Abstract Geodetic observation methods, e.g., satellite gravimeter and Global Navigation Satellite System (GNSS), are mainly used for determining the Earth’s gravity field reference system. However, many efforts have been made to adopt mentioned methods estimating hydrological dynamics. The of Gravity Recovery Climate Experiment its Following-On missions (GRACE/GRACE-FO) proven capture terrestri...

Abstract In an absolute gravimeter based on optical interferometry, the rotation of a falling body leads to inaccurate gravity measurement. By arranging center mass (COM) together with its (OC), error can be minimized rapidly. An measurement system two-stage pendulum structure is proposed measure distance between COM and OC body. The displacement measured by orthogonal interferometer while twis...

Abstract Geophysical surveys were conducted in the Lahun area (Fayoum, Egypt). The is known to have been royal necropolis during period of Senusret II (1897–1878 BC), where he built his pyramid. Integrated magnetic and gravity measurements applied investigate five locations area. survey was implemented areas chambers, shafts, or cavity-like structures are expected, mudbrick expected. using a Ge...