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Gravity and magnetic observations

Modern techniques and equipment make it possible to carry out large-scale high-precision gravity and magnetometer surveys and regional studies along with seismic acquisition. Regular grid magnetometer surveys are ±0.5-2 nT accurate and ±3-5 nT accurate together with seismic acquisition. Added to acquisition, gravity surveys are conducted at sea state 4 with an accuracy of ±0.3-0.4 mGal and that of ±0.1-0.2 mGal during detailed work.

Geophysical Equipment

Chekan-AM gravimeters, Chekan-AM (Shelf-E model)
Manufacturer: Concern CSRI Elektropribor, JSC, Russia

  • Range: at least 10 Gal
  • Absolute error limit: ±0.3-0.8 mGal
  • Sensitivity (scale division value): 0.01 mGal
  • Time constant: 35 to 100 sec
  • Drift rate: at least 3 mGal/day 
SeaSPY2 magnetometers (Marine Magnetics, Canada)

  • Absolute accuracy: 0.1 nT
  • Sensor sensitivity: 0.01 nT
  • Counter sensitivity: 0.001 nT
  • Range: 18,000 nT to 120,000 nT
  • Gradient tolerance: over 10,000 nT/m 


Sentinel base station magnetometers (Marine Magnetics, Canada)

  • Absolute accuracy: 0.2 nT
  • Sensor sensitivity: 0.01 nT
  • Range: 18,000 nT to 120,000 nT
  • Gradient tolerance: over 10,000 nT/m
  • Storage capacity: one million readings
  • Sampling rates: 1/minute to 1Hz 

We are always glad to new partners and projects!

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