The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah

A study regarding the influence of seasonal changes on . physico-chemical characteristics of seawater was conducted in coastal area of Sepangar and Gaya Bays, Kota Kinabalu, Sabah. The objectives of study were to determine the physico-chemical characteristics of seawater (temperature, salinity, diss...

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Main Author:	Tamrin Toha
Format:	Thesis
Language:	English
Published:	2008
Subjects:	GC100-103 Seawater
Online Access:	https://eprints.ums.edu.my/id/eprint/3763/1/mt0000000038.pdf
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spelling	my-ums-ep.37632017-11-14T07:34:11Z The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah 2008 Tamrin Toha GC100-103 Seawater A study regarding the influence of seasonal changes on . physico-chemical characteristics of seawater was conducted in coastal area of Sepangar and Gaya Bays, Kota Kinabalu, Sabah. The objectives of study were to determine the physico-chemical characteristics of seawater (temperature, salinity, dissolved oxygen, pH, total suspended solid and nutrients) and the effect of seasonal changes and current on the distribution of those parameters. Sampling were conducted at eight stations during inter monsoon (March - May), Southwest monsoon (July - September) and Northeast monsoon (December - February) from 2006 to 2007. Temperature, DO, salinity and pH were measured in-situ using multi probe sensor (Hydrolab surveyor 4a). Current measurements were recorded using current meter (Aquadop Nortex). Total suspended solids and nutrients (ammonia, nitrite, nitrate and phosphate) were performed using Standard method as suggested by APHA and Parsons respectively. The results of study showed that salinity were ranged between 29.47 - 34.75 ppt which achieve its peak value during 1M season due to low precipitation, nitrate concentrations ranged between 0.15 - 202.41 Âµg/I and achieve its peak value during SW monsoon due to high precipitation. While, DO, pH, TSS, N02 and P04 were found relative higher during NE monsoon compared to other season which in range from 2.03 - 16.18 mg/l, 6.5 - 8.74, 0.20 - 298.0 mg/l, 0.07 - 46.43 Âµg/I and 0.04 - 156.25 Âµg/I respectively. Current circulation at the study area was influenced by local wind and tidal current. Total suspended solid, seawater temperature, ammonia and nitrite were higher during ebb current. The pH, nitrate-nitrogen and phosphate-phosphorus were higher during flood current. Whereas, dissolved oxygen and salinity did not show significant difference during ebb current and flood current. 2008 Thesis https://eprints.ums.edu.my/id/eprint/3763/ https://eprints.ums.edu.my/id/eprint/3763/1/mt0000000038.pdf text en public masters Universiti Malaysia Sabah Borneo Marine Research Institute
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English
topic	GC100-103 Seawater
spellingShingle	GC100-103 Seawater Tamrin Toha The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah
description	A study regarding the influence of seasonal changes on . physico-chemical characteristics of seawater was conducted in coastal area of Sepangar and Gaya Bays, Kota Kinabalu, Sabah. The objectives of study were to determine the physico-chemical characteristics of seawater (temperature, salinity, dissolved oxygen, pH, total suspended solid and nutrients) and the effect of seasonal changes and current on the distribution of those parameters. Sampling were conducted at eight stations during inter monsoon (March - May), Southwest monsoon (July - September) and Northeast monsoon (December - February) from 2006 to 2007. Temperature, DO, salinity and pH were measured in-situ using multi probe sensor (Hydrolab surveyor 4a). Current measurements were recorded using current meter (Aquadop Nortex). Total suspended solids and nutrients (ammonia, nitrite, nitrate and phosphate) were performed using Standard method as suggested by APHA and Parsons respectively. The results of study showed that salinity were ranged between 29.47 - 34.75 ppt which achieve its peak value during 1M season due to low precipitation, nitrate concentrations ranged between 0.15 - 202.41 Âµg/I and achieve its peak value during SW monsoon due to high precipitation. While, DO, pH, TSS, N02 and P04 were found relative higher during NE monsoon compared to other season which in range from 2.03 - 16.18 mg/l, 6.5 - 8.74, 0.20 - 298.0 mg/l, 0.07 - 46.43 Âµg/I and 0.04 - 156.25 Âµg/I respectively. Current circulation at the study area was influenced by local wind and tidal current. Total suspended solid, seawater temperature, ammonia and nitrite were higher during ebb current. The pH, nitrate-nitrogen and phosphate-phosphorus were higher during flood current. Whereas, dissolved oxygen and salinity did not show significant difference during ebb current and flood current.
format	Thesis
qualification_level	Master's degree
author	Tamrin Toha
author_facet	Tamrin Toha
author_sort	Tamrin Toha
title	The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah
title_short	The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah
title_full	The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah
title_fullStr	The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah
title_full_unstemmed	The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah
title_sort	influence of seasonal changes on physico-chemical characteristics of seawater in sepangar and gaya bays, sabah
granting_institution	Universiti Malaysia Sabah
granting_department	Borneo Marine Research Institute
publishDate	2008
url	https://eprints.ums.edu.my/id/eprint/3763/1/mt0000000038.pdf
_version_	1747836320733986816

The influence of seasonal changes on physico-chemical characteristics of seawater in Sepangar and Gaya Bays, Sabah

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