Numerical modeling of the morphological change in Lhok Nga, west Banda Aceh, during the 2004 Indian Ocean tsunami: understanding tsunami deposits using a forward modeling method
Numerical modeling of the morphological change in Lhok Nga, west Banda Aceh, during the 2004 Indian Ocean tsunami: understanding tsunami deposits using a forward modeling method
复制标题
2004 年印度洋海啸期间班达亚齐西部 Lhok Nga 形态变化的数值模拟：使用正演模拟方法了解海啸沉积物
作者：
Linlin Li;Q. Qiu;Zhenhua Huang
采用流体静力学-形态动力学耦合模型COMCOT-SED对2004年印度洋海啸期间Lhok Nga湾的形态变化进行了研究，该耦合模型对海啸沉积物厚度的预测与实测相吻合。详细讨论了海啸沉积物特征与流动流体力学的关系。沉积物厚度向陆地变薄、颗粒尺寸向陆地变细、颗粒尺寸向上变细等现象通常用于识别海啸沉积物，并在本案例研究中进行了检验。我们还讨论了沉积物供给的影响以及海啸沉积物信息对地震参数的约束。研究表明，本文模型能够模拟大范围内的极端海啸事件（海啸波高~30 m），海啸沉积物运移正演模型是帮助海啸地质学家了解海啸沉积物的一个很有前途的工具。
A coupled hydrostatic and morph-dynamic model COMCOT-SED was used to investigate the morphological change in Lhok Nga bay during the 2004 Indian Ocean tsunami, and the coupled model predicted the thickness of tsunami deposits in agreement with the measured ones. The relationship between the characteristics of tsunami deposit and flow hydrodynamics was discussed in details. Phenomena such as landward thinning in deposit thickness, landward fining in grain size, and fining upwards in grain size are commonly used to identify tsunami deposits and were examined in this case study. We also discussed the effects of sediment supplies and the constraints that can be put on the earthquake parameters using the information derived from tsunami deposits. This study shows that the model presented in this paper is capable of simulating extreme tsunami events (tsunami wave height ~30 m) in a large domain and that forward models of tsunami sediment transport can be a promising tool to help tsunami geologists understand tsunami deposits.
TsuSedMod 反演模型应用于 2004 年苏门答腊岛和 2006 年爪哇海啸的沉积物以及对估计古海啸流动参数的影响
影响因子：
2.8
作者：
Spiske;Bahlburg;Roskosch;Amijaya
通讯作者：
Amijaya