Japan Geoscience Union Meeting 2016

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International Session (Poster)

Symbol H (Human Geosciences) » H-CG Complex & General

[H-CG11] DELTAS: multidisciplinary analyses of complex systems

Thu. May 26, 2016 3:30 PM - 4:45 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Yoshiki Saito(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Irina Overeem, Paola Passalacqua(University of Texas at Austin), Fabrice Renaud(United Nations University), KanHsi Hsiung(Japan Agency for Marine-Earth Science and Technology)

3:30 PM - 4:45 PM

[HCG11-P11] Holocene tidal changes around the Mekong River Delta, Vietnam

*Katsuto Uehara1, Yoshiki Saito2 (1.Kyushu University, 2.Geological Survey of Japan, AIST)

Keywords:delta, South China Sea, paleotidal modeling, Holocene transgression

Numerical simulation was conducted to reconstruct tidal changes taken place within and around the Mekong River Delta during the Holocene. The paleobathymetry used in this study was based on GIA model and was modified by removing thick Holocene deposits existent in major deltas facing the South China Sea, e.g., Mekong, Red, Chao Phraya, and Pearl river deltas. A preliminary result shows that semi-diurnal tidal currents were developed at the inner portion of the paleo Mekong estuary during the mid-Holocene transgressive stage, suggesting stronger influence of tides on the delta formation than at present.