Abstract
Abstract. On 22 December 2018, a tsunami was generated from the Mount Anak Krakatau area that was caused by volcanic flank failures. The tsunami had severe impacts on the western coast of Banten and the southern coasts of Lampung in Indonesia. A series of surveys to measure the impacts of the tsunami was started 3 d after the tsunami and lasted for 10 d. Immediate investigations allowed the collection of relatively authentic images of the tsunami impacts before the clearing process started. This article investigates the impacts of the 2018 Sunda Strait tsunami on the affected areas and presents an analysis of the impacts of pure hydrodynamic tsunami forces on buildings. Impacts of the tsunami were expected to exhibit different characteristics than those found following the 2004 Indian Ocean tsunami in Aceh. Data were collected from 117 flow depths along the Banten and Lampung coasts. Furthermore, 98 buildings or houses were assessed for damage. Results of this study revealed that the flow depths were higher in Banten than in Lampung. Directions of the tsunami arrays created by the complex bathymetry around the strait caused these differences. Tsunami-induced damage to buildings was mostly the result of impact forces and drag forces. Damping forces could not be associated with the damage. The tsunami warning system in Indonesia should be extended to anticipate non-seismic tsunamis, such as landslides and volcanic processes driven by tsunamis. The lack of a tsunami warning during the first few minutes after the generation of the first wave led to a significant number of human casualties in both of the affected areas.
Highlights
In 2018, there were two important tsunami disasters that drew the attention of disaster researchers, namely the 28 September 2018 Palu tsunami and the 22 December 2018 Sunda Strait tsunami
The latter was generated by the Mount Anak Krakatau volcanic eruption
This study investigates the impacts of volcanogenic tsunamis, generated by Mount Anak Krakatau, on Lampung and Banten, located around Sunda Strait, Indonesia
Summary
In 2018, there were two important tsunami disasters that drew the attention of disaster researchers, namely the 28 September 2018 Palu tsunami and the 22 December 2018 Sunda Strait tsunami. The latter was generated by the Mount Anak Krakatau volcanic eruption. Local communities received no warning of the 22 December 2018 tsunami that was generated by Mount Anak Krakatau This was one reason for the large number of human casualties on both sides of the affected area. What made this tsunami of particular interest was the rare process that led to its generation and the fact that it occurred at night, hindering any direct visual anticipation and interaction by local communities
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
