Field notes
We have a lot of magnetometer spare parts for sale.
Modern Mag has developed our own backpack to hold magnetometers from GEM Systems, Geometrics and Scintrex. As a consequence, we have a LOT of used spare parts for GEM Systems backpacks and magnetometers...
Modern Mag has developed a carbon fibre and aluminium backpack for use with GEM systems, Scintrex or a Geometrics magnetometer.
This pack is lighter and much more comfortable...
Ideal for UAV or ground magnetic base station. Recently serviced by GEM.
We have for sale a used GEM Systems GSM-19 Overhauser gradiometer. It would be ideal for a base station used in tandem with a UAV magnetometer...
Scintrex and Geometrics magnetometers require heavy sealed lead acid magnetometer batteries greater than 7.2Ah in size. In contrast GEM Systems uses lightweight lithium Ion batteries and SLA batteries only 2.2Ah in size.
...For a limited time you can save thousands off the new price of a GEM Systems GSM-19 overhauser base station or rover magnetometer. Fast sampling rover (GSM-19W overhauser) magnetometers are currently CAD$11,850 and base station GSM-19 overhausers are...
Ground based magnetometer systems haven’t changed much in 12 years. The most recent change was in 2001 with the inclusion of a GPS in most magnetometers when selective availability was turned off. This...
A news report from Tsodilo Resources (TSX:TSD) on July 22nd 2013 caught my eye:
A total of 63.70 line kilometers [of ground magnetics] was covered during the month of June as area totaling 2.53 km2. The expected monthly target is 360 line kilometers...
Most magnetometers can tell you where they have been, but only a few can tell you where to go.
For efficiency, ground magnetic surveys are usually conducted along parallel survey lines – or grids. In the bad old days prior to GPS, these grids would...
Some walk the line straighter than others. Walking straighter lines when conducting ground geophysical surveys increases the production l-km in a day. Alternatively, if there is a fixed amount of work to do in the day, then straighter lines means less...
Did you know Modern Mag sells GEM systems magnetometers and spares? We have been using GEM equipment for over 17 years. We have experience with all of their magnetometers and can help you choose a system for your needs. We chose GEM magnetometers for...
Modern Mag in conjunction with GEM systems magnetometers is trialing new firmware for the GEM-19 and GSMP-35 series of magnetometers. For many years there has been a fatal flaw in the real time magnetometer navigation function. A programming error...
While any kind of magnetometer can be used as a base station magnetometer to record temporal variations in the geomagnetic field, some are more accurate and convenient than others. It is convenient to use a base station from the same manufacturer since...
As a young geophysicist I paid my dues and walked the ground magnetic survey line kilometers. It is a right of passage that teaches graduate geophysicists design, acquisition and processing skills for the most common potential field dataset. Magnetics...