GEM Advanced Magnetometers
Richmond Hill, ON
Company Overview
GEM has had a long and growth-oriented history - starting as Geophysical Electromagnetic Systems, a consulting partnership, and incorporating in 1980 as GEM Systems, Inc. Formed by Drs. Ivan Hrvoic and Jasna Hrvoic, the company continues to be managed by Dr. I. Hrvoic - who contributes many years of expertise in geophysical instrumentation and electronic design.
In the late 60's and early 70's, Dr. Hrvoic worked as Senior Research Engineer with another instrument manufacturer. During this time, initial research was conducted into the feasibility and design of a Continuous Reading High Sensitivity Airborne Overhauser Magnetometer. This work was completed by GEM in 1983 through a research grant, and led to the first of an innovative series of magnetometer / gradiometer technologies.
Commercial success of the GSM-8 proton precession magnetometer led to early expansion and creation of the GSM-9, the first pulsed Overhauser magnetometer and the portable Overhauser Memory Magnetometer. GSM-10 and 18 magnetometers were also developed and were received well in the resource exploration market.
The company has also developed solutions for other fields, such as UXO, volcanology, earthquake prediction, and engineering and environmental disciplines. As the company's reputation as a proven supplier of instrumentation for total field measurement grew, they branched into other fields including the observatory field. Today, Overhauser magnetometers have replaced many of the conventional proton precession installations around the world.
GEM's first airborne project was a vertical helicopter-borne gradiometer. It was based on a simple, yet effective self-oscillating Overhauser system. The company also developed the inexpensive GSM-11 airborne magnetometer that contributed to the commercial success of several airborne survey companies.
Airborne initiatives continue to be a strong focus, especially with the commercialization of a new GEM-developed potassium optically-pumped technology that is designed to address the limitations of traditional cesium sensors.
Following expansion in 1987, the company launched the GSM-19. This memory magnetometer combines Overhauser technology with proprietary free-radical solutions and firmware that is also able to accept other geophysical methods such as VLF and multiple gradiometer channels. With the success of the GSM-19 Overhauser system, the company has dedicated significant effort in making this unit one of the most advanced magnetometer technologies today.
GEM's development work continues today with development and evolution of the next generation of Potassium Optically Pumped magnetometers and gradiometers. These systems will provide increased sensitivity and survey efficiency for both airborne and ground survey applications.
Company Information
Physical Address
14-52 West Beaver Creek Rd.
Richmond Hill, ON L4B 1L9
CA
Mailing Address
14-52 West Beaver Creek Rd.
Richmond Hill, ON L4B 1L9
CA
Additional Details
Legal Name: GEM Systems Inc.
CA
GEM is the only geophysical instrumentation manufacturer that focuses solely on the research, development and distribution of advanced magnetic technologies - leading to many innovations in the following areas:
- GPS integration for accurate ground positioning and reduction
of survey cost
- Sensor technology for high-sensitivity mapping of geologic
structures, lithology and geophysical anomalies
- Signal counting for high signal-to-noise, absolute accuracy and
resolution
- Firmware and software for efficient, effective survey planning,
field work and processing
- Hardware and console design for field worthiness, portability
and low power consumption
- Custom systems for resolution of customer-specific
instrumentation requirements
Particular specialties include the design and development of Overhauser, Potassium Optically Pumped and Proton Precession magnetic / gravimetric sensors and technologies.
GEM continues to work in these areas in the knowledge that our customers benefit significantly via improved survey efficiency, and higher quality magnetic and gradiometric data.
Contacts
Products
- Geophysical Instrumentation - Magnetometers / Gradiometers / Vlf
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Gsm-19 Overhauser Magnetometer / Gradiometer / Vlf
Overhauser magnetometers use electron-proton coupling to produce an order-of-magnitude stronger precession signals than conventional proton precession magnetometers. This results in improved signal-to-noise ratio. GEM's GSM-19 -- the only commercial Overhauser system - delivers a sensitivity of 0.015 nT combined with robusteness and low power consumption. Its also features a built-in GPS option for high positioning accuracy and reduced grid surveying costs. A VLF electromagnetic surveying option is also available. Applications include mineral exploration, environmental surveys, pipeline mapping, archeological, airborne base station, and other earth science applications.
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Gsm-19t Proton Precession Magnetometer / Gradiometer / Vlf
The GSM-19T is a state-of-the-art Proton Precession Magnetometer / Gradiometer system for end-to-end data acquisition at an affordable price. The new version 6.0. system delivers many upgrades including a built-in GPS option for high positioning accuracy and reduced grid surveying costs, 25% increase in sensitivity, enhanced memory and programmable base station option. A VLF electromagnetic surveying option is also available. Applications include mineral exploration, environmental surveys, pipeline mapping, and other earth science applications.
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Gsmp -30a Airborne Magnetometer / Gradiometer
The 'SuperSenser' is very high resolution airborne magnetometer / gradiometer system. Available as either a complete system or as a single sensor, the GSMP-30A operates on a unique technology known as Potassium Optical Pumping. This technology generates very high sensitivity with low heading error for airborne implementations. Applications include mineral and hydrocarbon exploration, environmental assessments, UXO detection, pipeline mapping and other earth science applications.
NAICS Categories
Additional Information
334512
6655-Geophysical and Astronomical Instruments, 6675-Drafting, Surveying, and Mapping Instruments