Add product
Service

Differential Hydromagnetic and Surface Gravimetric Observations

(Service)
Online Support Service: No
Interpretation of Data: No
Description:
We have developed a methodology and technique for performing high-frequency gravimetric and hydromagnetic gradiometric surveys. The technique allows even at high latitudes (above 70 ° N) to carry out magnetometric measurements in regional studies in combination with seismic exploration with an error of less than + 3-5 nT and + 0-5-2 nT - for detailed work.
Overview:

Gravimetric survey is carried out in conjunction with seismic surveys with sea waves up to 4 points with an error of + 0.3-0.4 mGal for regional work and + 0‚1-0‚2 mGal for detailed.

Equipment

  • Gravimeters "Chekan-Am", "Chekan-Am" (model "Shelf-E") production: Russia (JSC "Concern" Central Research Institute "Elektropribor")
  • MEASUREMENT RANGE LESS THAN 10 GAL
  • LIMITS OF ALLOWED ABSOLUTE ERROR ± 0.3-0.8 MGAL
  • SENSITIVITY (DIVISION PRICE) 0.01 MGAL
  • CONSTANT TIME OF GRAVIMETROT from 35 to 100 C
  • Zero-point offset speed is less than 2 mGal / sut
  • SeaSPY2 magnetometers, production: Canada (Marine Magnetics)
  • ABSOLUTE ACCURACY 0.1 NTL
  • SENSOR SENSITIVITY 0.01 NTL
  • COUNTER SENSITIVITY .001 NTL
  • MEASUREMENT RANGE FROM 18,000 NTL TO 120,000 NTL
  • ALLOWED DEVIATION OF A GRADIENT MORE THAN 10,000 NTL / M

Using modern techniques and this equipment allows you to perform large-scale high-precision gravimetric and magnetometric surveys, as well as regional studies in conjunction with seismic surveys. The accuracy of magnetometric surveys, according to a regular network of observations, is ± 0.5-2 nT, in combination with seismic exploration - ± 3-5 nT. Gravimetric surveys in combination with seismic surveys are carried out with sea waves up to 4 points, with an accuracy of ± 0.3-0.4 mGal, and with detailed work ± 0.1-0.2 mGal.

OJSC "Arctic Marine Exploration Expedition"

Locations: Russia / Murmansk
Main Products/Services: Services for the study of the geological structure of the waters of the seas and oceans, land and transit zones
Year Established: 1972