MTSeis_S Array System
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 |
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Recorder |
Specifications |
|
ADC |
24 Bits x8 channels |
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3G/4G Internet connection |
Optional with SMA for external Antenna |
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WIFI AP |
802.11 b/g/n with SMA for external Antenna |
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Sampling rate |
16KHz & 4KHz |
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Geophone connection |
Optional |
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Power supply |
Tri-paths: External, Hot-swappable 20AH x @7.2V & 5.2AH @7.2V backup |
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Dimension/ Weight |
26.5 cm x 23.5 cm x 16 cm /4.2 kg |
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Frequency range |
8KHz ~ 0.1Hz |
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Anti-aliasing filter |
8KHz |
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Array Processing |
Yes |
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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 |
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Non-polarized Electrodes |
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Dimension/ Weight |
Φ10 cm x 15 cm/ 550 g |
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V difference between two electrodes |
< 1 mV |
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Noise in 30 minutes |
< 0.01 mV |
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24-hour stability |
< 0.1 mV |
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30-days stability |
< 1.0 mV |
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Impedance |
< 50 Ohm |
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Frequency range |
DC ~ 10 KHz |
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Temperature range |
-10 ~ 40oC |
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Calibration Box |
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Dimension/ Weight |
21.5 cm x 18 cm x 9.5 cm/1 kg |
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Sinusoidal signal Frequency |
8Hz using push button |
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Voltage output to current electrodes |
~100mA |
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Current output to coil |
~1mA |
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Coil |
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Dimension/ Weight |
Φ7 cm x 66 cm/ 6kg |
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Amplitude response |
|
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Phase response |
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Other Possible Applications
lPassive Earthquake Exploration (Micro Earthquake)
lActive Shear wave Vibroseis Tomography Exploration (Patented pending)
lControl Source Electromagnetic (CSEM) Exploration
lEarthquake Research
lSeismo-electric Exploration
Other MTSeis_S Configuration
1) Eight Geophones for Seismic
2) 3 Low freq. coil + 3 High Freq. Coils + Two Electrode Pairs
3) 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: 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
