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A gravity gradiometer can independently determine the components of the gravity vector on a real-time basis. A gravity gradient is simply the spatial derivative of the gravity vector. The gradient can be thought of as the rate of change of a component of the gravity vector as measured over a small distance. Hence, the gradient can be measured ...
Pendulums used in Mendenhall gravimeter apparatus, from 1897 scientific journal. Gravity gradiometry is the study of variations in the Earth's gravity field via measurements of the spatial gradient of gravitational acceleration.
Axial gradiometer. This device consists of two magnetometers placed in series (i.e., one above the other). The result coming from the device is the difference in magnetic flux at that point in space, in other words, the result is the difference between what each of the magnetometers detects. Biaxial gradiometer. This device consists of three ...
Geophysical surveys may use a great variety of sensing instruments, and data may be collected from above or below the Earth's surface or from aerial, orbital, or marine platforms. Geophysical surveys have many applications in geology, archaeology, mineral and energy exploration, oceanography, and engineering. Geophysical surveys are used in ...
In 1956 the 'Homer' receiver was produced, said to be the first transistorised RDF to be made available to the world's leisure marine market. Over the course of the 1950s, B&G, then based in Lymington on the south coast of England, extended its activities into echo sounders and in 1960 produced its first speedometer.
Magnetic surveys are extremely useful in the excavation and exploration of underwater archaeological sites. The apparatus used on the water slightly differs from that on land. Marine magnetometers come in two types: surface-towed and near-bottom. Both are towed a sufficient distance (about two ship lengths) away from the ship to allow them to ...
Geodesy or geodetics [1] is the science of measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D.It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems. [2]
RadExPro is a Windows-based seismic processing software system produced by RadExPro Seismic Software LLC based in Georgia. It is suitable for in-field QC (both online and offline) and processing of 3D and 2D marine and on-land seismic data, advanced processing of HR/UHR offshore seismic, [1] as well as for the onshore near-surface seismic reflection, refraction, MASW, and VSP processing.
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