Gutenberg jean

1912 · 67167 — 1912. Nachr. Ges. Wiss. Gött. 1912. - Göttigen 1912 8° pp.121-206 20 Figuren orig. Broschur. Rare Offprint! Karl Bernhard Zoeppritz 1881-1908 geophysicist who made important contributions to seismology in particular the formulation of the Zoeppritz equations. These equations relate the amplitudes of P-waves and S-waves at each side of an interface between two arbitrary elastic media as a function of the angle of incidence and are largely used in reflection seismology for determining structure and properties of the subsurface. Using Wiechert's theoretical work and data from earthquakes including the 1905 Kangra earthquake 1905 Calabria earthquake and the 1906 San Francisco earthquake Zoeppritz's most important early contribution was the construction of travel-time curves - and their associated velocity-depth functions - for P-waves S-waves and surface waves recognising for the first time that body waves are reflected and converted at discontinuities. These curves were later used by other members of the research group Ludwig Carl Geiger and Beno Gutenberg as well as the British astronomer and seismologist Herbert Hall Turner at the International Seismological Summary. The related ill-posed inverse problem of inferring a discrete velocity distribution representing the layers of the crust and mantle was solved by fellow Göttingen mathematician Gustav Herglotz. unknown