Show simple item record

dc.contributor.advisorCoe, Joseph T.
dc.creatorWagner, Trumer John
dc.date.accessioned2020-11-05T19:50:34Z
dc.date.available2020-11-05T19:50:34Z
dc.date.issued2020
dc.identifier.urihttp://hdl.handle.net/20.500.12613/4006
dc.description.abstractMultichannel Analysis of Surface Waves (MASW) has become an increasingly popular geophysical method for characterizing subsurface properties. During MASW, a linear array of geophones is used to record the motion generated by Rayleigh waves (vertical motion) or Love waves (horizontal motion). The use of Rayleigh waves for MASW has been well-researched and documented. Although less work has been devoted to understanding the full potential of Love waves, previous research efforts have indicated that Love waves present several situational advantages over Rayleigh waves. Rayleigh and Love waves are dispersive, meaning the phase velocity of the waves is frequency-dependent in a vertically heterogeneous medium. Using the data collected from the generation of Rayleigh or Love waves, a dispersion image is created. Dispersion curves are extracted from this image and an inversion process converts the dispersion curve into a shear velocity (VS) profile that is used to estimate soil stiffness. This inversion process is fundamentally nonlinear and ill-posed, without a unique solution. In other words, there are more unknown than known values and multiple “correct” solutions exist. One way in which the issue of solution non-uniqueness can be mitigated is by collecting and analyzing data from both Rayleigh and Love waves. However, Rayleigh and Love waves are typically generated by different impacts on a source – vertical and horizontal strikes, respectively. Therefore, data acquisition time is significantly increased if both Rayleigh and Love wave data is collected. No studies have systematically examined the simultaneous generation of Rayleigh and Love waves for MASW using a single impact on a single source. An angled source capable of producing both Rayleigh and Love waves with a single strike could significantly improve acquisition times of Rayleigh and Love waves and encourage their joint use for MASW applications. This research effort aims to explore optimal techniques for the simultaneous generation of Rayleigh and Love waves and compare the results to traditional MASW techniques.
dc.format.extent106 pages
dc.language.isoeng
dc.publisherTemple University. Libraries
dc.relation.ispartofTheses and Dissertations
dc.rightsIN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectCivil Engineering
dc.subjectEngineering
dc.subjectGeotechnical
dc.subjectLove
dc.subjectMasw
dc.subjectRayleigh
dc.subjectSimultaneous
dc.titleSIMULTANEOUS RAYLEIGH AND LOVE WAVE GENERATION FOR MASW DATA
dc.typeText
dc.type.genreThesis/Dissertation
dc.contributor.committeememberAbboud, Bechara E.
dc.contributor.committeememberFaheem, Ahmed
dc.description.departmentCivil Engineering
dc.relation.doihttp://dx.doi.org/10.34944/dspace/3988
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.description.degreeM.S.C.E.
refterms.dateFOA2020-11-05T19:50:34Z


Files in this item

Thumbnail
Name:
TETDEDXWagner-temple-0225M-140 ...
Size:
5.209Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record