Characteristics of thermal radiation of ice covers on water bodies with different mineralization

Bordonskii, G. S.; Gurulev, A. A.

doi:10.1134/s0097807808020085

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…This radiation will have the increased value of the radio brightness temperature, which characterizes the intensity of the water body's thermal radiation. Such a method of investigating the contamination spots has been described in [3,4].…”

Section: Introductionmentioning

confidence: 99%

The specific features of the thermal radiation of lake Kenon during freeze-up in the infrared band

Gurulev

Казанцев

2022

IOP Conf. Ser.: Earth Environ. Sci.

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This work is the study of the infrared images of Lake Kenon located in the city of Chita. The images were obtained from a satellite Lansat-8. The images revealed the thermal anomalies of the said internal water body. The anomalies consisted in the fact that areas of open water having negative temperature are formed in the lake in the winter period. The phenomenon may be caused both by surface supercooling of the lake water and by formation of water aerosol at the temperature below 0°C. The emergence of areas with supercooled water may be, paradoxical as it may sound, due to the impact of the thermal power plant located near the lake. Its functioning prevents formation of the ice cover, especially at the locations of warm water discharge. Analysis of the satellite images in the IR-band obtained over the recent five years has shown the area of the higher water temperature on the lake surface not to exceed 10% of the total area of the lake. The time before the freeze-up in the absence of wind, October – November, is the best time for revealing the maximum temperature difference.

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Section: Introductionmentioning

confidence: 99%

The specific features of the thermal radiation of lake Kenon during freeze-up in the infrared band

Gurulev

Казанцев

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…In the microwave range, it is possible to identify places of pollution of reservoirs in the winter period by the thermal radiation of the ice cover, which, in this case, will have an increased value of the radio brightness temperature (the thermal radiation power in the ultra-high frequency range). This method of detecting pollution was described in various papers (Bordonskii & Gurulev, 2008;Gurulev, Tsyrenzhapov & Orlov, 2014).…”

Section: Introductionmentioning

confidence: 99%

Detection of thermal pollution of urban reservoirs using the method of IR-radiometry based on the example of the Lake Kenon, Zabaykalsky Krai

Gurulev

Kazantsev

2022

Nexo Revista Científica

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Water bodies (e.g., rivers, lakes, and reservoirs) are an integral part of the urban environment. The infrastructure of the city affects their condition, in particular, pollution, including heat, which can lead to an increase in phyto- and zooplankton, including blue-green algae, and the appearance of toxins in the water. Identification of places where warm water is discharged into reservoirs is an urgent task. One of the methods of solving this problem is the monitoring of reservoirs from space. Thus, with the help of infrared satellite images, thermal anomalies are visible. In the work, we studied Lake Kenon located in the city of Chita. The satellite images were obtained from the Lansat-8. The channels used were 10 and 11, with a resolution of 60 meters. We revealed that (1) the optimal time for detecting thermal anomalies is the time before freezing in calm weather; (2) the cause of the thermal anomaly of this reservoir is a thermal power plant; (3) analysis of the last 5 years has shown that the water area with an increased surface temperature of the reservoir does not change; (4) the temperature gradient between cold and warm areas is 5°C; (5) the area of the heat spot does not exceed 10% of the total area of the lake. The above conclusions were confirmed using field measurements.

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Features of radiothermal study of ice in the microwave range

Kozlov,

Gurulev

2023

Арктика И Антарктика

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The subject of the study is ice formations, which are formed as a result of the release of groundwater to the surface of ice sheets or soil. These formations cause significant damage in human economic activity. The work investigated natural ice located on fresh ice cover, as well as artificial ice formations on the ground. The glaciers located in the Transbaikal region near the city of Chita were investigated. The power of thermal radiation of these objects in the microwave range was determined at wavelengths of 2.3 cm and 0.88 cm. The power of thermal radiation in the microwave range was determined using radiometric receivers at wavelengths of 0.88 cm and 2.3 cm mounted on a car or on a fixed support. Cores of ice removed from the ice were studied to determine the layer-by-layer distribution of ice mineralization. A model of a plane-layered non-isothermal medium was used to calculate the thermal radiation of ice. The possibility of registering ice formations by radiothermal radiation of these objects in the microwave range is shown. If there is a layer of water on the ice, the radio brightness temperature will be significantly lower than the object on the surface of which there is no water mass. By the value of the radio brightness temperature in the microwave range for several ranges, as a result of which it is possible to indirectly estimate the thickness of ice formations. At the same time, it is necessary to take into account the variations in the radiofrequency temperature of the medium depending on its thickness due to the interference of radiothermal radiation of a plane-layered medium.

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Characteristics of thermal radiation of ice covers on water bodies with different mineralization

Cited by 3 publications

References 2 publications

The specific features of the thermal radiation of lake Kenon during freeze-up in the infrared band

The specific features of the thermal radiation of lake Kenon during freeze-up in the infrared band

Detection of thermal pollution of urban reservoirs using the method of IR-radiometry based on the example of the Lake Kenon, Zabaykalsky Krai

Features of radiothermal study of ice in the microwave range

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