Natural thorium isotopes in marine sediment core off Labuan port

B. Y. Hafidz, A. S. Asnor, R. C. Terence, Che Abd. Rahim Mohamed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Sediment core was collected from Labuan port and analyzed to determine the radioactivity of thorium (Th) isotopes. The objectives of this study are to determine the possible sources of Th isotopes at Labuan port and estimates the sedimentation rate based on 228Th/232Th model. The results suggest the 230Th and 232Th might be originated from terrestrial sedimentary rock while 228Th originated by authigenic origin. High ratio value of 230Th/232Th detected at the top surface sediment indicates the increasing of 230Th at the recent years which might be contributed from the anthropogenic sources. The sedimentation rate of core sediment from Labuan Port was successfully estimated by using 228Th/232Th model. The result show high sedimentation rate with 4.67 cm/year indicates rapid deposition occurred at this study area due to the high physical activity at the Labuan port. By assume the constant sedimentation rate at this area; we estimated the age of 142 cm core sediment obtained from Labuan port is 32 years started from 1981 to 2012. This chronology will be used in forthcoming research to investigate the historical profile of anthropogenic activities affecting the Labuan port.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages184-189
Number of pages6
Volume1584
ISBN (Print)9780735412163
DOIs
Publication statusPublished - 2014
EventInternational Nuclear Science, Technology and Engineering Conference 2013: Advancing Nuclear Research and Energy Development, iNuSTEC 2013 - Kuala Lumpur
Duration: 30 Sep 20132 Oct 2013

Other

OtherInternational Nuclear Science, Technology and Engineering Conference 2013: Advancing Nuclear Research and Energy Development, iNuSTEC 2013
CityKuala Lumpur
Period30/9/132/10/13

Fingerprint

thorium isotopes
sediments
chronology
sedimentary rocks
radioactivity
estimates
profiles

Keywords

  • Labuan port
  • lithogenic
  • sediment core
  • sedimentation rate
  • Thorium (Th)

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hafidz, B. Y., Asnor, A. S., Terence, R. C., & Mohamed, C. A. R. (2014). Natural thorium isotopes in marine sediment core off Labuan port. In AIP Conference Proceedings (Vol. 1584, pp. 184-189). American Institute of Physics Inc.. https://doi.org/10.1063/1.4866129

Natural thorium isotopes in marine sediment core off Labuan port. / Hafidz, B. Y.; Asnor, A. S.; Terence, R. C.; Mohamed, Che Abd. Rahim.

AIP Conference Proceedings. Vol. 1584 American Institute of Physics Inc., 2014. p. 184-189.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hafidz, BY, Asnor, AS, Terence, RC & Mohamed, CAR 2014, Natural thorium isotopes in marine sediment core off Labuan port. in AIP Conference Proceedings. vol. 1584, American Institute of Physics Inc., pp. 184-189, International Nuclear Science, Technology and Engineering Conference 2013: Advancing Nuclear Research and Energy Development, iNuSTEC 2013, Kuala Lumpur, 30/9/13. https://doi.org/10.1063/1.4866129
Hafidz BY, Asnor AS, Terence RC, Mohamed CAR. Natural thorium isotopes in marine sediment core off Labuan port. In AIP Conference Proceedings. Vol. 1584. American Institute of Physics Inc. 2014. p. 184-189 https://doi.org/10.1063/1.4866129
Hafidz, B. Y. ; Asnor, A. S. ; Terence, R. C. ; Mohamed, Che Abd. Rahim. / Natural thorium isotopes in marine sediment core off Labuan port. AIP Conference Proceedings. Vol. 1584 American Institute of Physics Inc., 2014. pp. 184-189
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