Quis enim aut eum diligat quem metuat, aut eum a quo se metui putet? Coluntur tamen simulatione dumtaxat ad tempus. Quod si forte, ut fit plerumque, ceciderunt, tum intellegitur quam fuerint inopes amicorum. Quod Tarquinium dixisse ferunt, tum exsulantem se intellexisse quos fidos amicos habuisset, quos infidos, cum iam neutris gratiam referre posset.

Quis enim aut eum diligat quem metuat, aut eum a quo se metui putet? Coluntur tamen simulatione dumtaxat ad tempus. Quod si forte, ut fit plerumque, ceciderunt, tum intellegitur quam fuerint inopes amicorum. Quod Tarquinium dixisse ferunt, tum exsulantem se intellexisse quos fidos amicos habuisset, quos infidos, cum iam neutris gratiam referre posset.

Quis enim aut eum diligat quem metuat, aut eum a quo se metui putet? Coluntur tamen simulatione dumtaxat ad tempus. Quod si forte, ut fit plerumque, ceciderunt, tum intellegitur quam fuerint inopes amicorum. Quod Tarquinium dixisse ferunt, tum exsulantem se intellexisse quos fidos amicos habuisset, quos infidos, cum iam neutris gratiam referre posset.
                                                                       SEISMIC REFLECTION

GEMSOL UK Ltd specializes in the implementation of high resolution seismic reflection surveys for onshore marine environments. We regularly carry out seismic surveys in the fields of geotechnical and environmental as well as work concerning oil / mineral exploration.

Each survey being specific, we can deploy a simple 24-channel seismograph with PC-based processing software to large projects using the latest 120-channel seismic telemetry systems.

Seismic reflection on land and at sea
The seismic chain

                              ONSHORE
Three parts:
           The seismic source
           The sensors      
 Transform seismic energy into electrical voltage

Geophone
Electromagnetic sensors with voice coil


                                    OFFSHORE
 Three parts:
           The seismic source
            The sensors      
 Transform seismic energy into electrical voltage
                                       At sea
Hydrophones
Transform the pressure variations in the water into an electrical voltage (piezoelectric response)
Seismic flute device
                                                                                             
                                                                                               APPLICATIONS

                                              The seismic reflection method is one of the most developed in geophysics for: 
                          Oil and gas exploration; Geological mapping; Mineral exploration; Site studies in civil engineering.


                                                                    SEISMIC REFRACTION

Main vocation: recognition of the rock mass in the framework of the projects of implantation of structures: 
 
a) research and monitoring of the evolution of the position of the substratum under a soft cover 
 
b) characterization of the physical state of the various zones of the rock mass by the knowledge of the seismic velocities of each of these zones. 
                       Gemsol UK Ltd has a great experience in the use and deployment of this technique 

Also used in combination with other techniques for aquifer recognition, characterization of terrain rippability or indirect search for materials. 
                                                                            Seismic refraction:
                                                                      Method suitable for low and
                                                        medium depth reconnaissance (200 m maximum)
             

 APPLICATION
  The SEISMIC REFRACTION method is one of the most developed in geophysics for: 

     Analysis of the mechanical properties of the massifs prior to the construction of large public works (dams, major works ...). 
Road and rail routes, rippability, etc. 
Civil engineering: earthworks rippability, borrowing area of materials, hardness of the stratum, depth of foundation foundation, search for discontinuities, etc. 
Geotechnical investigation
Hydrogeology: determination of the thickness of the aquifer and its cover, discontinuities and fracturing, etc. 
Geological reconnaissance: variation of substratum depth, lithology and stratigraphy, basin and palaeovalline recognition, recognition of alterite and alluvial zones, etc.  
Quarry and mine: location and thickness of deposits. 
Geothermal: research resources, faults, etc. 
 Environment: stability of slope and slope, location of storage sites, etc.
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