Mobile quantum gravity sensor with unprecedented stability

Understand

Changes of surface gravity on Earth are of great interest in geodesy, earth sciences and natural resource exploration.

• They are indicative of Earth system's mass redistributions and vertical surface motion, and are usually measured with falling corner-cube- and superconducting gravimeters (FCCG and SCG).
• Here we report on absolute gravity measurements with a mobile quantum gravimeter based on atom interferometry.
• The measurements were conducted in Germany and Sweden over periods of several days with simultaneous SCG and FCCG comparisons.