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Influence of groundwater on the beach profile change

Relationships of hydrological parameters which are groundwater level, rainfall, and tides to the beach profile change of a beach are examined in order to advance understanding on swash zone morphology. Heavy rainfall and drought affect the groundwater level in Malaysia during two seasons. First, hea...

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Main Author: Rahim, Nor Suhaila
Format: Thesis
Language:English
Published: 2014
Subjects:
TC Hydraulic engineering. Ocean engineering
Online Access:http://eprints.utm.my/id/eprint/48483/1/NorSuhailaRahimMFKA2014.pdf
http://eprints.utm.my/id/eprint/48483/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:79524?queryType=vitalDismax&query=Influence+of+groundwater+on+the+beach+profile+change
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spelling my.utm.484832017-06-22T01:54:50Z http://eprints.utm.my/id/eprint/48483/ Influence of groundwater on the beach profile change Rahim, Nor Suhaila TC Hydraulic engineering. Ocean engineering Relationships of hydrological parameters which are groundwater level, rainfall, and tides to the beach profile change of a beach are examined in order to advance understanding on swash zone morphology. Heavy rainfall and drought affect the groundwater level in Malaysia during two seasons. First, heavy rainfall and storms contribute to higher groundwater level during the wet season; thereby enhance the erosion rate. Second, lesser rainfall or no rain during the dry season will drop the groundwater level and enhances the accretion rate. According to this phenomenon, seasonal variation factor has significant impact to the sediment transport due to the groundwater level effects. A field investigation is conducted at Desaru beach with three monitoring wells are installed cross shore to the beach along with a rain gauge at the upslope. A tide gauge is installed at jetty Tanjung Balau in order to record the water level. Two field works are done for one week during spring and neap tides for both seasons. From the analysis obtained, Desaru is categorised as medium-sandy beach with the mean of medium grain size, d50 = 0.37 mm. It is found that the highest rainfall occurred on July while the driest month occurred on April with no rainfall at all. Observations from both monitoring wells show that the groundwater surface is generally not flat but fluctuated with time from the Southwest to the Northeast monsoon. The beach groundwater levels in the two monitoring wells were affected by rainfall however groundwater level in the well that located near to the shore is highly affected by tidal fluctuation. Finally, it is found that beach with high groundwater level tends to erode and producing flatter gradient. 2014 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/48483/1/NorSuhailaRahimMFKA2014.pdf Rahim, Nor Suhaila (2014) Influence of groundwater on the beach profile change. Masters thesis, Universiti Teknologi Malaysia, Faculty of Civil Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:79524?queryType=vitalDismax&query=Influence+of+groundwater+on+the+beach+profile+change
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TC Hydraulic engineering. Ocean engineering
spellingShingle TC Hydraulic engineering. Ocean engineering
Rahim, Nor Suhaila
Influence of groundwater on the beach profile change
description Relationships of hydrological parameters which are groundwater level, rainfall, and tides to the beach profile change of a beach are examined in order to advance understanding on swash zone morphology. Heavy rainfall and drought affect the groundwater level in Malaysia during two seasons. First, heavy rainfall and storms contribute to higher groundwater level during the wet season; thereby enhance the erosion rate. Second, lesser rainfall or no rain during the dry season will drop the groundwater level and enhances the accretion rate. According to this phenomenon, seasonal variation factor has significant impact to the sediment transport due to the groundwater level effects. A field investigation is conducted at Desaru beach with three monitoring wells are installed cross shore to the beach along with a rain gauge at the upslope. A tide gauge is installed at jetty Tanjung Balau in order to record the water level. Two field works are done for one week during spring and neap tides for both seasons. From the analysis obtained, Desaru is categorised as medium-sandy beach with the mean of medium grain size, d50 = 0.37 mm. It is found that the highest rainfall occurred on July while the driest month occurred on April with no rainfall at all. Observations from both monitoring wells show that the groundwater surface is generally not flat but fluctuated with time from the Southwest to the Northeast monsoon. The beach groundwater levels in the two monitoring wells were affected by rainfall however groundwater level in the well that located near to the shore is highly affected by tidal fluctuation. Finally, it is found that beach with high groundwater level tends to erode and producing flatter gradient.
format Thesis
author Rahim, Nor Suhaila
author_facet Rahim, Nor Suhaila
author_sort Rahim, Nor Suhaila
title Influence of groundwater on the beach profile change
title_short Influence of groundwater on the beach profile change
title_full Influence of groundwater on the beach profile change
title_fullStr Influence of groundwater on the beach profile change
title_full_unstemmed Influence of groundwater on the beach profile change
title_sort influence of groundwater on the beach profile change
publishDate 2014
url http://eprints.utm.my/id/eprint/48483/1/NorSuhailaRahimMFKA2014.pdf
http://eprints.utm.my/id/eprint/48483/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:79524?queryType=vitalDismax&query=Influence+of+groundwater+on+the+beach+profile+change
_version_ 1643652573511548928
score 13.244368

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