1981) Strain observation results obtained on the Prognostic Poligon Alma-Ata in connection with the seismicity. In: Sovremennije dvizenija zemnoj kori; pp: 21-24, Moscow, Nauka (in Russian)

Ozawa, I. (1974) Observations on the crustal movement in Osakayama Tunnel of the former Tokaidao line. J. Seismol. Soc. Jpn 27, 313-320

Priestley, K. (1974) Crustal strain measurements in Nevada. Bull. Seismol. Soc. Am. 64, 1319-1328

Sato, T., Ooe, M., Sato, N. (1983) Tidal tilt and strain measurements and analyses of the Esashi earth tides station. In: Proc. IXth Intern. Symp. Earth Tides, 223-237, Stuttgart, E. Schweizerbart'sche Verlagsbuchhandlung

Sydenham, P.H. (1974) 2000 hr comparison of 10m quartz-tube and quartz-catenary tidal strainmeters. Geophys. J.R. Astron. Soc. 38, 377-387

Takada, M., Furuzawa, T., Takemoto, S., Yamada, M. (1981) Observation of crustal deformation at Amagase Observatory. J. Geodetic. Soc. Jpn 27, 293-296

Wyatt, F., Agnew, D.C. () High-precision deformation measurements in Southern California. In: UGGI XVIII General Assembly, p. 96, Hamburg Inter-disciplinary Symposia, Programme and abstracts, Vol. I, 1983