There was a reduction in the local gravity field, and the length of day was shortened by 1.8 microseconds, after the quake thinned the earth's crust and accelerated its spin.

Through a supraconductive gravimeter, the observatory provides relative and continuous gravity field measurements.

Other inventions include the precise measurement of the earth's gravity field from surface ships, previously hampered by the inherently instability of the ship platform.

By sensing the gravity field at each segment, the bend angles between each segment can be calculated.

When operating, it can cause significant increases in the local gravity field.