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2. Free-air gravity anomaly - Wikipedia

   en.wikipedia.org/wiki/Free-air_gravity_anomaly

   Circular free-air gravity anomaly over the Chicxulub Crater. In geophysics, the free-air gravity anomaly, often simply called the free-air anomaly, is the measured gravity anomaly after a free-air correction is applied to account for the elevation at which a measurement is made.

3. Fraser filter - Wikipedia

   en.wikipedia.org/wiki/Fraser_Filter

   A Fraser filter, named after Douglas Fraser, is typically used in geophysics when displaying VLF data. It is effectively the first derivative of the data. If f ( i ) = f i {\displaystyle f(i)=f_{i}} represents the collected data then a v e r a g e 12 = f 1 + f 2 2 {\displaystyle average_{12}={\frac {f_{1}+f_{2}}{2}}} is the average of two values.

4. Thomas Telford - Wikipedia

   en.wikipedia.org/wiki/Thomas_Telford

   Thomas Telford FRS FRSE (9 August 1757 – 2 September 1834) was a Scottish civil engineer. After establishing himself as an engineer of road and canal projects in Shropshire, he designed numerous infrastructure projects in his native Scotland, as well as harbours and tunnels.

5. History of geophysics - Wikipedia

   en.wikipedia.org/wiki/History_of_geophysics

   In 1898, a Geophysical Institute was founded at the University of Göttingen, and Emil Wiechert became the world's first Chair of Geophysics. [3] An international framework for geophysics was provided by the founding of the International Union of Geodesy and Geophysics in 1919.

6. Bouguer anomaly - Wikipedia

   en.wikipedia.org/wiki/Bouguer_anomaly

   In geodesy and geophysics, the Bouguer anomaly (named after Pierre Bouguer) is a gravity anomaly, corrected for the height at which it is measured and the attraction of terrain. [1] The height correction alone gives a free-air gravity anomaly. Bouguer anomaly map of the state of New Jersey (USGS)

7. Robert E. Sheriff - Wikipedia

   en.wikipedia.org/wiki/Robert_E._Sheriff

   Robert E. Sheriff (19 April 1922 – 19 November 2014) was an American geophysicist best known for writing the comprehensive geophysical reference, Encyclopedic Dictionary of Exploration Geophysics. His main research interests included the seismic detailing of reservoirs , in 3-D seismic interpretation and seismic stratigraphy , and practical ...

8. Frank D. Stacey - Wikipedia

   en.wikipedia.org/wiki/Frank_D._Stacey

   with Subir K. Banerjee The physical principles of rock magnetism, Elsevier 1974 ISBN 0-444-41084-8 book description from Elsevier as editor with M. S. Paterson and A. Nicolas Anelasticity in the Earth , Geodynamics Series, Vol. 4, American Geophysical Union/Geological Society of America 1981

9. Magnetic anomaly - Wikipedia

   en.wikipedia.org/wiki/Magnetic_anomaly

   In geophysics, a magnetic anomaly is a local variation in the Earth's magnetic field resulting from variations in the chemistry or magnetism of the rocks. Mapping of variation over an area is valuable in detecting structures obscured by overlying material.