| Author | Sen, Ashok Kumar |
| Call Number | AIT Thesis no. GT-88-26 |
| Subject(s) | Seismic refraction method--Computer programs
|
| Note | A thesis submitted in partial fulfillment of
the requirement for the degree of Master of Science, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GT-88-26 |
| Abstract | This thesis concentrates on the development of computer programs
based on the delay-time and the generalized reciprocal methods for the
interpretation of seismic refraction data. A comparison of the results
interpreted from both these methods is also provided. This comparative
study is based on the computational time required by the two methods, the
accuracy of the velocity obtained, the effect of the planarity condition
and the smoothening effect. In comparison to the GRM, it is found that the
delay-time method gives a much better representation of the subsurface
velocities. The intensity of smoothening effect seems to be less for the
delay-time method and in this case a correction factor has to be applied
for non-planar refractor. The manual computational time for the GRM is
much greater, in comparison to the delay-time method. Furthermore, a
computer program for generating synthetic time-distance data using the
ray-theory approach for different three layer earth model has been
developed. Generating first arrivals can be extremely useful when limited
coverage of the shallow refractor occurs in a three layer case. The
delay-time program is utilized in order to interpret the actual field data
from the Caledonian dam-site (Kotmale Project) in Sri-lanka. |
| Year | 1989 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GT-88-26 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Rantucci, Giovanni |
| Examination Committee(s) | Prinya Nutalaya ;Kuwano, Jiro ;Indraratna, Buddhima
|
| Scholarship Donor(s) | U.N.D.P ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1989 |