Global Journal of Science Frontier Research, A: Physics and Space Science, Volume 23 Issue 1

Inside the planet, if considered separately from external forces, the total gravitational attraction vector at any point is directed towards the center, and the value of the force decreases to zero at the center where the bi- directional attraction from the peripheral masses is compensated. If external gravitational forces are absent, the heavy components of the planet's matter will strive to sink into the central region, driving the lighter ones closer to the surface. Therefore, the regions where denser masses can accumulate are located in the center of the planet and closest to the external source of gravity and the inner side of the crust. Since the main external sources are two - the Sun- distant but powerful, and the Moon- much less massive but close, then there are three places of accumulation of heavy masses. Two of them are very dynamic, and the central one should be subject to oscillation and may even follow the first two. It is currently impossible to determine. Measurements based on single seismic waves cannot reflect the real picture due to the speed of events. Perhaps additional measurements of gravitational forces will be required. In our case, to describe the phenomena on the surface, it does not play a decisive role. For simplicity of description, let's assume that it moves. Let's call it the heavy part of the planet's core. Let's consider the gravitational forces from which masses affect the readings of the gravimeter sensor. (Fig. 1.) − F з is the constant force of attraction of a planet's stationary mass. − F л is the variable force of attraction of the Moon. − F я 1 is the variable force of attraction from the mass of the core attracted by the Moon. − F я 2 is the variable force of attraction from the mass of the core attracted by the Sun. − Fc is the variable force of attraction of the Sun. At the same time, F я 1 and F я 2 depend on the values of Fc and F л , as well as on the position of the Sun and the Moon relative to each other and to the Earth. In addition, the data measurements are affected by the location of the masses attracted by the Sun and the Moon, as the projections on the vertical are measured, and the same mass located directly under the sensor will show a higher value than one at the same distance but at an angle. a) Seasonal shifts in the trajectory of the core movement In reality, the heavy part of the core moves from East to West and in a spiral North-South and back, with a change in the planet's position relative to the Sun (change of season). (Fig. 2) © 2023 Global Journals 1 Year 2023 44 Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( A ) The New View at the Physics of the Planet Earth Fig. 1: Schematic diagram of forces composing the readings of the gravimeter