The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia

Accumulation of element Th with depth was determined in a 150 em core sediment obtained from the mangrove forest of Tanjung Piai, Johore, Malaysia. In this study, a 230Thexcess method was used where the element relies on a constant production rate of 230Th from the radioactive decay of dissolved 23...

Full description

Bibliographic Details
Main Authors:	Kamaruzzaman , B. Y., Leong , H. F., Moho Lokman , H., Sulong , I., Chong , K. Y.
Format:	Article
Published:	Universiti Kebangsaan Malaysia 2002
Online Access:	http://journalarticle.ukm.my/3821/ http://journalarticle.ukm.my/3821/

id	ukm-3821
recordtype	eprints
spelling	ukm-38212012-05-04T04:13:48Z http://journalarticle.ukm.my/3821/ The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia Kamaruzzaman , B. Y. Leong , H. F. Moho Lokman , H. Sulong , I. Chong , K. Y. Accumulation of element Th with depth was determined in a 150 em core sediment obtained from the mangrove forest of Tanjung Piai, Johore, Malaysia. In this study, a 230Thexcess method was used where the element relies on a constant production rate of 230Th from the radioactive decay of dissolved 234U in the water column. Applying the 230Thexcess and 230Thexcess/232Th method, average sedimentation rates of 0.84 cmyr-1 and 0.88 cmyrl were obtained, respectively. If this sedimentation rate is applicable to the core, the mangrove forest in the study sites was probably in immature stage with an estimated age of about 120 years. This finding suggests that the mangrove forests are not just passive colonizers of mud banks, but actively capture mud to create their own environments. Mangroves are thus an important sink for the fine sediment from rivers and coastal waters. Universiti Kebangsaan Malaysia 2002 Article PeerReviewed Kamaruzzaman , B. Y. and Leong , H. F. and Moho Lokman , H. and Sulong , I. and Chong , K. Y. (2002) The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia. Sains Malaysiana, 31 . pp. 49-56. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol31_2002/vol31_02page49-56.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
description	Accumulation of element Th with depth was determined in a 150 em core sediment obtained from the mangrove forest of Tanjung Piai, Johore, Malaysia. In this study, a 230Thexcess method was used where the element relies on a constant production rate of 230Th from the radioactive decay of dissolved 234U in the water column. Applying the 230Thexcess and 230Thexcess/232Th method, average sedimentation rates of 0.84 cmyr-1 and 0.88 cmyrl were obtained, respectively. If this sedimentation rate is applicable to the core, the mangrove forest in the study sites was probably in immature stage with an estimated age of about 120 years. This finding suggests that the mangrove forests are not just passive colonizers of mud banks, but actively capture mud to create their own environments. Mangroves are thus an important sink for the fine sediment from rivers and coastal waters.
format	Article
author	Kamaruzzaman , B. Y. Leong , H. F. Moho Lokman , H. Sulong , I. Chong , K. Y.
spellingShingle	Kamaruzzaman , B. Y. Leong , H. F. Moho Lokman , H. Sulong , I. Chong , K. Y. The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia
author_facet	Kamaruzzaman , B. Y. Leong , H. F. Moho Lokman , H. Sulong , I. Chong , K. Y.
author_sort	Kamaruzzaman , B. Y.
title	The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia
title_short	The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia
title_full	The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia
title_fullStr	The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia
title_full_unstemmed	The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia
title_sort	determination of 230th in the sediments: sediment accretion in the mangrove forests of tanjung piai, johore , malaysia
publisher	Universiti Kebangsaan Malaysia
publishDate	2002
url	http://journalarticle.ukm.my/3821/ http://journalarticle.ukm.my/3821/
first_indexed	2023-09-18T19:39:52Z
last_indexed	2023-09-18T19:39:52Z
_version_	1777405517660946432

The determination of 230Th in the sediments: sediment accretion in the Mangrove Forests of Tanjung Piai, Johore , Malaysia

Similar Items