Collaborative Research: Tsunami and Tropical Cyclone Sediment Dynamics and Products

海啸和热带气旋对沿海社区构成严重威胁。量化这种危险是具有挑战性的，部分原因是仪器和历史数据集太短，无法捕捉任何特定地点可能出现的极端洪水条件。保存在沿海沉积物中的海啸和热带气旋沉积物，为扩展这些记录提供了一种手段。然而，海啸和热带气旋期间沉积物的运动存在很大的不确定性，这阻碍了对这些事件沉积物的解释。为了深入了解海啸和热带气旋期间的沉积物运输，将根据现代和古沉积沉积物的特性进行计算建模。一种假设是海啸和热带气旋之间的流动和输送过程存在相似之处；因此，将这两种现象结合起来研究可以学到很多东西。另一种假设是，海啸和热带气旋沉积物中存在自然模式，因此可以用先进的统计方法与计算建模相结合，获得沉积物性质与其成因事件之间的相关性。这项研究将促进对海啸和热带气旋期间沉积物运输的了解，并将提高更确定地预测未来海啸和热带气旋影响的能力，从而使沿海规划更具弹性，从而有可能挽救生命和保护生计。

Tsunamis and tropical cyclones pose a serious hazard to coastal communities. Quantifying this hazard is challenging in part because instrumental and historical datasets are too short to capture the extreme range of flood conditions possible at any particular location. Deposits from tsunamis and tropical cyclones, preserved within coastal sediments, provide a means to extend these records. However, there is significant uncertainty related to the movement of sediment during tsunamis and tropical cyclones, which hinders the interpretation of these event deposits. To gain insight in sediment transport during tsunamis and tropical cyclones, computational modeling, informed by the properties of modern and paleo sedimentary deposits, will be performed. One assumption is that similarities exist in flow and transport processes between tsunamis and tropical cyclones; therefore, much can be learned from studying the two phenomena in tandem. Another assumption is that natural patterns exist in tsunami and tropical cyclone deposits such that correlations between deposit properties and their causative event can be obtained with advanced statistical methods coupled to computational modeling. The study will advance understanding of sediment transport during tsunamis and tropical cyclones and will improve the capability to predict the impact of future tsunami and tropical cyclones with more certainty, resulting in more resilient coastal planning, potentially saving lives and protecting livelihoods.