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Consider the three layers described below. All layers have the same density. a. We’re interested in the seismogram that would be obtained at zero offset. Consider the reflection from the top of layer 2: What is the travel time for that reflection event and what is the value of the reflection coefficient? b. Consider the reflection from the top of layer 3. What is the travel time for that reflection event and what is the value of the reflection coefficient? c. Compute the transmission coefficients associated with waves that travel through the first interface; that is, the transmission coefficients for the downward and upward

Consider the three layers described below. All layers have the same density. a. We’re interested in the seismogram that would be obtained at zero offset. Consider the reflection from the top of layer 2: What is the travel time for that reflection event and what is the value of the reflection coefficient? b. Consider the reflection from the top of layer 3. What is the travel time for that reflection event and what is the value of the reflection coefficient? c. Compute the transmission coefficients associated with waves that travel through the first interface; that is, the transmission coefficients for the downward and upward

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Consider the three layers described below. All layers have the same density.
a. We’re interested in the seismogram that would be obtained at zero offset. Consider the reflection from the top of layer 2: What is the travel time for that reflection event and what is the value of the reflection coefficient?
b. Consider the reflection from the top of layer 3. What is the travel time for that reflection event and what is the value of the reflection coefficient?
c. Compute the transmission coefficients associated with waves that travel through the first interface; that is, the transmission coefficients for the downward and upward travelling waves.
d. Plot the final reflectivity log as a function of time. Make sure you provide the amplitude of each event.
e.  Now consider the refracted wave along the first interface: What is the shortest offset you could measure the refracted wave?
f. Why would you not expect refraction before this offset? 
g. Where would the refracted wave overtake the direct arrival?

V = 400 m/s h = 20 m %3D V2 = 1000 m/s h, = 100 m V3= 500 m/s h, = 0
Transcribed Image Text:V = 400 m/s h = 20 m %3D V2 = 1000 m/s h, = 100 m V3= 500 m/s h, = 0
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