Calculating Velocities, dip and depth of a refractor

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SUMMARY

The discussion focuses on calculating seismic velocities (V1 and V2), dip, and depth (h) of a refractor using data from a 225m spread of 16 geophones. The primary formula utilized is v=(x2-x1)/(t2-t1), where v represents velocity, x1 and x2 are distances from the shot point, and t1 and t2 are the respective times of arrival of seismic waves. Participants emphasized the importance of plotting time against distance to visualize the data effectively. Additional resources, such as the Berkeley Applied Geophysics PDF, were recommended for further understanding of refraction calculations.

PREREQUISITES
  • Understanding of seismic wave propagation and refraction principles
  • Familiarity with plotting data in graphs
  • Knowledge of LaTeX for presentation formatting
  • Basic skills in interpreting geophysical data
NEXT STEPS
  • Study the "7.2.3 Time – Distance Plots" section in the Berkeley Applied Geophysics PDF
  • Learn how to calculate seismic velocities using the refraction method
  • Explore advanced plotting techniques for seismic data visualization
  • Review LaTeX documentation for creating professional presentations
USEFUL FOR

Geophysicists, seismic data analysts, and students studying applied geophysics who need to calculate and interpret seismic velocities and refractor characteristics.

loya Blaise
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https://scontent-vie1-1.xx.fbcdn.net/v/t34.0-12/14955857_1113106435476531_5016282393940245289_n.jpg?oh=c2e50935ccd57a0863d5f00c5b56653a&oe=5821DD35

Shot point A and B are located at a 225m spread of 16 geophones. Using the data in the attachment, Find
1. The Velocities, V1and V2
2. The Dip()
3. The depth of the refractor, h

My understanding of the Problem
v=(x2-x1)/(t2-t1),,where V is d velocity and x1, x2 are distances of any two recording stations from the shot point(source),, t1 and t2 are the times of arrival of the seismic wave at d same stations.

i have tried ploting tA against Xa, and tB against Xb all on the same graph. but don't just know what to do nest.please help me out
 
Is there some reason the attachment won't open? It would help to know what other data you were given. Until I can think up a simple plan to attack the problem, try this source. My other problem is that I've always had an assistant do my LaTex presentations and I'd still be typing my reply next Tuesday. I would like to see what else is on the attachment.

http://appliedgeophysics.berkeley.edu/seismic/seismic_23.pdf
7.2.3 Time – Distance Plots
Refraction calculations start on page 15.
 

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