Earth Gravitational Model (EGM)

The Earth Gravitational Model (EGM) is a detailed mathematical representation of Earth's gravity field. It captures variations in gravitational pull caused by factors like the planet's shape, density differences, and underground structures. These models are built using satellite data and measurements, allowing scientists to understand how gravity changes across different locations. This information is vital for accurate satellite navigation, geographic mapping, and understanding Earth's interior. In essence, EGM helps us precisely map the subtle variations in Earth's gravity, leading to better scientific and practical applications related to Earth's physical properties.