Definition
The power spectral is used in many branches of earth sciences to carry out various mathematical operations on geophysical data to understand various earth processes and earth structure. The power spectral density is a representation of power of the signal in the frequency domain. The representation of data in the frequency domain found many applications.
Introduction
The geophysical measurements carried out in space/time represent the variations of physical measures in space/time. Exploration geophysics aims to find information about the subsurface distribution of physical properties from the surface/air/ship/satellite measurements. The distribution of physical properties in the subsurface is further interpreted to find the anomalous bodies containing hydrocarbons, minerals, water or to understand the crustal structure of the Earth. These measurements are often carried out at equal intervals along the roads (profile mode) or in a grid pattern (2-D survey), depending on the...
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Bansal, A.R., Dimri, V.P. (2023). Power Spectral Density. In: Daya Sagar, B.S., Cheng, Q., McKinley, J., Agterberg, F. (eds) Encyclopedia of Mathematical Geosciences. Encyclopedia of Earth Sciences Series. Springer, Cham. https://doi.org/10.1007/978-3-030-85040-1_254
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