geodynamics
91Overburden pressure — Overburden pressure, also called lithostatic pressure or vertical stress, is the pressure or stress imposed on a layer of soil or rock by the weight of overlying material. The overburden pressure at a depth z is given by where ρ(z) is the density …
92Earth's magnetic field — Computer simulation of the Earth s field in a normal period between reversals.[1] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and… …
93Northrop Grumman — Corporation Type Public Traded as NYSE: NOC …
94Figure of the Earth — An oblate spheroid Geodesy …
95Dynamo theory — In geophysics, dynamo theory proposes a mechanism by which a celestial body such as the Earth or a star generates a magnetic field. The theory describes the process through which a rotating, convecting, and electrically conducting fluid can… …
96National Weather Service — NWS Agency overview Formed February 9, 1870 Jurisdiction …
97Met Office — UKMET redirects here. For the model, see Unified Model. Met Office Current logo, as of 2009 Agency overview Formed 1854 Jurisdiction …
98Royal Astronomical Society — This article is about the British Society. For the Canadian Society, see Royal Astronomical Society of Canada. The entrance to the Royal Astronomical Society at Burlington House. The Royal Astronomical Society (RAS) is a learned society that… …
99Mantle plume — A superplume generated by cooling processes in the mantle.[1] A mantle plume is a hypothetical thermal diapir of abnormally hot rock that nucleates at the core mantle boundary and rises through the Earth s mantle. Such plumes were invoked in 1971 …
100Yellowstone Caldera — The northeastern part of Yellowstone Caldera, with the Yellowstone River flowing through Hayden Valley and the caldera rim in the distance …
