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Seismogenic Zone Monitoring Research Group

Seismogenic Zone Monitoring Research Group

写真 Seismogenic Zone Monitoring Research Group
Group Leader
Narumi TAKAHASHI

  • Research on seismogenic zones by monitoring
  • Research and development on early detection of earthquakes and tsunamis
  • Research and development on systems to transmit information for early detection
  • Research utilizing the results of monitoring and forecasting studies
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Seismogenic Zone Monitoring Research Group

DONET, deployed under the Sea of Kumano off the Kii Peninsula located directly above the source areas of the Tonankai earthquakes, started seafloor observation in August 2011, and transmits wide-area, high-density observation data of seismographs and water pressure gauges (tsunami gauges) from 20 observatory stations in real time.
The Seismogenic Zone Monitoring Research Group does research to monitor, on a steady basis, earthquake distribution and crustal deformation in the seismogenic zone through some means such as hypocenter determination of microseismic using DONET data, to detect changes in the stress field in the DONET area, and thereby understand what is occurring there now and what is going to occur. We also manage the data sent from DONET to ensure the reliability of monitoring results. On the other hand, we closely cooperate with other groups in the Center, and utilize monitoring results for clarification of existing conditions and future prediction of the seismogenic zone to bring in new discoveries.
Moreover, within our group, we are promoting improvement of high-performance computing techniques for detection and real-time prediction of tsunamis, developing a tsunami inundation modeling application utilizing real-time data from DONET, and promoting new efforts, including the development of a monitoring system using mooring buoys capable of observation of crustal deformation and tsunamis in real time even in out of coverage DONET stations.


figure1
The real-time tsunami prediction system under development utilizing real-time observation data from DONET.
When the amplitude value of tsunami genesis is detected, the tsunami inundation map in coastal area are displayed immediately.
figure2
In cooperation with institutes such as the Marine Technology and Engineering Center, we are also developing a new tsunami and crustal movement observation system using mooring buoys.