Gem Systems

Why use a base station during a magnetic survey?

Earth's magnetic field is constantly changing throughout the day. These natural variations can introduce distortion into survey data if they are not properly accounted for.

The maps below show the difference.

⬅️ Without base station corrections: Notice the data distortion and alignment issues.

➡️ With base station corrections: A cleaner, more consistent dataset that better reflects the true magnetic response of the survey area.

By continuously monitoring temporal changes in Earth's magnetic field, a base station provides the reference data needed to correct rover measurements and improve the accuracy of magnetic survey results.

High-quality interpretation starts with high-quality data.

Learn more about GEM Systems' base station solutions:
https://www.gemsys.ca/base-station-solutions/

Archaeologists are increasingly turning to as a non-invasive way to investigate buried cultural features before excavation begins.

At the ancient Roman city of Tusculum in Italy, researchers combined magnetometry, EM induction, and ground penetrating radar to map subsurface archaeological features. The magnetic survey utilized the GSM-19 magnetometer as part of the integrated investigation.

Magnetic methods can help identify archaeological structures, walls, ditches, kilns, and other cultural features while minimizing disturbance to the site, making them a valuable tool for archaeological research and heritage preservation.

Learn more about our archaeological applications:
https://www.gemsys.ca/archaeological-applications/

https://www.researchgate.net/publication/271507533_Geophysical_investigations_EM_induc_tion_magnetometry_and_ground_penetrating_radar_in_the_Tusculum_archeological_site_Latium_Italy

Thanks to everyone who connected with us at last week in Aberdeen, UK.

We loved chatting with you about our . If you'd like to follow up, please send us a message at [email protected].

www.gemsys.ca

Today is our last day at in Aberdeen, UK.

Make sure to visit us at booth A223 if you haven't made it yet, we have a lot to tell you about our .

https://www.gemsys.ca/uavs-pathway-to-the-future/

We are having a great time at !

Our team is keen to meet with you, don't forget to pass by booth A223 and chat with us.

www.gemsys.ca

Our team is here in Aberdeen, UK at !
We're excited to talk to you about our !
Come see us at booth A223.
https://zurl.co/gJpZZ

See you on Monday June 8 for in Aberdeen, UK!

Come by and see our new at booth A223.

https://eageannual.org

By combining high-resolution magnetic measurements with Very Low Frequency (VLF) electromagnetic data, integrated surveys can provide valuable insight into both magnetic susceptibility contrasts and subsurface conductivity variations.

This combination is particularly effective for mapping:

✔ Faults and shear zones
✔ Conductive structures and alteration zones
✔ Geological contacts
✔ Mineralized trends concealed beneath cover

The MagVLF integrates magnetic and VLF measurements into a single UAV field system, enabling efficient acquisition of complementary geophysical datasets during the same survey.

As exploration programs continue to seek more geological context from every field campaign, integrated geophysical approaches remain a powerful tool for target generation and structural interpretation.

Learn more:

https://www.gemsys.ca/magvlf/

We love receiving these photos from the field, if you have any to share please do let us know!

Here is one from a ground survey in Tanzania.

www.gemsys.ca

Earth’s magnetic field is constantly changing — and monitoring those subtle variations plays a critical role in geomagnetism, space weather research, tectonics, and long-term Earth observation.

A recent paper on the new Pituffik (PIF) Arctic geomagnetic observatory highlighted the importance of stable, high-quality magnetic monitoring systems for continuous observatory operations in challenging environments.

GEM Systems magnetometers are used worldwide in observatory and Earth monitoring applications where sensitivity, stability, and long-term reliability are essential.

https://www.gemsys.ca/observatory-applications/

https://gi.copernicus.org/articles/15/1/2026/index.html

Pituffik (PIF), a new magnetic observatory in the Arctic Abstract. Pituffik is a newly established geomagnetic observatory located in the high Arctic – a region with sparse geomagnetic observational coverage. Positioned within the polar cap at Quasi-Dipole geomagnetic coordinates 83.19° latitude and 25.25° longitude, the observatory provides valuable ...