ERTH 4801 Lecture Notes - Lecture 9: Bulk Modulus, Seismic Wave, Seismogram
11 Feb 2016
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Document Summary
The outer core depth mantle to core boundary: 2900 km and to boundary of inner core is 1500 km. Velocity distribution to the earth and density measures. = can calculate the velocity and the density is the gravity. Spherical symmetric model: properties of a function of depth in lateral variations. Earth has rigidity of a steal at high frequencies. Seismic waves result in bulk modulus and rigidity of mantle: 10^10- 10^11. Pa if material is homogeneous pressure and temperature are of opposite sign. The base of the crust depth in which p waves are 8. 0 km /s or larger. To define the mantle transition zone, it jumps: the variation in composition or lattice structure. Below a depth of 700km the lower mantle is homogeneous. D prime layer is lower most layer of mantle. S waves disappear and p waves go through or change. Iron nickel fes metallic conductor= increase electric field.
