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A visibility-based assessment of tsunami evacuation signs in Seaside,Oregon |
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| Authors: | Chris Lonergan Nick Hedley John J Clague |
| Institution: | 1. Centro de Geociencias, Campus Juriquilla, UNAM, Querétaro, Mexico 2. Licenciatura en Ciencia Ambiental y Gestión de Riesgos, Facultad de Ciencias, Universidad de Colima, Colima, Mexico 3. Instituto de Geología, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico 4. Dipartimento di Scienze della Terra e Geoambientali, via Orabona 4, 70125, Bari, Italy |
| Abstract: | Tsunami risk mitigation programs often include iconic evacuation signage to direct locals and visitors to safety during a tsunami event. This paper examines sign placement in Seaside, Oregon, from a visibility perspective. It leverages existing visibility analysis methodologies characterize the visibility of the community’s evacuation signage and reveals patterns in the viewable landscape. Additionally, we develop a topologically 3D approach to visibility analysis using raw LiDAR datasets. This applied work situates a discussion on existing patterns of visibility, how to improve existing signage placement, 2D and 3D representation of landscape, and the importance of visibility analysis. This work aims to stimulate discussion and development of hazard research that incorporates a visibility perspective. |
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