The National Geoelectromagnetic Facility maintains its own instrument pool. Two types of instruments are available:

  1. Long-period magnetotelluric systems (1 Hz sample rate) and related support equipment. Currently 52 transportable Narod Geophysics NIMS systems, plus 1 LEMI-417 system. Many of these systems have been adapted to transmit all recorded data in real-time every 40-seconds to the IoMT cloud system for web-based processing.
  2. Ultra wide-band EM receivers configurable for dc, micro-Hz-to-MHz operations, and related support equipment. The NGF currently operates 13 Zonge ZEN Rx6 wideband, and 7 radio frequency EM receivers, including 18 Zonge/Geotell ANT/4 induction coils, 30 Zonge/Geotell ANT/6 induction coils, 27 Geotell ANT/7 induction coils custom designed for the NGF, a number of Zonge/Geotell ANT/2 and 2m induction coils, and 10 LEMI 031 fluxgate magnetometers. Please see links at left under "Our instruments" for more information. If you require access to a combination of these instruments that is not found in the drop-down menus on the "Request equipment" page, please contact us directly at: ngf@coas.oregonstate.edu.
  3. Next-generation hybrid (ultra)wideband DART EM systems with 9-channels supported by individual 32-bit digitizers with sample rates up to 38,400/second/channel. DART systems contain an integrated data acquisition system ("receiver") and precision triaxial fluxgate magnetometer housed in a compact tube. Optionally, induction coil magnetic field sensors can also be connected to the DARTs. DART systems also support telemetry to the IoMT cloud system.

These instruments are available for collaborative projects with the NGF. Please contact NGF <<at sign>> ceoas.oregonstate.edu for more information.

Insurance requirements: For some projects, users may be asked to supply evidence of insurance for the replacement value of NGF-managed instruments before they can be released to the user. Users are asked to insure the NIMS instruments for $18,000 replacement cost, the active source transmitters for $15,000 replacement cost, and the ultra wide-band Zen/5 instruments for $45,000 replacement cost. Users are also responsible for shipping costs to/from Oregon State University. Users will usually be responsible for providing external 12V deep cycle batteries for instrument power (exceptions can be made upon request), insulated dipole wire for electrode hookup, and all typical field supplies and hand tools necessary for installation of the instruments. Users are encouraged to provide their own field notebook computers for setup and operation of the instruments, although a limited number of NGF MacBookAir field computers can be made available, if not otherwise booked. Oregon State University will provide NIMSpy for operation of the NIMS instruments, its OSU-written Python instrument control software, a User Manual, and user training at our site at no additional cost. Software to operate the ZENs can also be provided upon request.

Additional technical services: Including remote site user training, or direct field support including full data acquisition and data processing/interpretation services can also be arranged, on a cost recovery basis.