Development Direction
LOGG provides accurate absolute gravity values as the national gravity reference. By studying continuous, very small gravity variations and analysing the sources of anomalies, it opens new milestones for hazard monitoring, resource exploration, environmental change studies, metrological standards and satellite orbit determination in Taiwan.
The superconducting gravimeter is an integrated gravity sensor that records the small, continuous changes in gravity caused by mass redistribution in the surroundings. Since it reflects the total gravity change, individual sources cannot be displayed directly, but can be separated by subsequent analysis.
Historically, researchers abroad focused on global gravity effects such as Earth tides, core modes, the nearly-diurnal free wobble and polar motion. When studying a particular effect the others are treated as noise and removed from the data.
Today, the assessment of regional environmental change—combined with GPS-derived crustal deformation, tectonic interpretation and seismic monitoring—has become one of the major application directions.