Earth Sciences 2220A/B Study Guide - Quiz Guide: Shear Modulus, Bulk Modulus, Seismic Wave
20 Feb 2019
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Due: feb 5, 2019: (10 marks) a material has a shear modulus of 35. 0 gpa, a bulk modulus of 18. 5. Vp = (((1/ ) x ( + 4/3 )/ 1000) Vp = (((1/2910)(18. 5 + (4/3(35. 0))) / 2910) Vp = 0. 150 km / s: (10 marks) the velocity of the s-wave propagating through a rock is 3200 m/s. The density of the rock is 2790 kg/m3. = 29. 6 gpa: (15 marks) subsurface consists of three horizontal layers with different seismic velocities. The top layer has a seismic velocity of 2. 5 km/s. A seismic wave travels from the source near the surface with one particular ray path approaching the interface between layers 1 and 2 at an incidence angle of 25o. The ray gets refracted at this interface into the second layer at an angle of 35o. The same ray continues to travel and gets refracted at the second interface (between layers 2 and 3) at an angle of 50o.
