Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions
We have investigated the benthic foraminiferal fauna from sediment event layers associated with the 2004 Indian Ocean tsunami and former storms that have been retrieved in short sediment cores from offshore environments of the Andaman Sea, off Khao Lak, western Thailand. Species composition and test...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2013-12-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/13/3113/2013/nhess-13-3113-2013.pdf |
| _version_ | 1811268223194103808 |
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| author | Y. Milker M. Wilken J. Schumann D. Sakuna P. Feldens K. Schwarzer G. Schmiedl |
| author_facet | Y. Milker M. Wilken J. Schumann D. Sakuna P. Feldens K. Schwarzer G. Schmiedl |
| author_sort | Y. Milker |
| collection | DOAJ |
| description | We have investigated the benthic foraminiferal fauna from sediment event
layers associated with the 2004 Indian Ocean tsunami and former storms that
have been retrieved in short sediment cores from offshore environments of
the Andaman Sea, off Khao Lak, western Thailand. Species composition and
test preservation of the benthic foraminiferal faunas exhibit pronounced
changes across the studied sections and provide information on the
depositional history of the tsunami layer, particularly on the source water
depth of the displaced foraminiferal tests. In order to obtain accurate
bathymetric information on sediment provenance, we have mapped the
distribution of modern faunas in non-tsunamigenic surface sediments and
created a calibration data set for the development of a transfer function.
Our quantitative reconstructions revealed that the resuspension of sediment
particles by the tsunami wave was restricted to a maximum water depth of
approximately 20 m. Similar values were obtained for former storm events,
thus impeding an easy distinction of different high-energy events. |
| first_indexed | 2024-04-12T21:17:57Z |
| format | Article |
| id | doaj.art-40fe05f1029c438584cabbf3db959a35 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-04-12T21:17:57Z |
| publishDate | 2013-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-40fe05f1029c438584cabbf3db959a352022-12-22T03:16:22ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812013-12-0113123113312810.5194/nhess-13-3113-2013Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functionsY. Milker0M. Wilken1J. Schumann2D. Sakuna3P. Feldens4K. Schwarzer5G. Schmiedl6Center of Earth System Research and Sustainability, University of Hamburg, Hamburg, GermanyCenter of Earth System Research and Sustainability, University of Hamburg, Hamburg, GermanyCenter of Earth System Research and Sustainability, University of Hamburg, Hamburg, GermanyInstitute of Geosciences, Coastal and Shelf Research, University of Kiel, Kiel, GermanyInstitute of Geosciences, Coastal and Shelf Research, University of Kiel, Kiel, GermanyInstitute of Geosciences, Coastal and Shelf Research, University of Kiel, Kiel, GermanyCenter of Earth System Research and Sustainability, University of Hamburg, Hamburg, GermanyWe have investigated the benthic foraminiferal fauna from sediment event layers associated with the 2004 Indian Ocean tsunami and former storms that have been retrieved in short sediment cores from offshore environments of the Andaman Sea, off Khao Lak, western Thailand. Species composition and test preservation of the benthic foraminiferal faunas exhibit pronounced changes across the studied sections and provide information on the depositional history of the tsunami layer, particularly on the source water depth of the displaced foraminiferal tests. In order to obtain accurate bathymetric information on sediment provenance, we have mapped the distribution of modern faunas in non-tsunamigenic surface sediments and created a calibration data set for the development of a transfer function. Our quantitative reconstructions revealed that the resuspension of sediment particles by the tsunami wave was restricted to a maximum water depth of approximately 20 m. Similar values were obtained for former storm events, thus impeding an easy distinction of different high-energy events.http://www.nat-hazards-earth-syst-sci.net/13/3113/2013/nhess-13-3113-2013.pdf |
| spellingShingle | Y. Milker M. Wilken J. Schumann D. Sakuna P. Feldens K. Schwarzer G. Schmiedl Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions Natural Hazards and Earth System Sciences |
| title | Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions |
| title_full | Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions |
| title_fullStr | Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions |
| title_full_unstemmed | Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions |
| title_short | Sediment transport on the inner shelf off Khao Lak (Andaman Sea, Thailand) during the 2004 Indian Ocean tsunami and former storm events: evidence from foraminiferal transfer functions |
| title_sort | sediment transport on the inner shelf off khao lak andaman sea thailand during the 2004 indian ocean tsunami and former storm events evidence from foraminiferal transfer functions |
| url | http://www.nat-hazards-earth-syst-sci.net/13/3113/2013/nhess-13-3113-2013.pdf |
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