https://padlet.com/selinea2469937/tf2nito7wvwti79k The development of seismology en-us 2021-12-06 03:20:18 UTC 2021-12-06 19:12:34 UTC hello@padlet.com selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1930277923 There were a lot who were claimed to have discovered and invented Seismology and I will talk about them as we go.]]> 2021-12-06 03:23:30 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1930277923 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931891188 Seismology is the branch of science studying earthquakes.]]> 2021-12-06 18:43:15 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931891188 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931897618 In 1857, Robert Mallet said to have laid the foundation of instrumental seismology. He also carried out seismological experiments using explosives.]]> 2021-12-06 18:46:05 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931897618 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931907918 In 1755, an earthquake called The Lisbon earthquake made John Mitchell determine that earthquakes originate within the Earth and were waves of movement caused by "shifting masses of rock miles below the surface."]]> 2021-12-06 18:50:33 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931907918 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931912555 In 1897, Emil Wiechert's calculations(theoretical) led him to a conclusion that the Earth's interior consists of a mantle of silicates, surrounding a core of iron. ]]> 2021-12-06 18:52:34 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931912555 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931937902 In 1906, Richard Dixon Oldham identified the separate arrival of P-waves, S-waves, and Surface waves on seismographs and found the first ever clear evidence that the Earth has a central core.]]> 2021-12-06 19:03:21 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931937902 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931943754 In 1909, one of the founders of modern seismology, Andrija Mohorovičić, discovered and defined the Moho discontinuity.

]]> 2021-12-06 19:05:52 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931943754 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931948075 The Moho discontinuity or the Moho is the boundary between the Earth's crust and the mantle, defined by the change in velocity of seismological waves as they pass through changing densities of rock.]]> 2021-12-06 19:07:56 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931948075 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931950880 In 1926, Harold Jeffreys was the first to claim that below the mantle, the core of the Earth is liquid.]]> 2021-12-06 19:09:07 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931950880 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931954298 In 1937, Inge Lehmann determined that within Earth's liquid outer core there is a solid inner core. ]]> 2021-12-06 19:10:37 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931954298 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931957018 BY the 1960s, a now well-established theory of plate tectonics has been developed. ]]> 2021-12-06 19:11:40 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931957018 selinea2469937 https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931958416 2021-12-06 19:12:20 UTC https://padlet.com/selinea2469937/tf2nito7wvwti79k/wish/1931958416