Japan Oil, Gas and Metals National Corporation (JOGMEC) has been developing the proper geophysical interpretation technology for exploration and appraisal of geothermal resources in Japan, and has conducted a wide variety of geophysical surveys in Yamagawa geothermal field, Japan
Geophysical data acquired in Yamagawa geothermal field:
- Magnetotelluric data
- Gravity data
- Magnetic data
- Seismic data
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/1Japan.jpg?time=1722044428)
Magnetotelluric (MT) data:
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/2Japan.jpg?time=1722044428)
New Energy and Industrial Technology Development Organization
(NEDO) acquired
- Total 134 stations (red)
- Impedance tensors processed using remote reference station data
40 frequencies from 0.00055 to 374 Hz
Ibusuki City acquired in 2015
- Total 25 stations (blue)
- 40 frequencies from 0.00034 to 320 Hz
Gravity and Magnetic Data:
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/3Japan-e1639092862224.jpg?time=1722044428)
Seismic Data
3D seismic reflection and refraction data acquired by JOGMEC in 2013
3D seismic velocity model
Seismic surfaces
- Top of Nansatsu formation
- Top of Dacite
- Near-surface high velocity volume
Seismic surfaces
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/4bJapan.jpg?time=1722044428)
Seismic velocity modal
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/4aJapan.jpg?time=1722044428)
Vertical sections of 3D resistivity and density models produced by the joint inversion
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/5aJapan-scaled.jpg?time=1722044428)
Recovered resistivity overlaid with recovered magnetization vector
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/6Japan.jpg?time=1722044428)
Recovered density overlaid with recovered magnetization vector
![](https://djzd62.a2cdn1.secureserver.net/wp-content/uploads/2021/12/7Japan.jpg?time=1722044428)