摘要：On 22 December 2018, a tsunami was generated from the Mount Anak Krakatauarea that was caused by volcanic flank failures. The tsunami had severeimpacts on the western coast of Banten and the southern coasts of Lampung inIndonesia. A series of surveys to measure the impacts of the tsunami wasstarted 3 d after the tsunami and lasted for 10 d. Immediateinvestigations allowed the collection of relatively authentic images of thetsunami impacts before the clearing process started. This articleinvestigates the impacts of the 2018 Sunda Strait tsunami on the affectedareas and presents an analysis of the impacts of pure hydrodynamic tsunamiforces on buildings. Impacts of the tsunami were expected to exhibitdifferent characteristics than those found following the 2004 Indian Oceantsunami in Aceh. Data were collected from 117 flow depths along the Bantenand Lampung coasts. Furthermore, 98 buildings or houses were assessed fordamage. Results of this study revealed that the flow depths were higher inBanten than in Lampung. Directions of the tsunami arrays created by thecomplex bathymetry around the strait caused these differences.Tsunami-induced damage to buildings was mostly the result of impact forcesand drag forces. Damping forces could not be associated with the damage.The tsunami warning system in Indonesia should be extended to anticipatenon-seismic tsunamis, such as landslides and volcanic processes driven bytsunamis. The lack of a tsunami warning during the first few minutes after thegeneration of the first wave led to a significant number of human casualtiesin both of the affected areas.
