The Utility of Morphometric Parameters Extracted from SAR Radar Images in the Monitoring of the Dynamics of the Danube Island System, Giurgiu-Călăraşi Sector, Romania - Archive ouverte HAL Access content directly
Journal Articles International Journal of Design & Nature and Ecodynamics Year : 2021

The Utility of Morphometric Parameters Extracted from SAR Radar Images in the Monitoring of the Dynamics of the Danube Island System, Giurgiu-Călăraşi Sector, Romania

Utilité des paramètres morphométriques extraits des Images Radar SAR pour monitorer la dynamique du système des îles du Danube, Secteur de Giurgiu-Călăraşi, Roumanie

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Abstract

The Danube islands system is continuously undergoing real degradations caused by natural and anthropogenic processes, thus causing a weakening of the biological potential and generating ecological and socioeconomic imbalances. The lack of frequent data on the morphometric parameters of the islands in this region constitutes a major gap for monitoring, understanding and diagnosing the state of their evolution. The aim of this work is to show the importance of morphometric parameters extracted from SAR radar amplitude images in the monitoring of the dynamics of the Danube island system, along the Giurgiu-Călăraşi sector, at the frontier of Romania-Bulgaria. This study conducted by extraction of islands allowed us to detect and monitor the evolution of each island and sub-island, between 1995 and 2009, with great precision. The results obtained showed a displacement of the island system in the SouthEast direction with an average annual velocity of about 1 m/year and sediment accumulations with an average radius velocity estimated at 1.34 m/year during this period of 14 years. The increase of sediment accumulation during the studied period is due to river bank erosion and to the major floods produced in 2005 on the tributary rivers and especially those of 2006 on the Danube River.
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Dates and versions

hal-03912612 , version 1 (24-12-2022)

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Kamel Hachemi, Florina Grecu, Gabriela Ioana-Toroimac, Ştefania Grigorie-Omrani, André Ozer, et al.. The Utility of Morphometric Parameters Extracted from SAR Radar Images in the Monitoring of the Dynamics of the Danube Island System, Giurgiu-Călăraşi Sector, Romania. International Journal of Design & Nature and Ecodynamics, 2021, 16, pp.13 - 19. ⟨10.18280/ijdne.160103⟩. ⟨hal-03912612⟩
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