Monitoring of the hydrological regime of the Saratov reservoir using the MNDWI index
| Autor: | D. N. Sherstobitov, A. A. Bochkina, V. V. Ermakov, O. V. Tupitsyna, K. L. Chertes, D. E Bykov |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 818:012048 |
| ISSN: | 1755-1315 1755-1307 |
| Popis: | The article analyzes the possibilities of using Earth remote sensing (ERS) indices for monitoring the state of the environment. The possibility of using remote sensing indices for monitoring and forecasting the state of water bodies and watercourses, their hydrological characteristics was assessed. Within Samara region, the possibility of using the Modified Normalized Difference Water Index (MNDWI) to assess the water saturation of the Saratov reservoir in the Vasilievsky Islands area was considered. This territory was chosen due to the fact that it is sufficiently indicative for assessing changes in the hydrological regime of the reservoir. The processing of multispectral images taken by the Sentinel-2 satellite was carried out on the basis of green and short-wavelength spectral channels. The area of the water surface was calculated based on the number of binary pixels of the processed images. In accordance with the calculations, it was revealed that the area of the Saratov reservoir in the Vasilievsky Islands area has increased. At the same time, it was noted that the area of the water surface of small water bodies that have no connection with the reservoir has increased. The results obtained showed a high efficiency of monitoring changes in the hydrological regime of the reservoir when using the MNDWI. |
| Databáze: | OpenAIRE |
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