Determination of depths of closure along the Kelantan coast

The design of beach-fill in beach nourishment works requires knowledge of the cross-shore sediment transport process. By the theory of equilibrium profiles, beachfill material will be redistributed across the shore profile up to a seaward limit known as the depth of closure or Dc. The determination...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohd. Ghazali, Nor Hisham
Format:	Thesis
Language:	English
Published:	2007
Subjects:	TC Hydraulic engineering Ocean engineering
Online Access:	http://eprints.utm.my/id/eprint/6799/1/NorHishamMohdGhazaliMFKA2007.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.6799
record_format	uketd_dc
spelling	my-utm-ep.67992018-08-30T08:03:52Z Determination of depths of closure along the Kelantan coast 2007-02 Mohd. Ghazali, Nor Hisham TC Hydraulic engineering. Ocean engineering TA Engineering (General). Civil engineering (General) The design of beach-fill in beach nourishment works requires knowledge of the cross-shore sediment transport process. By the theory of equilibrium profiles, beachfill material will be redistributed across the shore profile up to a seaward limit known as the depth of closure or Dc. The determination of the depth of closure is a key component of beach-fill design and is measured in the field from the study of periodical surveys over the same beach profiles. The Hallermeier equation which relies on the incident pre-breaking wave height is the only analytical means to predict the depth of closure. This study has examined the applicability of the Hallermeier equation in predicting depth of closure for the coastline of Pantai Sabak, Kelantan using nearshore waves which were transformed from offshore waves through numerical modelling. The predicted depth of closure was compared against measured depth of closure at 13 profiles that were surveyed in 1998, 1999, 2000 and 2004. The widely-accepted Standard Deviation of Depth Change (SDDC) and Fixed Depth Change (FDC) methods to determine Dc were both explored and the Dc for monsoon, annual and 5-year events were investigated. The research found that along the study shoreline at Pantai Sabak, more than one closure point can occur across the same profile over the seasonal and annual period. Hallermeierâ€™s equation overpredicts annual Dc by 43% and affirms previous findings that the predictive equation determines an upper limit value of Dc. Within the limitations of the survey data available, the annual depth of closure at Pantai Sabak can be equated to 1.5 times H0.137. 2007-02 Thesis http://eprints.utm.my/id/eprint/6799/ http://eprints.utm.my/id/eprint/6799/1/NorHishamMohdGhazaliMFKA2007.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:62519 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TC Hydraulic engineering Ocean engineering TC Hydraulic engineering Ocean engineering
spellingShingle	TC Hydraulic engineering Ocean engineering TC Hydraulic engineering Ocean engineering Mohd. Ghazali, Nor Hisham Determination of depths of closure along the Kelantan coast
description	The design of beach-fill in beach nourishment works requires knowledge of the cross-shore sediment transport process. By the theory of equilibrium profiles, beachfill material will be redistributed across the shore profile up to a seaward limit known as the depth of closure or Dc. The determination of the depth of closure is a key component of beach-fill design and is measured in the field from the study of periodical surveys over the same beach profiles. The Hallermeier equation which relies on the incident pre-breaking wave height is the only analytical means to predict the depth of closure. This study has examined the applicability of the Hallermeier equation in predicting depth of closure for the coastline of Pantai Sabak, Kelantan using nearshore waves which were transformed from offshore waves through numerical modelling. The predicted depth of closure was compared against measured depth of closure at 13 profiles that were surveyed in 1998, 1999, 2000 and 2004. The widely-accepted Standard Deviation of Depth Change (SDDC) and Fixed Depth Change (FDC) methods to determine Dc were both explored and the Dc for monsoon, annual and 5-year events were investigated. The research found that along the study shoreline at Pantai Sabak, more than one closure point can occur across the same profile over the seasonal and annual period. Hallermeierâ€™s equation overpredicts annual Dc by 43% and affirms previous findings that the predictive equation determines an upper limit value of Dc. Within the limitations of the survey data available, the annual depth of closure at Pantai Sabak can be equated to 1.5 times H0.137.
format	Thesis
qualification_level	Master's degree
author	Mohd. Ghazali, Nor Hisham
author_facet	Mohd. Ghazali, Nor Hisham
author_sort	Mohd. Ghazali, Nor Hisham
title	Determination of depths of closure along the Kelantan coast
title_short	Determination of depths of closure along the Kelantan coast
title_full	Determination of depths of closure along the Kelantan coast
title_fullStr	Determination of depths of closure along the Kelantan coast
title_full_unstemmed	Determination of depths of closure along the Kelantan coast
title_sort	determination of depths of closure along the kelantan coast
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2007
url	http://eprints.utm.my/id/eprint/6799/1/NorHishamMohdGhazaliMFKA2007.pdf
_version_	1747814688838647808

Determination of depths of closure along the Kelantan coast

Similar Items