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...
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Universiti Kebangsaan Malaysia
2002
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| Online Access: | http://journalarticle.ukm.my/3821/ http://www.ukm.my/jsm/english_journals/vol31_2002/vol31_02page49-56.html |
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| author | Kamaruzzaman , B. Y. Leong , H. F. Moho Lokman , H. Sulong , I. Chong , K. Y. |
| author_facet | Kamaruzzaman , B. Y. Leong , H. F. Moho Lokman , H. Sulong , I. Chong , K. Y. |
| author_sort | Kamaruzzaman , B. Y. |
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| content_provider | Universiti Kebangsaan Malaysia |
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| continent | Asia |
| country | Malaysia |
| 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 |
| id | my-ukm.journal-3821 |
| institution | Universiti Kebangsaan Malaysia |
| publishDate | 2002 |
| publisher | Universiti Kebangsaan Malaysia |
| record_format | eprints |
| spelling | my-ukm.journal-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 |
| 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 |
| title | 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_short | 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 |
| url | http://journalarticle.ukm.my/3821/ http://www.ukm.my/jsm/english_journals/vol31_2002/vol31_02page49-56.html |
| url_provider | http://journalarticle.ukm.my/ |