日本地球惑星科学連合2016年大会

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インターナショナルセッション（ポスター発表）

セッション記号 H (地球人間圏科学) » H-CG 地球人間圏科学複合領域・一般

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

2016年5月26日(木) 15:30 〜 16:45 ポスター会場 (国際展示場 6ホール)

コンビーナ:*斎藤 文紀(国立研究開発法人産業技術総合研究所地質情報研究部門)、Overeem Irina、Passalacqua Paola(University of Texas at Austin)、Renaud Fabrice(United Nations University)、熊 衎昕(国立研究開発法人海洋研究開発機構)

15:30 〜 16:45

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

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

キーワード：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.