GEM Overhauser Magnetometers

GEM Systems Overhauser Magnetometer system. It can be configured with
additional survey sensors for simultaneous gradiometer readings as well as VLF. System configurations can also include walking mode and GPS. GEM Systems GSM-19 Overhauser total field magnetometer and the GSM-19G Gradiometer provide improved data quality and greater absolute accuracy than Proton magnetometers, while providing a robust and comparable system to costlier Cs magnetometers for ground applications.

Proton Magnetometers

GEM Proton Magnetometers

Reliable and Robust For Exploration, Environmental and Engineering Applications. GEM Systems (GSM-19T) Proton Precession system. The image shows a staffmounted configuration with console, sensor, supporting pole and cables. A backpack-mounted version, and optional GPS are available for hands free operation. GEM Systems Proton Precession magnetometer (GSM-19T) is a versatile and easy-to-use instrument for subsurface investigations and exploration….

GEM Ground VLF System

Portable fast resistivity solutions. Map resistivity up to 100 metres. Inversion model produced with EMTOMO software. The GEM GSM-19V portable VLF system is a robust tool for environmental and exploration purposes. Technically Superior This new evolved system builds off our proven airborne technology. The GEM VLF takes true measurements of the Vertical in-phase & Out-ofphase components as % of total field within the VLF frequency range of 15 – 30kHz…

Observatory & Earth Monitoring

GEM Observatory & Earth Monitoring

Precise Magnetic Field Monitoring Solutions for Observatory Calibration, Volcano and Natural Hazard Research. The GSM-90 is a scalar magnetometer of high absolute accuracy (0.1 nT) and low long term drift (0.05 nT /year). It is optimized for use in magnetic observatories, long term monitoring arrays in volcanology and where the following are essential:
* long term stability and high accuracy;
* high resolution and low noise (0.022 nT).

dIdD Suspended System

GEM dIdD Suspended System

Precise Earth Monitoring Solutions for daily changes in Inclination & Declination.
GEM Systems dIdD system was designed toprovide precision measurements of the Earth’s magnetic field and its components so that accurate changes in the Declination and Inclination of the field could be monitored. In the past, magnetic observatories relied on a combination of Overhauser, fluxgate and theodolite instruments

GEM Potassium Magnometer

  • GSMP-35/25 Console and Sensor
  • 0.0002nT @ 1Hz (GSMP-35)
  • 0.022nT @ 1Hz (GSMP-25)
  • Single Sensor & Cables
  • GEMlink Software
  • Expandable Staff & Backpack
  • Avaialble in Gradiometer and with VLF

GEM SuperGrad Earthquake Research GSMP

Magnetics have played a significant role in Earthquake studies for several decades. Based on the theory of piezomagnetism and / or piezokinetics, it offers a possibility of detection of precursors to earthquakes due to gradual pressure build-up. Three typical limiting factorsinclude sensitivity, long-term stability and a need to eliminate environmental noise (diurnals, manmade noise, etc.).


GEM Gradient Magnetometer UAV

Utilising GEM’s High Sensitivity Potassium Sensors.
UAVs can now be used to perform airborne geophysical surveys. Map the spatial variations in the Earth’s magnetic field for a variety of useful applications. Explore mineral potential, map UXOs and Archeology in high resolution.
• UAV borne magnetic and gradient surveys can be carried out in areas that are too dangerous, too remote, or too expensive for equivalent…

GEM UAV Solutions

Fixed-wing, Multicopter and Rotary-wing platforms featuring ultra-light Potassium Magnetometer. The DRONEmag™ (GSMP-35U) magnetometer has been installed on a multitude of unmanned platforms and in different configurations. Unmanned Aerial Vehicles (UAVs) can be used to perform airborne geophysical surveys, in particular aeromagnetic surveys where mapping the spatial variations in the Earth’s magnetic field can be used to further the understanding of the geology…

GEM DRONEmag™ UAV Magnetometer

Driven initially by military work, Unmanned AerialVehicles have evolved significantly in the last decade. With improvements in efficiency, range, size, and payload, drone magnetometer platforms have proven effective in many applications. The drone-mounted magnetometertrend is also growing quickly, as the knowledgeof its efficiency and high-quality data becomes more well known each day. GEM’s ultra lightweight DRONEmag…

High Sensitivity Potassium Airborne Magnetometer

GEM High Sensitivity Potassium Airborne Magnetometer

The Potassium Airborne Magnetometer (GSMP-35A) is based on the unique optically pumped Potassium sensor – a technology that offers an order of magnitude increase in resolution over other systems. It also provides:
• Reduced “heading” errors
• Highest absolute accuracy
• Decreased maintenance costs

UAV Gradiometer System AirGRAD

GEM UAV Gradiometer System AirGRAD

The AirGRAD is the first and only vertical gradiometer currently available on the market, designed specifically for UAV applications. At a total net weight of 8.5 kg, the turnkey gradiometer solution includes two high sensitivity, ultra-lightweight magnetometers as well as all the components required for precise UAV aeromagnetic surveys.


AirBIRD UAV Magnetometer system

GEM AirBIRD UAV Magnetometer system

The AirBIRD is a self contained lightweight complete airborne magnetometer system designed for UAV applications. At the core of the AirBIRD is GEM’s modified high sensitivity Airborne Magnetometer. Especially redesigned for UAV applications, the UAV Mag is the most sensitive Magnetometer on the market and boasts the highest absolute accuracy and lowest heading error available. The electronics component of the magnetometer (GSMP-35U) …

GEM Airborne VLF System

This GSM-90AV VLF System provides true measurements of the Vertical in-phase & Out-ofphase components as % of total field within theVLF frequency range of 15 – 30kHz. Many older systems only measure the total field and quadrature components of the field. The airborne system features two 3-coil sensors that acquire data from 2 VLF transmitting stations simultaneously without sensor orientation. Data include in-phase, out-of-phase, horizontal components in x and y and field strength in