Geophysicist measuring gravity near Point Buchon, California

Research Geophysicist measuring gravity near Point Buchon, coastal California. The instrument measures very small variations of the Earth's gravity field, which can then be processed to reflect variations of the Earth's gravity field, which can then be processed to reflect variations in rock density within the Earth's crust. This technique is useful for identifying faults that may not be easily mapped at the surface because of urbanization or very young deposits and for mapping the shape of sedimentary basins.