Thesis Format
Monograph
Degree
Master of Engineering Science
Program
Mechanical and Materials Engineering
Collaborative Specialization
Environment and Sustainability
Supervisor
Ogden, Kelly Anne.
Abstract
This thesis explores the flood risk in the Chignecto Isthmus, a vulnerable area between New Brunswick and Nova Scotia, facing increasing threats including flooding due to climate change. The history of the flood in the area is provided and considered in simulations. Using the TELEMAC-2D model, various scenarios are examined, including the impact of tidal waves, storm surges, and different dyke configurations. The study demonstrates that while normal tides alone do not cause significant flooding, high tidal waves could cause inundation. The combination of the tides with storm surges poses a serious threat as well. By analyzing the effectiveness of raising existing dykes and adding new ones, the research provides insights into how these measures can significantly reduce flood risk and protect key infrastructure. The findings offer practical strategies for mitigating the flood in the region.
Summary for Lay Audience
This project focuses on predicting water heights and examining the impact of storm surges in a coastal region, with an emphasis on analyzing prediction errors and evaluating flood prevention measures. The study includes detailed simulations to explore how various factors influence water height predictions and assesses the effectiveness of protective structures like dykes. A critical aspect of the study is the analysis of prediction errors. By altering the boundary condition types and the size of the study area, it was discovered that certain configurations resulted in lower errors. After analysis errors, bench mark simulation is chosen with errors ranging from 0.9 to 1.2 meters, which is considered acceptable given the complexity involved. The project also investigates storm surges, which are sudden increases in water levels caused by storms. The study area includes essential transportation infrastructure, such as highways and railway tracks, which are at risk during these events. To mitigate this risk, the region is equipped with dykes designed to prevent flooding. The simulations demonstrated that these dykes effectively protect the area during storm surges, especially when their elevation is increased. The government-proposed elevation of 10.6 meters for the dykes provided better protection compared to lower elevations. In summary, the study highlights the importance of accurate simulations in understanding and managing flood risks in Chignecto Isthmus. The findings demonstrate that appropriate boundary conditions, study area sizes, and infrastructure planning, such as dyke elevations, are crucial for protecting vulnerable areas from floods. These insights are valuable for future research and practical applications in coastal flood management.
Recommended Citation
Etesami, SeyedehMaliheh, "Analysis of flood risk in the Chignecto Isthmus" (2024). Electronic Thesis and Dissertation Repository. 10551.
https://ir.lib.uwo.ca/etd/10551