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Microgravity & Height

for monitoring and mapping

Precise, reliable and cost-effective data onshore and offshore.

Technology

A illustration of gravity showing a globe, apple and computer with analysis.

20 november, 2023

While measurements with precision down to one μGal (one μGal is 10–8 ms–2) have been obtained at laboratory conditions for decades (e.g., Torge, 1989), recent advances have made it practically possible to carry out field surveys at such accuracy, and stationary measurement at sub-μGal precision. This increases the potential applications of gravity to smaller and deeper targets, with lower density contrasts and monitoring over shorter time-lapse intervals.

20 november, 2023

On land, subsidence or uplift can be measured with a few mm precision by InSAR, GPS or optical levelling. Deformations can also be accurately measured by tiltmeters or strain meters. Optical or electromagnetic signals hardly penetrate to the seafloor, and the tilt/strain methods require further R&D – both on land and at sea – to find practical and economical applications. At the seafloor, water pressure can be a precise proxy for depth.

Industry news

Picture showing volcano caused by gravity.

Unlocking the potential of microgravity: A review of its role in forecasting volcanic eruptions

In a review article September 2023 published in the Journal of Volcanology and Geothermal Research, de Zeeuw-van Dalfsen and Poland argue that microgravity has untapped potential as a forecasting tool for volcanic eruptions. They conclude that the technique is currently underutilized and attention, investment, and applications at more volcanoes could help to realize its promise.

Innovative technology in gravity & seafloor height measurements

About Quad Geometrics

We are a small and dedicated team specialising in the technology of high-precision gravity and height measurements for a wide range of subsurface applications. From our base in Trondheim, Norway we provide services around the world. This can be either field measurements, data analysis or full project responsibility.

Contact us for onshore & offshore solutions

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