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Research
Short-term prediction has not been achieved despite it importance and many years of research. Recognizing the importance of recently reported electromagnetic precursors to crustal activities, or project aims to a systematic research on them and clarification of their physical mechanisms.

Research project
(1) Development of the crustal activity monitoring system with electromagnetic approach
- Study on ULF electromagnetic anomalous changes associated with large earthquake
- Study on anomalous changes associated with crustal activities in Atmosphere and Ionosphere
- Study on microwave radiation / thermal infrared anomaly / mid infrared anomaly associated with large crustal activity
- Study on early warning system for rainfall induced landslide using electromagnetic approach
(2) Estimation on underground electrical structure.
Perform Magneto-Terullic and self-potential measurements in order to estimate the underground structures.
(3) Signal Processing (Signal discrimination / Noise reduction)
Develop effective methodologies for time series data analysis in signal identification using wavelet analysis, fractal analysis, multi-fractal analysis, principal component analysis, singular spectrum analysis, direction finding analysis and so on.

Seismo-Electromagnetic Phenomena
Study on Seismo-Electromagnatics deals with electromagnetic phenomena associated with crustal activities such as earthquake, volcanic activity, landslide, and so on and is quite a new and interdiscripancy subject. Researchers in Japan, Greece, Russia, China, Taiwan, USA, France, Italy, Indonesia, India, and so on struggle with this subject. The phenomena are divided into three types as follows:

Observation System
ULF observation systemF
We observe 3 component geomagnetic fields (NS, EW, and vertical) and two horizontal geoelectric components at a site with GPS synchronization. The both electric and geomagnetic sensors are buried about 1-2 m depth. Collected data are digitized at 24 bit AD and fed to the data acquisition PC and transferred to our Laboratory. Observation in Japan is cooperated by EPRC, UEC, and so on.