Microgravity - John Seach
Microgravity measurements map small changes in the force of gravity at various locations around a volcano. Gravity measurements must be made with ground deformation measurements to give useful information.
Examples of microgravity uses
erupt free flowing lava so will produce an increase in gravity as the magma
chamber fills before an eruption.
During an eruruption
microgravity measurements may indicate changes in magma vesiculation.