Willingness to pay for upgrading tsunami co-beneficial structures: Example from a railway embankment and a revetment in Sri Lanka

R. S.M. Samarasekara, J. Sasaki, Miguel Esteban, H. Matsuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Increasing the tsunami disaster resilience of the Southwestern coastline of Sri Lanka is a pressing problem, due to the continuous presence of unprotected human settlements in tsunami-prone areas. Even though a variety of different tsunami countermeasures can be attempted, due to budgetary limitations early warning systems are typically used. Some types of coastal structures (such as coastal railway embankments, revetments etc.) have the potential to mitigate the impact of tsunami, which is often overlooked in research. The engineering resilience of these structures needs to be improved if they are to withstand a tsunami, though upgraded structures can offer a multitude of co-benefits to residents. This research assesses residents willingness to pay (WTP) for hard defensive measures, as well as the socioeconomic factors that influence residents WTP. WTP of residents to upgrade a coastal railway embankment and a revetment in Dimbuldooa and Wenamulla villages was measured by conducting a structured questionnaire survey of 200 residents. The results of the survey were triangulated through five expert interviews with representatives of government agencies, construction companies and academia, and two focus group discussions with residents. The findings suggest that it is necessary for disaster risk managers to pay special attention to socioeconomic factors to successfully enhance the resilience of community.

Original languageEnglish
Title of host publicationASIAN AND PACIFIC COASTS 2017
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages139-150
Number of pages12
Edition213039
ISBN (Print)9789813233805
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes
Event9th International Conference on Asian and Pacific Coasts, APAC 2017 - Pasay, Philippines
Duration: 2017 Oct 192017 Oct 21

Other

Other9th International Conference on Asian and Pacific Coasts, APAC 2017
CountryPhilippines
CityPasay
Period17/10/1917/10/21

Keywords

  • Co-beneficial Structures
  • Sri Lanka
  • Tsunami
  • WTP

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Oceanography

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    Samarasekara, R. S. M., Sasaki, J., Esteban, M., & Matsuda, H. (2018). Willingness to pay for upgrading tsunami co-beneficial structures: Example from a railway embankment and a revetment in Sri Lanka. In ASIAN AND PACIFIC COASTS 2017 (213039 ed., pp. 139-150). World Scientific Publishing Co. Pte Ltd. https://doi.org/10.1142/9789813233812_0014