Simulation of water level for flood scenarios: application to Luján (Buenos Aires, Argentina).
Floods in plain areas are a recurring problem in a large number of cities. Such is the case of Luján, a city of intermediate size, whose origin and expansion occurs on the banks of the homonymous river, in the heart of the Pampas region, in Buenos Aires’s province. Through a water level simulation p...
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Artículo revista |
| Lenguaje: | Español |
| Publicado: |
Departamento de Geografía. Facultad de Humanidades. Universidad Nacional del Comahue
2023
|
| Materias: | |
| Acceso en línea: | https://revele.uncoma.edu.ar/index.php/geografia/article/view/4585 |
| Aporte de: |
| Sumario: | Floods in plain areas are a recurring problem in a large number of cities. Such is the case of Luján, a city of intermediate size, whose origin and expansion occurs on the banks of the homonymous river, in the heart of the Pampas region, in Buenos Aires’s province.
Through a water level simulation procedure, it is possible to represent the expansion of the flood patch, specifically considering the spatial focal level, which is the one addressed in this work. This makes it possible to generate different hazard scenarios by representing the surface susceptible to flooding when the river increases its water level in different amounts.
In this line, the main objective is to carry out a spatial characterization of the floods in Luján from the generation of two scenarios, considering historical data of flood events in the city and using as main input an Aerophotogrammetric Digital Elevation Model, put to provision by the National Geographic Institute of the Argentine.
The paper presents a description of the study area, conceptual aspects for addressing the issue of urban flooding and its main triggering factors, a brief history of flooding in Luján, methodological aspects for simulating the water level through of a specific module in a Geographic Information System, the analysis and discussion of results and, finally, the conclusions are presented.
The results, reflected in the thematic cartography of flood scenarios, allowed us to recognize the urban areas where the hazard is present, affecting an approximate area of 6 km2 that includes from central neighborhoods, due to the historical location of the city, to peripheral neighborhoods, from recent addition to the urban commons, many of them settled in the flood valley of the river. The generation of this type of cartography is essential to be able to detect areas and elements that are exposed to this hazard and thus be able to guide spatial decision-making in pursuit of improving the quality of life of the population. |
|---|