Knott's equations

thumb|Diagram showing the mode conversions that occur when a P-wave reflects off an interface at non-normal incidence In geophysics, '''Knott's equations''' were the first equations to describe the amplitudes of reflected and refracted waves generated at non-normal incidence upon an interface.<ref name="SheriffGeldart"> Sheriff, R. E., Geldart, L. P., (1995), 2nd Edition. Exploration Seismology. Cambridge University Press. </ref> They were derived in 1899 by the British geophysicist Cargill Gilston Knott using displacement potential functions<ref>C. G. Knott (1899) [https://www.biodiversitylibrary.org/item/122322#page/80/mode/1up Reflection and Refraction of Elastic Waves with Seismological Applications], Philosophical Magazine 48: 64–97 via Biodiversity Heritage Library</ref> and describe the same phenomenon that the Zoeppritz equations describe in terms of amplitude displacements.

==References== {{reflist}}

Category:Seismology measurement Category:Petroleum geology