Název projektu: Zkoumání povodní v Danielu pomocí satelitních snímků

7. experimentální střední škola Trikala   Trikala   Řecko

Jak se vyvíjely záplavy "Daniel" a proč? Jaká opatření může naše komunita přijmout, aby se podobným problémům v budoucnu vyhnula?

In this case study we downloaded satellite images from the EO Browser with the appropriate visualization to see the evolution of the Daniel effect. Through the satellite images, we found the severity of the phenomenon throughout Thessaly. The amounts of water that fell with the rainfall within four days were equivalent to the amount that falls in a year for many regions of our country. The amount of water in the first few days made the neighboring Plastira lake seem insignificant. From the discussion with self-administrative agents, the incomplete anti-flood planning and the failure of local dams became apparent. The water not being able to find a sufficient outlet to the sea, created a lake in the area between Volos and Larissa, where the lake Karla used to be. We conclude that the policy of maximizing agricultural land must be changed so that widening projects of the banks of the Pinios River along its entire length are carried out. We also adopt the solution of creating small waiting reservoirs at various points to reduce the flow of water in similar conditions so that it can be drained gradually. Also, the drying up of Lake Karla created problems for the region’s ecosystem and we propose its gradual restoration.

Jak se vyvíjely záplavy "Daniel" a proč? Jaká opatření může naše komunita přijmout, aby se podobným problémům v budoucnu vyhnula?

It is clear that the disasters that occurred were largely unavoidable. The expert autopsies showed the lack of large-scale flood protection works and the poor management of local dams. The above made the effects of weather phenomena worse, exacerbating the consequences. According to Professor Mr. Nikitopoulos (University of Thessaly) https://bit.ly/4apq9Aa , there were studies, but the risk was underestimated, with the result that very few projects were carried out. In an article by Mr. Koundourakis http://bit.ly/3JaZMSU , according to the Risk Management Theory (Domingo, 2020), the steps that must be followed to successfully manage such situations are presented. Prognosis, prevention, correct and timely information, and preparedness, are important factors influencing and managing the risk.
The expert suggestions https://bit.ly/3VPTJuy that currently exist are summarized in the following suggestions:
Change in the policy of maximizing agricultural land. Large tracts of land near the Pinios River must be converted to be used in such emergencies.
The widening of the river beds, the disposal of flood plains, the removal of embankments, the demolition of riverside structures, the redesign of: railways, roads, bridges, anti-flood works, the creation of alternative diversion channels for the Pinios, and creating small waiting reservoirs at various points to reduce the flow of water.
The above design leads to the creation of alternative flow paths of the water volumes and the time delay of the water flows so that there is no congestion of the system and there is enough time for its drainage. Also important is the redesign of the early warning system.
Phenomena like Daniel’s have happened in the past and will surely happen again in the future. Their frequency may even increase, as a result of climate change. Therefore, we should highlight the issue in our local community, so that we can be part of the solution and the change of mentality, in our region.

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