This study is motivated by the tsunami event caused by Mount Anak Krakatau flank collapse on 22^nd December 2018 which affected vital areas in Southern Sumatera and Western Java. A tsunami simulation will be carried out by using a 2D Non-Linear Shallow Water Equation Model to estimate the volume of the initial source as well as their tsunami mode at shores. Various scenarios of initial water volume replicating the tsunami source were applied, where the tsunami heights and their periods reach shores are validated with mareogram data at four Stations. The fact that the remaining materials of Mount Anak Krakatau after the 2018 event are still potential to generate a hazardous tsunami in the future and threaten the coastal infrastructures along the coastal Sunda Strait area. In this study, the validated parameters resulting from the 2018 event above are applied to model of the plausible worst scenario where the entire of the flank of Mount Anak Krakatau potentially collapses in the future. The study is important to estimate the tsunami hazard potential in the future that obviously influencing major activities and life’s in vital industrial-urban area in Southern Sumatera and Western Java.

^{这项研究的动机是 22 日Anak} Krakatau 山侧塌陷造成的海啸事件2018 年 12 月，影响了南苏门答腊和西爪哇的重要地区。海啸模拟将通过使用二维非线性浅水方程模型来估计初始源的体积以及它们在海岸的海啸模式。应用了复制海啸源的初始水量的各种情景，其中海啸高度及其到达海岸的周期通过四个站的 mareogram 数据进行了验证。事实上，2018 年事件后 Anak Krakatau 山的剩余材料仍有可能在未来产生危险的海啸，并威胁沿岸巽他海峡地区的沿海基础设施。在这项研究中，将上述 2018 年事件产生的经过验证的参数应用于可能的最坏情况模型，即未来喀拉喀托山阿纳克山的整个侧翼可能会倒塌。该研究对于估计未来海啸潜在危险具有重要意义，这明显影响南苏门答腊和西爪哇重要工业城市地区的主要活动和生活。