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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.
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.
Near-surface geophysics is the use of geophysical methods to investigate small-scale features in the shallow (tens of meters) subsurface. [1] It is closely related to applied geophysics or exploration geophysics. Methods used include seismic refraction and reflection, gravity, magnetic, electric, and electromagnetic methods.
Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. [4] In exploration geophysics , geophysical survey data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and ...
Magnetotellurics (MT) is an electromagnetic geophysical method for inferring the earth's subsurface electrical conductivity from measurements of natural geomagnetic and geoelectric field variation at the Earth's surface.
Pure and Applied Geophysics is a monthly peer-reviewed scientific journal that covers research in the field of geophysics.It is published by Birkhäuser and the editors-in-chief are Carla F. Braitenberg (University of Trieste), Alexander B. Rabinovich (Russian Academy of Sciences), and Renata Dmowska (Harvard University).
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 ...
Geomathematics (also: mathematical geosciences, mathematical geology, mathematical geophysics) is the application of mathematical methods to solve problems in geosciences, including geology and geophysics, and particularly geodynamics and seismology.