Automatic processing of Sentinel-2 image for Kerch peninsula lake areas extraction using QGIS and Python

Climatic changes that have occurred over the past decades, with an acceleration of urbanization of territories and technological development, leads to the significant changes not only in the atmosphere, but also in the Earth’s surface. Surface water bodies are one of these components. Today there are 3 main methods of monitoring water bodies -field, remote and combined. In this paper, we show the possibility of automating remote monitoring of water bodies using QGIS, Python and Sentinel-2 data of the main and largest lakes of the Kerch Peninsula. Having analysed both the available satellite data and the features of the study area, we came to the conclusion that it is advisable to use the NDWI index instead of the mNDWI. After processing and analysing the Sentinel-2 data for 2018 using the data processing model presented in the work, we obtained time series of changes in the areas of the studied lakes of the Kerch Peninsula.

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A Generic Framework for Change Detection on Surface Water Bodies Using Landsat Time Series Data

Computational Vision and Bio-Inspired Computing - Advances in Intelligent Systems and Computing ◽

10.1007/978-981-33-6862-0_26 ◽

2021 ◽

pp. 303-314

Author(s):

T. V. Bijeesh ◽

K. N. Narasimhamurthy

Keyword(s):

Time Series ◽

Surface Water ◽

Change Detection ◽

Time Series Data ◽

Water Bodies ◽

Series Data ◽

Generic Framework ◽

Surface Water Bodies

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Scientific rationale of measures on prevention of pollution of surface water bodies in Kharkiv region

Експериментальна і клінічна медицина ◽

10.35339/ekm.2019.01.15 ◽

2020 ◽

Vol 82 (1) ◽

pp. 99-105

Author(s):

M.I. Lytvynenko ◽

O.I. Zaliubovska ◽

M.G. Shcherban ◽

T.I. Tiupka ◽

V.V. Zlenko ◽

...

Keyword(s):

Surface Water ◽

Water Bodies ◽

Treated Wastewater ◽

Laboratory Studies ◽

The Past ◽

Chemical Indicators ◽

Water Factor ◽

Surface Water Bodies ◽

Anthropogenic Loading ◽

Microbiological Indicators

Today, in Kharkiv region, most of the surface water bodies as a result of man-made and anthropogenic loading have lost their natural purity and the ability to self-purify. One of the features of water resources of the region is that the rivers, which serve as the main sources of water supply, are also used as receivers of treated wastewater. In order to analyze the state of pollution of the aquifer of Kharkiv region during 2007–2016, laboratory studies of water of surface water reservoirs of the 1st and 2nd categories were conducted and summarized. The researchers have found that over the past 10 years the pollution of surface water bodies of the 1st category according to sanitary-chemical indicators is at the level of 4.5%, microbiological indicators – 14%, water pollution of reservoirs of the 2nd category is 20% and 12%, respectively. In order to prevent the occurrence of diseases of different etiology among the population of Kharkiv region, the source of which is the water factor, a set of methodical and practical measures that will contribute to the improvement of the surface water of the region has been developed

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Assessing the impact of climate change on water quality and quantity in the Elbe catchment using an open-data driven approach

10.5194/egusphere-egu2020-6670 ◽

2020 ◽

Author(s):

Alexander Wachholz ◽

Seifeddine Jomaa ◽

Olaf Büttner ◽

Robert Reinecke ◽

Michael Rode ◽

...

Keyword(s):

Climate Change ◽

Water Quality ◽

Surface Water ◽

Weather Conditions ◽

Extreme Weather ◽

Water Bodies ◽

Chemical Status ◽

The Past ◽

Surface Water Bodies ◽

The Impact

<p>Due to global climate change, the past decade has been the warmest for Germany since the beginning of climate records. Not only air temperature but also precipitation patterns are changing and therefore influencing the hydrologic cycle. This will certainly influence the chemical status of ground- and surface water bodies as mobilization, dilution and chemical reactions of contaminants are altered. However, it is uncertain if those alterations will impact water quality for better or worse and how they occur spatially. Since water management in Europe is handled at the regional scale, we suggest that an investigation is needed at the same scale to capture and quantify the different responses of the chemical status of water bodies to climate change and extreme weather conditions. In this study, we use open-access data to (1) quantify changes in temperature, precipitation, streamflow and groundwater levels for the past 40 - 60 years and (2) assess their impacts on nutrient concentrations in surface- and groundwater bodies. To disentangle management from climate effects we pay special attention to extreme weather conditions in the past decade. Referring to the Water Framework Directive, we chose the river basin district Elbe as our area of interest. Preliminary results indicate that especially the nitrate concentrations in surface water bodies of the Elbe catchment were positively affected in the last two years, while no significant impact on nitrate levels in shallow groundwater bodies was witnessed. However, many wells showed the first significant increase in water table depth in both years since 1985, raising the question of how fast groundwater-surface water interactions will change in the next years.</p>

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