C. What are the apparent rates of turbidite transport based on these data? For t

Question

C. What are the apparent rates of turbidite transport based on these data? For the initial rate, please use the difference in distance and difference in time between points 1 and 2. For the second rate, please use the difference in distance and difference in time between points 2 and 5. Please report your calculated rates in units of km/s and km/hr. [Conversion: there are 3600 s in 1 hour. Hints: The first rate you calculate would get you a traffic ticket if you were driving a car down Bay Street below the UCSC campus. The second rate you calculate is about the same as the men's world record for a 400 m race set by Michael Johnson, and about that for the women's world record for a 100 m race set by Florence Griffith Joyner.]

point Time of break (sec) Distance from epicenter (km)

1 4,000 60

2 10,500 205

3 32,500 400

4 37,700 450

5 48,000 550

Is the turbidate rate constant or initially faster or slower? ---------------------------

What is the initial rate of turbidite travel? --------------------------------

What is the Second rate of turbidite travel? ----------------------------

Explanation / Answer

Given the data, we can find the initial rate of turbidite travel as follows:

Initial Rate = (Difference in distance of point 2 and 1)/ (Difference in time of break of point 2 and 1)

Difference in distance(in Kms) = 205 - 60 = 145 kms

Differnce in time of break (in Hrs) = (10500-4000)/3600 = 1.8055 hrs

Thus, I.R = 145/1.8055 = 80.31 Km/hr

For I.R in Km/s, I.R = 80.31/3600 = 0.0223 Km/s

The second rate of turbidite travel is calculated as follows:

Second Rate = (Difference in distance of point 5 and 2)/ (Difference in time of break of point 5 and 2)

Difference in distance(in Kms) = 550 - 205 = 345 kms

Differnce in time of break (in Hrs) = (48000 - 10500)/3600 = 10.41 hrs

Thus, S.R = 345/10.41 = 33.14 Km/hr

For S.R in Km/s, S.R = 33.14/3600 = 0.0092 Km/s

As we can see, the rate of turbidite travel is initially faster and then the rate decreases till the further points.

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