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JDR Vol.4 No.4 pp. 579-587
(2009)
doi: 10.20965/jdr.2009.p0251

Paper:

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Practical Site-Specific Earthquake Early Warning Application

Katsuhisa Kanda, Tadashi Nasu, and Masamitsu Miyamura

Kobori Research Complex, Kajima Corporation, Akasaka, Minato-ku, Tokyo 107-8502, Japan

Received:
April 6, 2009
Accepted:
May 30, 2009
Published:
August 1, 2009
Creative Commons License
Keywords:
early warning, on-site warning, p-wave-pick-up sensor, seismic intensity
Abstract
Real-time hazard mitigation we have developed using earthquake early warning (EEW) (1) enhances seismic intensity estimation accuracy and (2) extends the interval between when an EEW is issued and when strong tremors arrive. We accomplished the first point (enhancing seismic intensity estimation) by reducing estimation error to less than that commonly used based on an attenuation relationship and soil amplification factor by considering source-location and wave propagation path differences based on site-specific empiricism. We accomplished the second point (shortening the time between warnings and when tremors arrive) using a high-speed, reliable communication network for receiving EEW information from the Japan Meteorological Agency (JMA) and quickly transmitting warning signals to users. In areas close to quake epicenters, however, warnings may not arrive before the arrival of strong ground motions. The on-site warning system we developed uses P-wave pickup sensors that detect P-wave arrival at a site and predict seismic intensity of subsequent S-waves. We confirmed the on-site warning prototype’s feasibility based on numerical simulation and observation. We also developed an integration server for combining on-site warnings with JMA information to be applied to earthquakes over a wide range of distances. We installed a practical prototype at a construction site near the 2008 Iwate-Miyagi Inland Earthquake epicenter to measure its aftershocks because JMA EEW information was too late to use against the main shock. We obtained good aftershock results, confirming the prototype’s applicability and accuracy. Integration server combination logic was developed for manufacturing sites requiring highly robust, reliable control.
Page numbers have been changed. Old numbers: pp. 251-259
Cite this article as:
K. Kanda, T. Nasu, and M. Miyamura, “Practical Site-Specific Earthquake Early Warning Application,” J. Disaster Res., Vol.4 No.4, pp. 579-587, 2009.
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References
  1. [1] Y. Nakamura, “On the Urgent Earthquake Detection and Alarm System (UrEDAS),” Proc. 9th World Conf. Earth. Eng., 7, pp. 673-678, 1988.
  2. [2] T. Moroi, M. Miyamura, N. Ohbo, K. Kanda, H. Yamanaka, and H. Yamaya, “Study on a Pre-Arrival Earthquake Detection and Information Transmission System,” Proc. 9th Japan Sympo. Earth. Eng., pp. 2281-2286, 1994 (in Japanese).
  3. [3] K. Kanda, T. Kobori, Y. Ikeda, and H. Koshida, “The Development of a Pre-arrival Transmission System for Earthquake Information Applied to Seismic Response Controlled Structures,” Proc.1st World Conf. Structural Control, TA3, pp. 23-32, 1994.
  4. [4] K. Doi, “Earthquake Early Warning -Provision to General Public and Future Prospect,” S05-03-017, Proc. 14 World Conf. on Earthquake Engineering, 2008.
  5. [5] Y. Fujinawa, Y. Rokugo, Y. Noda, Y. Mizui, M. Kobayashi, and E. Mizutani, “Efforts of Earthquake Disaster Mitigation Using Earthquake Early Warning in Japan,” S05-03-014, Proc. 14 World Conf. on Earthquake Engineering, 2008.
  6. [6] K. Kanda, T. Nasu, M. Miyamura, T. Kobori, M. Takahashi, T. Nagata, and H. Yamaya, “Application of Earthquake Early Warning System to Construction Sites,” Proc. 4th World Conf. Structural Control and Monitoring. 292, 2006.
  7. [7] T. Usami, “Conspectus of Damage Earthquakes in Japan -2001,” University of Tokyo Press, 606pp, 2003 (in Japanese).
  8. [8] Japan Meteorological Agency, “The Annual Seismological Bulletin of Japan for 2007,” DVD, 2009.
  9. [9] H. Si and S. Midorikawa, , “New Attenuation Relationship for Peak Ground Acceleration and Velocity Considering Effects of Fault Type and Site Condition,” J. Struct. Constr. Eng., AIJ, 524, pp. 63-70, 1999 (in Japanese).
  10. [10] T. Nasu, M. Miyamura, and K. Kanda, “Application of Earthquake Early Warning System: Case of a Freeze Warehouse and a Hotel,” Summaries Tech. Papers Annual Meeting, AIJ, B-2, pp. 657-658, 2007 (in Japanese).
  11. [11] T. Nasu, M. Miyamura, and K. Kanda, “An Application of Earthquake Early Warning System: Application to Broadcasting Station and Office Buildings,” Summaries Tech. Papers Annual Meeting, AIJ, B-2, pp. 781-782, 2008 (in Japanese).
  12. [12] Y-M. Wu and H. Kanamori, “Experiment on an Onsite Early Warning Method for the Taiwan Early Warning System,” Bull. Seism. Soc. Am. 95:1, pp. 347-353, 2005.
  13. [13] R. V. Allen, “Automatic Earthquake Recognition and Timing from Single Traces,” Bull. Seism. Soc. Am. 68:5, pp. 1521-1532, 1976.
  14. [14] H. Ueno, S. Hatakeyama, T. Aketagawa, J. Funazaki, and N. Hamada, “Improvement of Hypocenter Determination Method – Modification of Shallow Velocity Structure and Weight Function –,” Quarterly J. Seism., JMA, 65, pp. 123-134, 2002 (in Japanese).
  15. [15] Y. Nakamura and J. Saita, “FREQL and AcCo for a Quick Response to Earthquakes,” Gasparini, Manfredi, Zschau (Eds.), Earthquake Early Warning Systems, Springer, pp. 249-281, 2007.
  16. [16] K. Takamatsu, “Application of the Earthquake Early Warning System for the OKI Semiconductor Factory,” The 2nd Int. Workshop on Earthquake Early Warning, Kyoto, Japan, 2009.

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