Study of tropical cyclone induced compound flood in Kupang City, Indonesia
Cecilia Nonifili Yuanita*

School of Architecture, Planning, and Policy Development, Insitut Teknologi Bandung,
Jalan Ganesha 10, Bandung 40132, Indonesia
*25422035[at]mahasiswa.itb.ac.id

Abstract

Cyclone Seroja is one of the atmospheric disasters in Indonesia that caused a major impact, especially in East Nusa Tenggara region. Climatologically, Indonesia is not an area where tropical cyclones form, but due to the impact of climate change, tropical cyclones are increasingly appearing in low-latitude areas and cross the land which also caused disasters, such as compound flooding (flood and flash flood) due to the 2021 Sawu Sea tropical cyclone in Kupang City. The fatalities are low, but the physical damage is high (approximately 12.692 houses affected and about 403 houses heavily damaged). The existing early warnings were ignored which is also related to the community^s risk misperception of the tropical cyclone that occurred. To reduce these risks, prevention and mitigation measures are urgently needed by carrying out risk assessments that can be integrated into existing urban planning, but tropical cyclones have not been classified into the disaster risk assessments conducted in Indonesia and the lack of knowledge about tropical cyclone risks. Therefore, this study aims to conduct a study of tropical cyclone induced compound flood (TC-compound flood induced) in Kupang City. This study carried out by comprehensively identifying the pre, during and post-disaster phases followed by disaster risk assessment of the TC-compound flood induced that occurred. From the results of the assessment, strategies can be formulated to integrate it into the existing spatial planning.

Keywords: tropical cyclone- TC-compound flood induced- disaster risk assessment- spatial planning

Topic: Atmospheric Sciences