dc.contributor.advisor | Cartwright, Nick | |
dc.contributor.author | Jafari, Alireza | |
dc.date.accessioned | 2018-01-23T02:45:42Z | |
dc.date.available | 2018-01-23T02:45:42Z | |
dc.date.issued | 2013 | |
dc.identifier.doi | 10.25904/1912/1957 | |
dc.identifier.uri | http://hdl.handle.net/10072/366745 | |
dc.description.abstract | Surfzone wave transformation under storm conditions is investigated through field and laboratory
measurements in this study. The observations have been used to examine currently available
models of wave energy dissipation.
Detailed field data has been collected by means of a novel method which was first introduced by
Nielsen (1988). This method has been utilised through a common program between Griffith
University and The University of Queensland at The Spit on the Gold Coast in Southeast
Queensland. The facility primarily consists of a manometer tube array with 12 different manometer
tube lengths varying from 60 m to 500 m offshore and a concrete manhole excavated into the dune
system to house the monitoring station. Accordingly, this system has enabled the monitoring of a
detailed wave height profile across the surfzone under any conditions from the safety of the
“bunker” on land.
The findings of new laboratory experiments on the frequency response of the semi-rigid
manometer tubes are also presented which extend and improve upon the previous work of Nielsen
et al. (1993). Testing was conducted over a range of frequencies (0.0067 Hz< f <2 Hz) and tube
lengths (10 m< L <900 m). New frequency response factors are determined by fitting the semiempirical
gain function of Nielsen et al. (1993) to the observed gain data. As a result, new
predictive formulas for the empirical coefficients as a function of tube parameters are provided in
this study.
Wave induced pore pressure in the surfzone seabed is investigated based on the recorded field data.
Two well-known models, i.e. Hsu and Jeng (1994) and Sleath (1970), are assessed against the
field measurements. The findings validate the accuracy of the models and indicate that the extent of
energy dissipation due to the overlying sand is less than 5% and depends on the incident wave
length. | |
dc.language | English | |
dc.publisher | Griffith University | |
dc.publisher.place | Brisbane | |
dc.rights.copyright | The author owns the copyright in this thesis, unless stated otherwise. | |
dc.subject.keywords | Surfzone | |
dc.subject.keywords | Waves | |
dc.subject.keywords | Wave mechanics | |
dc.title | Analysis and Prediction of Wave Transformation from Offshore into the Surfzone under Storm Condition | |
dc.type | Griffith thesis | |
gro.faculty | Science, Environment, Engineering and Technology | |
gro.rights.copyright | The author owns the copyright in this thesis, unless stated otherwise. | |
gro.hasfulltext | Full Text | |
dc.contributor.otheradvisor | Zhang, Hong | |
dc.rights.accessRights | Public | |
gro.identifier.gurtID | gu1386306352654 | |
gro.source.ADTshelfno | ADT0 | |
gro.source.GURTshelfno | GURT | |
gro.thesis.degreelevel | Thesis (PhD Doctorate) | |
gro.thesis.degreeprogram | Doctor of Philosophy (PhD) | |
gro.department | Griffith School of Engineering | |
gro.griffith.author | Jafari, Alireza | |