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  2. Gutenberg discontinuity - Wikipedia

    en.wikipedia.org/wiki/Gutenberg_Discontinuity

    The Gutenberg discontinuity occurs within Earth's interior at a depth of about 2,900 km (1,800 mi) below the surface, where there is an abrupt change in the seismic waves (generated by earthquakes or explosions) that travel through Earth. At this depth, primary seismic waves (P waves) decrease in velocity while secondary seismic waves (S waves ...

  3. Core–mantle boundary - Wikipedia

    en.wikipedia.org/wiki/Core–mantle_boundary

    The core–mantle boundary (CMB) of Earth lies between the planet's silicate mantle and its liquid iron–nickel outer core, at a depth of 2,891 km (1,796 mi) below Earth's surface. The boundary is observed via the discontinuity in seismic wave velocities at that depth due to the differences between the acoustic impedances of the solid mantle ...

  4. Seismic velocity structure - Wikipedia

    en.wikipedia.org/wiki/Seismic_Velocity_Structure

    Seismic velocity structure is the distribution and variation of seismic wave speeds within Earth's and other planetary bodies' subsurface. It is reflective of subsurface properties such as material composition, density, porosity, and temperature. [1] Geophysicists rely on the analysis and interpretation of the velocity structure to develop ...

  5. Beno Gutenberg - Wikipedia

    en.wikipedia.org/wiki/Beno_Gutenberg

    Beno Gutenberg (/ ˈ ɡ uː t ən b ɜːr ɡ /; June 4, 1889 – January 25, 1960) was a German-American seismologist who made several important contributions to the science. He was a colleague and mentor of Charles Francis Richter at the California Institute of Technology and Richter's collaborator in developing the Richter scale for measuring an earthquake's magnitude.

  6. Mohorovičić discontinuity - Wikipedia

    en.wikipedia.org/wiki/Mohorovičić_discontinuity

    The Mohorovičić discontinuity (/ ˌmoʊhəˈroʊvɪtʃɪtʃ / MOH-hə-ROH-vih-chitch; Croatian: [moxorôʋiːtʃitɕ]) [1] – usually called the Moho discontinuity, Moho boundary, or just Moho – is the boundary between the crust and the mantle of Earth. It is defined by the distinct change in velocity of seismic waves as they pass through ...

  7. Lehmann discontinuity - Wikipedia

    en.wikipedia.org/wiki/Lehmann_discontinuity

    The Lehmann discontinuity is an abrupt increase of P -wave and S -wave velocities at the depth of 220 km (140 mi) in Earth's mantle, discovered by seismologist Inge Lehmann. [2][3][4] The thickness is 220 km [citation needed]. It appears beneath continents, but not usually beneath oceans, [5] and does not readily appear in globally averaged ...

  8. Start 'Em, Sit 'Em running backs: Week 6 fantasy football - AOL

    www.aol.com/start-em-sit-em-running-093100312.html

    Kyren Williams and De'Von Achane are on bye in Week 6. Here are some start/sit replacement options for fantasy football owners to consider.

  9. Andrija Mohorovičić - Wikipedia

    en.wikipedia.org/wiki/Andrija_Mohorovičić

    Zagreb, Sava Banovina, Kingdom of Yugoslavia. Known for. Eponym for the Mohorovičić discontinuity. Andrija Mohorovičić (23 January 1857 – 18 December 1936) was a Croatian [1] geophysicist. He is best known for the eponymous Mohorovičić discontinuity and is considered one of the founders of modern seismology. [2][3]