Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary

This paper focuses on Langat River basin which is experiencing fast pace land use changes and accelerated soil erosion associated with land clearing and earthwork activities. Land use changes detected from Landsat imageries from 1989-1999 show that urban expansion is the most active, i.e. recording...

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Main Authors:	Othman , A, Karim Othman Jaafar, Sharifah Mastura Syed Abdullah
Format:	Article
Published:	Universiti Kebangsaan Malaysia 2004
Online Access:	http://journalarticle.ukm.my/3867/ http://journalarticle.ukm.my/3867/

id	ukm-3867
recordtype	eprints
spelling	ukm-38672012-05-07T03:32:03Z http://journalarticle.ukm.my/3867/ Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary Othman , A Karim Othman Jaafar, Sharifah Mastura Syed Abdullah, This paper focuses on Langat River basin which is experiencing fast pace land use changes and accelerated soil erosion associated with land clearing and earthwork activities. Land use changes detected from Landsat imageries from 1989-1999 show that urban expansion is the most active, i.e. recording an expansion of 180% over that time period. The major land use reduction is the tropical dipterocarp rainforest located along the upper catchment of the Langat River and the mangrove forest found along Kuala Langat in the west. The 11% decline in the trend of the forest over that decade is anticipated to contribute in the near future. Results from logistic regression on the casual factors of rapid land use changes are attributed to three significant variables namely transport accessibility, population dynamics and agriculture. The eroded material due to land use changes enters into the Langat River systems as suspended sediments and contributed as non point source of pollution. Some finer sediment is being discharged offshore forming sediment plumes at the river estuary. Sediment plumes detected by Landsat TM imageries were analysed. It is found that the dispersion was not extensive and generally the suspended solids existed at low concentration (varying from 10-50 mg/l). This result is unexpected considering the rapid land use and land cover change that is occurring within the basins. These are mainly due to the loss of sediments during flooding into flood plain and active dredging of the river channels. Universiti Kebangsaan Malaysia 2004 Article PeerReviewed Othman , A and Karim Othman Jaafar, and Sharifah Mastura Syed Abdullah, (2004) Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary. Sains Malaysiana, 33 (1). pp. 1-13. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol33num1_2004/vol33num1_04page1-13.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
description	This paper focuses on Langat River basin which is experiencing fast pace land use changes and accelerated soil erosion associated with land clearing and earthwork activities. Land use changes detected from Landsat imageries from 1989-1999 show that urban expansion is the most active, i.e. recording an expansion of 180% over that time period. The major land use reduction is the tropical dipterocarp rainforest located along the upper catchment of the Langat River and the mangrove forest found along Kuala Langat in the west. The 11% decline in the trend of the forest over that decade is anticipated to contribute in the near future. Results from logistic regression on the casual factors of rapid land use changes are attributed to three significant variables namely transport accessibility, population dynamics and agriculture. The eroded material due to land use changes enters into the Langat River systems as suspended sediments and contributed as non point source of pollution. Some finer sediment is being discharged offshore forming sediment plumes at the river estuary. Sediment plumes detected by Landsat TM imageries were analysed. It is found that the dispersion was not extensive and generally the suspended solids existed at low concentration (varying from 10-50 mg/l). This result is unexpected considering the rapid land use and land cover change that is occurring within the basins. These are mainly due to the loss of sediments during flooding into flood plain and active dredging of the river channels.
format	Article
author	Othman , A Karim Othman Jaafar, Sharifah Mastura Syed Abdullah,
spellingShingle	Othman , A Karim Othman Jaafar, Sharifah Mastura Syed Abdullah, Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary
author_facet	Othman , A Karim Othman Jaafar, Sharifah Mastura Syed Abdullah,
author_sort	Othman , A
title	Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary
title_short	Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary
title_full	Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary
title_fullStr	Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary
title_full_unstemmed	Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary
title_sort	application of remote sensing on the dispersion and concentration of total suspended sediment offshore langat estuary
publisher	Universiti Kebangsaan Malaysia
publishDate	2004
url	http://journalarticle.ukm.my/3867/ http://journalarticle.ukm.my/3867/
first_indexed	2023-09-18T19:40:00Z
last_indexed	2023-09-18T19:40:00Z
_version_	1777405526531899392

Application of remote sensing on the dispersion and concentration of total suspended sediment offshore Langat Estuary

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