Tsunami debris analysis to support blue economy development in Tasikmalaya, West Java

¹ Universitas Jenderal Soedirman, Master Program of Civil Engineering Department, Purbalingga, Indonesia
² Universitas Jenderal Soedirman, Bachelor Program of Civil Engineering Department, Purbalingga, Indonesia

^* Corresponding author: sanidhyanika.purnomo@unsoed.ac.id

Abstract

In many coastal and marine environments, the blue economy is being developed to enhance community welfare. The possibility of a tsunami disaster, which could destroy the infrastructure supporting the blue economy, is one of the development challenges. The Sindangkerta beach and the Pamayang harbor in Tasikmalaya, West Java, Indonesia, are the two locations where this study discusses the possibility of tsunami debris occurring. Infrastructure that supports life may be threatened by tsunami debris. To ascertain the origin of the debris, a field survey was used in the study. When a tsunami is approaching, beachfront houses and fishing boats are easily swept towards land. The number and mass of houses and boats are counted. In order to calculate the magnitude of the tsunami impact force, the material stiffness of the two types of objects was also examined. The potential tsunami debris's runup and rundown directions are also estimated. The study's findings show that houses that serve as restaurants and shops for tourists predominate at the Sindangkerta tourist destination while fishing boats serve as the primary source of debris at the Pamayang fishing port. In addition, the debris dispersal area due to run-up and run-down is also depicted.