Gravity map reveals Earth's extremes. Rotate. A Map of Earth’s Gravity (Feedloader (Clickability)) By Sarah Zielinski smithsonianmag.com July 2, 2010. But that's not actually strictly true. Varying surface topography and the continuous movement of water cause different parts of the globe to have more or less mass than other regions.

World Gravity Map (WGM) denotes a set of 3 global anomaly maps of the Earth’s gravity field realized by the Bureau Gravimétrique International (BGI), a service of the International Association of Geodesy (IAG). It was recorded by the European Space Agency's GOCE satellite. Gravity anomalies are often due to unusual concentrations of mass in a region. While we commonly quote the gravitational force … Earth 19 August 2013 By Jacob Aron. 2 Minute Read In physics class we're taught that Earth's gravity is 9.8 meters per second squared. The anomalies highlight variations in the strength of the gravitational force over the surface of the Earth. The new Earth gravity map, which was unveiled in late March, is the most accurate model of gravity fluctuations around the world. You'll often here people saying gravity on Earth is a constant, 9.81 ms-2. New Gravity Map Reveals Lumpy Earth The best map yet of Earth's gravity field can help track ocean currents and study the forces behind major earthquakes, experts say. Earth's mass, however, isn't distributed evenly. There are small fluctuations across the surface, in the rigion of +/- 50 milligals, where 1 Gal is defined as 1cm per second squared. GOCE managed to map the gravitational strength of the Earth beneath it to a precision of 10 –5 m/s 2.

Go to Mount Everest (middle) if you want to lose weight (Image: GGMplus/Curtin University) Want to lose weight fast? Gravity anomaly maps (see globe below) show how much the Earth’s actual gravity field differs from the gravity field of a uniform, featureless Earth surface. 3d Model of Earth's gravity fluctuations Physics Astronomy Maps Gravity. Since 2002, NASA's twin GRACE satellites have mapped Earth's gravity (the attractive force exerted by its mass), enabling scientists to see these differences and monitor how they change over time.

Map of Earth's Gravity. Animate.