Join us in New Orleans for the Society of Exploration Geophysicists (SEG) International Exposition
The SEG International Exposition and 85th Annual Meeting is coming back to New Orleans. GEM Systems is joining over 8,500 professionals from 70 different countries at this the largest global geoscience exhibition. Visit us at booth #1518 to discuss our latest innovative solutions for exploration and the earth sciences. http://www.seg.org/web/seg-new-orleans-2015/welcome
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Space Exploration Rover With Magnetometer Tested at Carleton
On Thursday, May 21st the general public was lucky enough to witness an outdoor test of the KAPVIK Mars Rover instrumented with a magnetometer from GEM Systems For more visit http://earthsci.carleton.ca/news/15/space-exploration-rover-magnetometer-tested-carleton
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Unmanned Air Vehicles in the Earth Sciences session at the joint meeting of the AGU-CGU-GAC-MAC, 3-7 May in Montreal
The Joint Assembly is a unique platform for scientists and researchers to connect with their Canadian and U.S. colleagues in an intimate setting. With more than 2,000 attendees, the meeting covers the entire Earth and space science spectrum. GEM Systems was invited to present the paper entitled “Developing a High Sensitivity Magnetic Gradiometer for Unmanned Aerial Vehicles ” at the Unmanned Air Vehicles in the Earth Sciences session at the joint meeting of the AGU-CGU-GAC-MAC; follow the link below for more. https://agu.confex.com/agu/ja2015/meetingapp.cgi#Session/5931
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GEM’s autonomous gradiometer on display at Unmanned Systems
AUVSI’s Unmanned Systems 2015 convenes the largest global community of commercial and defense leaders in intelligent robotics, drones and unmanned systems. On May 4, 2015, every domain — air, ground and maritime — and industry, from agriculture and construction to energy and academia, converged under one roof and GEM Systems’ autonomous magnetic gradiometer was on display along with other innovations that will shape our future.
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Magnetometers and archaeological investigations
Since the early 1950’s magnetometers have been used in archaeological investigations and that is why GEM Systems is joining over 3,000 archaeologists in San Francisco for the 80th annual meeting of the Society for American Archaeology. Why don’t you drop by booth 110 in Grand Ballroom B, at the San Francisco Hilton to see the latest technology available to non-invasively evaluate an archaeological site. booth 110 in Grand Ballroom B, at the San Francisco Hilton
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Robotic Geophysical Mapping
GEM Systems is collaborating with Carleton University on a 6 month project to demonstrate that the Canadian Kapvik space exploration rover can be used to make geomagnetic measurements. The goal of the project will be to demonstrate that that the two (2) technologies (magnetometer and rover) can work together. It is anticipated that the development of a custom-made boom for the rover will be required to overcome the magnetic interference of Kapvik. Through the project GEM Systems will demonstrate that its UAV Magnetometer sensor is lightweight and versatile enough to be used on a high tech rover, in addition to a…
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Magnetics in Archaeology
Magnetics are an increasingly key exploration method for archaeological applications. Main benefits lie in the ability to resolve details non-invasively, the wide range of artifacts and cultural affects that are detectable, and the low-cost of magnetics in comparison to other geophysical methods. Having detailed knowledge of a site prior to investigation reduces excavation costs while ensuring that no part of the site is missed. In addition, as many projects are time sensitive, availability of a rapid, effective method may mean the difference between recovery and non-recovery. GEM’s unique Overhauser & Potassium magnetometer/gradiometer systems combine data quality, survey efficiency,…
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GEMLink+ – Much More than Communication Software
GEMLink+ pre-processing software, which is provided with every magnetometer system GEM Systems manufactures provides diurnal correction, profile plotting and some basic mapping and modeling functions. GEMLink+ provides all of the data visualization features needed by the geoscientist to quickly assess the data quality of an acquired data set. Since the Earth’s magnetic field varies with time, a base station magnetometer is needed to monitor and record the variations with time. Applying the “diurnal” corrections is another function of the GEMLink+ software. GEMLink+ can import and export Google KMZ files too; the only caveat is that co-ordinates need to be in…
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Potassium Vapour Magnetometers – A Short Summary (Part 3)
Broad Line Versus Narrow Line Spectra Potassium and Rubidium have 6 spectral lines of various intensities, Cesium 133 14 and Helium 4 just one but very wide. Width of the spectral line depends on many parameters such as the size of cells, collision of the atoms with the walls of the cells, collision with buffer gas, spin exchange, etc. Contemporary Cs and Rb magnetometers have wide overlapping spectral lines. A composite spectral line is not symmetrical but the position of its peak depends on the geometry of the sensor and the applied magnetic field. There is a large shift in…
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Potassium Vapour Magnetometers – A Short Summary (Part 2)
By Dr. Ivan Hrvoic, President, GEM Systems, Inc. Optical Pumping of Alkali Vapours Only unpaired and free electrons exhibit spin with the features described above. Vapours of the alkali group of elements have a single, unpaired electron in their valence shell and they can be readily used as sources of electrons with spins. Helium gas in the other hand needs to be ionized in order to eliminate one electron from the valance shell; the remaining electron then behaves as an unpaired electron. In ground state 2 S1/2 the electron has 2 energy levels, or –1/2 or +1/2 spins. To polarize…
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