Refraction Masw Reflection Survey Seismograph Digital Seismograph With Seismic Geophone And Seismic Cable Shear Wave Velocity Profile Seismic Instrument
The Refraction MASW (Multichannel Analysis of Surface Waves) Reflection Survey Seismograph is a digital seismograph equipped with seismic geophones and a seismic cable. It is specifically designed for conducting MASW surveys, which analyze the dispersion characteristics of surface waves to determine the shear wave velocity profile of the subsurface.
Features:
Digital Seismograph: The Refraction MASW Reflection Survey Seismograph is a modern, digital instrument that captures and records seismic wave data with high precision and accuracy. It uses advanced analog-to-digital converters to convert the analog signals from the geophones into digital data for analysis.
Seismic Geophone: Geophones are the sensors used to detect ground motion caused by seismic waves. The seismograph is equipped with seismic geophones that are carefully positioned on the ground surface in linear arrays or grids. These geophones capture the surface waves and convert them into electrical signals.
Seismic Cable: The seismic cable connects the geophones to the seismograph unit, allowing for the transmission of the recorded seismic signals. It ensures that the data from all the geophones is collected and transferred to the seismograph for analysis.
Shear Wave Velocity Profile: The primary focus of the MASW survey is to determine the shear wave velocity profile of the subsurface. By analyzing the dispersion characteristics of surface waves, the seismograph helps in estimating the shear wave velocity at different depths. This information is crucial for geotechnical and engineering projects.
Features:
Digital Seismograph: The Refraction MASW Reflection Survey Seismograph is a modern, digital instrument that captures and records seismic wave data with high precision and accuracy. It uses advanced analog-to-digital converters to convert the analog signals from the geophones into digital data for analysis.
Seismic Geophone: Geophones are the sensors used to detect ground motion caused by seismic waves. The seismograph is equipped with seismic geophones that are carefully positioned on the ground surface in linear arrays or grids. These geophones capture the surface waves and convert them into electrical signals.
Seismic Cable: The seismic cable connects the geophones to the seismograph unit, allowing for the transmission of the recorded seismic signals. It ensures that the data from all the geophones is collected and transferred to the seismograph for analysis.
Shear Wave Velocity Profile: The primary focus of the MASW survey is to determine the shear wave velocity profile of the subsurface. By analyzing the dispersion characteristics of surface waves, the seismograph helps in estimating the shear wave velocity at different depths. This information is crucial for geotechnical and engineering projects.
Technical specification:
| Channel number |
24 |
| Sample stations |
1024, 2048, 4096, 8192, 16384 |
| Sample frequency |
a, Generally, 10μs, 25μs, 50μs, 100μs, 200μs, 500μs, 1ms, 2ms, 5ms, 10ms, 20ms
b, For micro-tremor survey, 1ms ~ 200ms selectable |
| A/D converter |
24 bit |
| Signal stack and amplification |
32 bit |
| Dynamic range |
140dB |
| Frequency bandwidth |
0.1Hz ~ 4000Hz |
| Noises |
1μV(full-frequency state) |
| Amplitude consistency |
±0.2% |
| Phase consistency |
±0.01ms |
| Time lapse |
0~9999ms |
| Date format |
SEG-2 |
| Working temperature |
0ºC~50ºC, 90%RH |
| Storage temperature |
-20ºC ~ +60ºC |
Audited Supplier 
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