Tsunami deposits in near-shore- and coastal waters of Thailand (TUNWAT)
Final Report Abstract
It was doubted for a long time that in wave dominated coastal areas the impact of tsunami waves on shoreface deposits can be preserved. Following high resolution mapping with different hydroacoustic methods, positions for grab sampling and coring were identified, where tsunami deposits were supposed to occur. The sampled material was analyzed using a wide range of sedimentological, geochemical, micropalaeontological, chemical, and physical methods. Storm and tsunami event layers could be identified and distinguished from storm and flash-flood deposits. Individual layers, ranging from 12 - 39 cm in thickness, were interpreted as tsunami deposits. Run-up and backwash deposits could be distinguished as well. Based on foraminiferal transfer functions and textural analyses re-suspension of sediment during run-up seemed to be restricted to about 20 m water depth. On the other hand it could be shown by using PAHs as a chemical proxy that the loaded backwash extends up to 25 km offshore.
Publications
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2009. Impact of the 2004 Indian Ocean Tsunami on Seafloor Morphology and Sediments Offshore Pakarang Cape, Thailand. Polish J. of Environ. Stud., 18 (1), 63 – 68
Feldens, P., Schwarzer, K., Szczuciński, W., Stattegger, K., Sakuna, D. Somgpongchaiykul, P.
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2010. Shallow water sediment structures in a tsunami-affected area (Pakarang Cape, Thailand). – Coastline Reports, 16, 15 – 24
Feldens, P., Sakuna, D., Somgpongchaiykul, P., Schwarzer, K.
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2012. Parameters Influencing Sulfur Speciation in Environmental Samples Using Sulfur K-Edge X-Ray Absorption Near-Edge Structure (XANES). - Journal of Analytical Methods in Chemistry
Pongpiachan, S., Thumanu, K., Kositanont, C., Schwarzer, K., Prietzel, J., Hirunyatrakul, P., Kittikoon, I.
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2012. Sediment distribution on the inner continental shelf off Khao Lak (Thailand) after the 2004 Indian Ocean Tsunami. – Earth Planets Space, 64, 875 – 887
Feldens, P, Schwarzer K., Sakuna, D., Szczucinski, W., Sompongchaiyakul, P.
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2012. Sedimentary deposits left by the 2004 Indian Ocean tsunami offshore Khao Lak, Andaman Sea (Thailand).- Earth Planets Space, 64, 931 – 953
Sakuna, D., Szczuciński, W., Feldens, P., Schwarzer, K., Khokiattiwong, S.
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2012. Using Polycyclic Aromatic Hydrocarbons (PAHs) as a Chemical Proxy to Indicate Tsunami 2004 Backwash in Khao Lak Coastal Area, Thailand, Natural Hazards and Earth System Sciences, 12, 1 – 11
Tipmanee,D., Deelaman, W., Pongpiachan, S., Schwarzer, K., Sompongchaiyakul, P.
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2013. Risk assessment of the presence of polycyclic aromatic hydrocarbons (PAHs) in coastal areas of Thailand affected by the 2004 tsunami. Marine Pollution Bulletin
Pongpiachan.S., Tipmanee, D., Deelaman, W., Muprasit, J., Feldens, P., Schwarzer, K.
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2013. Sedimentary features of tsunami backwash deposits as assessed by micro-beam synchrotron x-ray fluorescence (µ-SXRF) at the Siam photon laboratory. – Journal of Tsunami Society International, 32 (2), 96 – 115
Pongpiachan, S., Thumanu, K., Tanthanuch, W., Tipmanee, D., Kanchai, P., Schwarzer, K., Tancharakorn, S.
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2013. Using Fourier-Transformation infrared (FTIR) to characterize tsunami deposits in near-shore and coastal waters of Thailand. - Journal of Tsunami Society International, 32 (1), 39 – 57
Pongpiachan, S., Thumanu, K., Phattthalung, W.N., Tipmanee, D., Kanchai, P., Feldens, P., Schwarzer, K.
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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 Earth Syst. Sci. 13 (12). pp. 3113-3128, 2013
Milker, Y., Wilken, M., Schumann, J., Sakuna, D., Feldens, P., Schwarzer, K., Schmiedl, G.
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2015. Identification of tsunami deposits in the Andaman Sea offshore Phang Ngha Province (Thailand). 4th Int. Tsunami Field Symp., March 23 – 27, Phuket (Thailand), 12 – 14
Schwarzer, K., Feldens, P., Sakuna-Schwartz, D., Pongpiachan, S., Milker, Y, Tipmanee, D.
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2015. Internal structure of event layers preserved on the Andaman Sea continental shelf, Thailand: tsunami vs. Storm and falsh-flood deposits. Nat. Hazards Earth Syst. Sci., 15, 1181 – 1199
Sakuna-Schwartz, D., Feldens, P., Schwarzer, K., Khokiattiwong, S., Stattegger, K.
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2015. The Indian Ocean Tsunami 2004: Identification of Tsunami deposits in the Andaman Sea by different proxis. Proc. Coastal Sediments 2015
Schwarzer, K., Feldens, P., Sakuna-Schwartz, D., Pongpiachan, S., Milker, Y., Tipmanee, D.
