A geospatial analysis of multi-hazard risk in Dharan, Nepal

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dc.contributor.authorAksha, Sanam K.en
dc.contributor.authorResler, Lynn M.en
dc.contributor.authorJuran, Lukeen
dc.contributor.authorCarstensen, Laurence W.en
dc.contributor.departmentGeographyen
dc.date.accessioned2020-06-01T19:38:56Zen
dc.date.available2020-06-01T19:38:56Zen
dc.date.issued2020-01-01en
dc.description.abstractNatural hazard risk assessment generally focuses on a single hazard type, such as earthquakes, landslides, or floods. This emphasis tends to consider physical processes in isolation. However, most locations are simultaneously at risk to multiple, interacting hazards that generate cascading effects or synergies. Although scholars have proposed a multi-hazard risk framework based on probabilities, the quality and quantity of data required for such an approach are often unavailable in developing countries. Using geospatial and socioeconomic data, this study represents a first step in assessing multi-hazard risk in the city of Dharan, Nepal. Three hazards-landslides, floods, and earthquakes-were considered for an integrated hazard assessment using statistical methods and the Analytic Hierarchy Process (AHP). We employed a Social Vulnerability Index (SoVI) to create a vulnerability map of the study area, which was then combined with a multi-hazard hazard map to produce a total risk map. Our results indicate that eastern Dharan along the Seuti River and southwestern Dharan on the left bank of the Sardu River are at high risk to multiple hazards. Central Dharan and the hills in the western portion of the city are categorized as low risk areas. Data limitations, such as availability and spatial resolution, did not allow for dynamic modeling; however, our results identified the spatial extent of low to high risk areas, which can inform future disaster planning. For example, the methodology and results of this study could assist in the development of disaster risk reduction programs and policies.en
dc.description.notesThanks to the DigitalGlobe Foundation for providing imagery through a grant awarded to SKA. A scholarship to SKA from the Sidman P. Poole Endowment, VT Department of Geography provided financial support for fieldwork in Nepal. We would like to thank Dharan sub-metropolitan city for providing social data, Alankar Kafle for the field guidance, and two anonymous reviewers and the journal editor for their comments and feedback. We are also grateful to the Virginia Tech Open Access Subvention Fund for funding article processing charges.en
dc.description.sponsorshipDigitalGlobe Foundation; Sidman P. Poole Endowment, VT Department of Geography; Virginia Tech Open Access Subvention Funden
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1080/19475705.2019.1710580en
dc.identifier.eissn1947-5713en
dc.identifier.issn1947-5705en
dc.identifier.issue1en
dc.identifier.urihttp://hdl.handle.net/10919/98653en
dc.identifier.volume11en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectGeospatial methodsen
dc.subjectmulti-hazarden
dc.subjectrisk assessmenten
dc.subjectNepalen
dc.subjecthazards modelingen
dc.subjectdisasteren
dc.titleA geospatial analysis of multi-hazard risk in Dharan, Nepalen
dc.title.serialGeomatics Natural Hazards & Risken
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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