Examination of the reliability of the JMA seismic observation network around the southern Okinawa Trough

Chen Zuo-lin; Yang Zuo-sheng; Hirata Naoshi

doi:10.1007/BF02850509

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Examination of the reliability of the JMA seismic observation network around the southern Okinawa Trough

Updated：2023-05-16

- Examination of the reliability of the JMA seismic observation network around the southern Okinawa Trough
- Journal of Oceanology and Limnology Vol. 12, Issue 2, Pages: 114-119(1994)
- Affiliations：
  
  Institute of Estuarine & Coastal Studies Ocean University of Qingdao
- Author bio：
- Funds：
- DOI：10.1007/BF02850509
  CLC：
- Published：1994
- Accepted：
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Zuo-lin, C., Zuo-sheng, Y. & Naoshi, H. Examination of the reliability of the JMA seismic observation network around the southern Okinawa Trough., Chin. J. Ocean. Limnol. 12, 114–119 (1994). https://doi.org/10.1007/BF02850509
DOI：

Zuo-lin, C., Zuo-sheng, Y. & Naoshi, H. Examination of the reliability of the JMA seismic observation network around the southern Okinawa Trough., Chin. J. Ocean. Limnol. 12, 114–119 (1994). https://doi.org/10.1007/BF02850509 DOI：

摘要

Abstract

After the establishment of the seismic observation network of southern Okinawa in August

1988 by the JMA (Japan Meteorological Agency)

many hypocenters of earthquakes have been located. However

due to the small number of observation stations and narrow configuration of the array

the hypocenters located contain some systematic errors. Numerical experiments on the extent of the errors and the reliability of the JMA seismic observation network showed that the obtained hypocenters deeper than 100 km were reliable

but that for the obtained hypocenters shallower than 100 km

only the epicenters were reliable.

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Keywords

references

Hirata, N., Kinoshita, H., and Katao, H., et al., 1991, Report on DELP 1988 cruises in the Okinawa Trough, Part 3: Crustal structure of the southern Okinawa Trough.Bull. Earthquake Res. Inst. Univ. Tokyo 66: 37–70.

Harata, N. and Matsu'ura, M., 1987. Maximum-likelihood estimation of hypocenter with origin time eliminated using nonlinear inversion technique.Phys. Earth. Planet. Inter. 47: 50–61.

Iwasaki, T., Hirata, N. and Kanazawa, T. et al., 1990. Crustal and upper mantle structure in the Ryukyu island arc deduced from deep seismic sounding.Geophys. J. Int. 102: 631–651.

Katsumata, M. and Sykes, L., 1969. Seismicity and tectonics of the western Pacific: Izu-Mariana-Caroline and Ryukyu-Taiwan regions.J. Geophys. Res. 76: 5923–5948.

Lee, C. S., Shor, G. G., Jr. and Bibbe, L. D. et al., 1980. Okinawa Trough: Origin of a back-arc basin.Mar. Geol. 35: 219–241.

Matsu'ura, M., 1984. Bayesian estimation of hypocenter with origin time eliminated.J. Phys. Earth 32: 469–483.

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