High Frequency MT Array、Mining & IoT
MTSeis_S is An Universal Audio Magneto-telluric Exploration system, which includes three coils, five non-polarized electrodes, 8-channel recorder and a calibration sub-system.
| Application Examples | Available S oftware |
|---|---|
| Groundwater exploration | MTSeis_Data Plow |
| Mining exploration | MTSeis_Data Processing |
| Civil Engineering survey | IPI2win_MT (Free AP) |
| Shallow geothermal exploration | ModEM (Resale of ModEM Geophysical Inc.) |
| Seismoelectric observation | Passive & Active Seismic Source Tomography |
| Earthquake research | CSEM 3D Tomography |
| Recorder | Specifications |
|---|---|
| ADC | 24 Bits x 8 channels |
| 3G / 4G Internet connection | Optional with SMA for external Antenna |
| WIFI AP | 802.11 b / g / n with SMA for external Antenna |
| Sampling rate | 16KHz & 4KHz |
| Geophone connection | Optional |
| Power supply | Tri-paths : External, Hot-swappable 20AH x @7.2V & 5.2AH @7.2V backup |
| Dimension / Weight | 26.5 cm x 23.5 cm x 16 cm / 4.2 kg |
| Frequency range | 8KHz ~ 0.1Hz |
| Anti-aliasing filter | 8KHz |
| Array Processing | Yes |
| Interfaces | Ch1-Ch3 : M12 x8 for optional geophones Ch4-5 : M12 x8 for two electrode pairs Ch 6-8 : M12 x8 for three coils SMA x2 for Cellular modems ; SMA x2 for WIFI ; SMA x1 for GPS ; One SMA reserved M12x3 for External power RJ45 x2 for Ethernet |
| Non-polarized Electrodes | |
|---|---|
| Dimension / Weight | Φ10 cm x 15 cm/ 550 g |
| V difference between two electrodes | < 1 mV |
| Noise in 30 minutes | < 0.01 mV |
| 24-hour stability | < 0.1 mV |
| 30-days stability | < 1.0 mV |
| Impedance | < 50 Ohm |
| Frequency range | DC ~ 10 KHz |
| Temperature range | -10 ~ 40oC |
| Calibration Box | |
|---|---|
| Dimension / Weight | 21.5 cm x 18 cm x 9.5 cm/1 kg |
| Sinusoidal signal Frequency | 8Hz using push button |
| Voltage output to current electrodes | ~ 100mA |
| Current output to coil | ~ 1mA |
| Coil | |
|---|---|
| Dimension / Weight | Φ7 cm x 66 cm/ 6kg |
Amplitude response
Phase response
Other Possible Applications
- Passive Earthquake Exploration (Micro Earthquake)
- Active Shear wave Vibroseis Tomography Exploration (Patented pending)
- Control Source Electromagnetic (CSEM) Exploration
- Earthquake Research
- Seismo-electric Exploration
Other MTSeis_S Configuration
- Eight Geophones for Seismic
- 3 Low freq. coil + 3 High Freq. Coils + Two Electrode Pairs
- Eight Electrode Pairs
MTSeis_S Array uses four simultaneously recording stations to de-spike the un-correlated noises by variance technique. The array includes one Calibration sub-system for calibrating at field site.
Red line : original
Green line : noise removed for 114,000 seconds
Example of Effective Apparent Resitivity XZ Plane
Example of resistivity distribtion (right figure)along the cross section shown on the left figure
Content
- wwj@3jtech.com for Tech Questions.
- info@3jtech.com for system leasing or purchasing.