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ZHAN ZHIJIA, GAO JINTIAN, Hu RONGSHENG, ZHANG HONGLI, ZHAO CONGLI, SHEN WENZHI. 1990: TECTONOMAGNETIC EXPERIMENT AROUND MIYUN RESERVOIR. Acta Seismologica Sinica, 12(1): 70-77.
Citation: ZHAN ZHIJIA, GAO JINTIAN, Hu RONGSHENG, ZHANG HONGLI, ZHAO CONGLI, SHEN WENZHI. 1990: TECTONOMAGNETIC EXPERIMENT AROUND MIYUN RESERVOIR. Acta Seismologica Sinica, 12(1): 70-77.
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TECTONOMAGNETIC EXPERIMENT AROUND MIYUN RESERVOIR

  • Institute of Geophysics, State Seismological Bureau

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  • Published Date: September 01, 2011
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  • To study the tectonomagnetic effect in the reservoir vicinity,2 21 sites,about 2-5 km apart,have been set up around the Miyun reservoir. The distances between geomagnetic sites and the reservoir bank are some tens of meters to 15 km. Using G-816 and G-826 magnetometers,geomagnetic total intensity was observed once each season during 1983-1987. Analysis of geomagnetic data and the data of water storage of the Miyun reservoir shows that the correlation coefficients between the geomagnetic changes and the variations in water level and water volume are - (0.28 + 0.22) nT/m and - (0.35 + 0.31)10-8nT/m3 respectively. It shows that there is a stronger negative correlation between the geomagnetic changes and the variations in the water storage. This rather strong negative correlation is probably a reflection of the piezomagnetic effect of the magnetic rock under the vicinity of the Miyun reservoir. Because according to the experimental results,the tectonomagnetic experiment around the reservoir is a rather good simulation of the seismomagnetic phenomena,it is believed that geomagnetic observations with a dense network in a seismically active area may catch the information of seismomagnetic precusors.
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    • References (1)
  • [1] Nagata, T., 1969. Tectonomagnetism. lAG'A Bulletin, No, 27,2 5——3 8.

    [2] Smith, B.and Johnston, M., 1976. A tectonomagnetic effect observed before a magnitude 5.2 earthquake near Hollistcr. J. Geophys. Res., 81, 3556——3560.

    [3] Johnston, M,Mueller, R. and Dvarah, J.. 1981. Volcanomagnetic observations during eruptions May——Au——gust 1980, in the eruptions of Mount St, Helens Washington. Geological Survey Prof. Pap., 1250, 183——189.

    [4] Davis, P. M and Stacey, F. D., 1972. Geomagnetic anomalies caused by a man——made lake, Nazure, 240,348——349.

    [5] Hasbrouck, W. P. and Allen, J. H., 1972. Quasi——Static magnetic field changes associated with the Cannikin nuclear explosion, Bull. Seism. Soc. Amer.. 62, 1479——1467.

    [6] Shapiro, V. A., Pushkov. A. N., Abdullabekov. K. V. Berdeliev, E. B., and Muminov, M. Yu., 1978.Geomagnetic investigations in the seismoactive regions of Middle Asia. J. Ccomagn. Ceoclec., 30, 503——509.

    [7] Shapiro, V.A.and Abdullabekov. K., 1982. Anomalous variations of the geomagnetic field in East Fer——gaka——magnetic precursor of the Alay earthquake with M=7.0 (1978, November 2), Geophys. J. R. astr. Soc., 68, 1——5.

    [8] Rikitake, T.. Honkura, Y., Tanaka, H., et al., 1980. Changes in the geomagnetic field associated with earthquakes in the Izu Penisula, Japan, J. Geomagn. Geoelec., 32, 721——739.

    [1] Nagata, T., 1969. Tectonomagnetism. lAG'A Bulletin, No, 27,2 5——3 8.

    [2] Smith, B.and Johnston, M., 1976. A tectonomagnetic effect observed before a magnitude 5.2 earthquake near Hollistcr. J. Geophys. Res., 81, 3556——3560.

    [3] Johnston, M,Mueller, R. and Dvarah, J.. 1981. Volcanomagnetic observations during eruptions May——Au——gust 1980, in the eruptions of Mount St, Helens Washington. Geological Survey Prof. Pap., 1250, 183——189.

    [4] Davis, P. M and Stacey, F. D., 1972. Geomagnetic anomalies caused by a man——made lake, Nazure, 240,348——349.

    [5] Hasbrouck, W. P. and Allen, J. H., 1972. Quasi——Static magnetic field changes associated with the Cannikin nuclear explosion, Bull. Seism. Soc. Amer.. 62, 1479——1467.

    [6] Shapiro, V. A., Pushkov. A. N., Abdullabekov. K. V. Berdeliev, E. B., and Muminov, M. Yu., 1978.Geomagnetic investigations in the seismoactive regions of Middle Asia. J. Ccomagn. Ceoclec., 30, 503——509.

    [7] Shapiro, V.A.and Abdullabekov. K., 1982. Anomalous variations of the geomagnetic field in East Fer——gaka——magnetic precursor of the Alay earthquake with M=7.0 (1978, November 2), Geophys. J. R. astr. Soc., 68, 1——5.

    [8] Rikitake, T.. Honkura, Y., Tanaka, H., et al., 1980. Changes in the geomagnetic field associated with earthquakes in the Izu Penisula, Japan, J. Geomagn. Geoelec., 32, 721——739.
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