EESA06H3 Lecture Notes - Lecture 3: Fault Scarp, Seismic Tomography, Seismic Gap
Document Summary
Lecture 3 probing the earth"s deep interior the earth"s interior. Seismic tomography is using the energy from the earthquakes to map the interior of the planet. Energy in the form of wavesp and s waves. Primary waves are higher velocity and are felt first. Focus is where an earthquake is trigger (could be 700 km deep) Epicentre is the place on the earth surface above of the focus. Seismograph is a machine to measure displacements of the earth"s crust during an earthquake. Shadow zones dont have p and s waves. Geothermal gradientrelease of heat from the underneath the planet to the surface. Heat flow and gravity method for mapping deep structure. Entered via lava tubes at snaefellsjokull, iceland and exited at stromboli volcano, italy. Exploiting the mantle to get some more minerals - difficulty comes from heat and softening of steel drill. Jules verne : journey to the center of the earth.
