Dr. Olga Y. Lavrova Profile

Dr. Olga Y. Lavrova

at Space Research Institute of the RAS

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Author

Publications (27)

Proceedings Article | 12 September 2021 Presentation + Paper

Remote sensing of suspended particulate matter: case studies of the Sulak (Caspian Sea) and the Mzymta (Black Sea) mouth areas

Olga Yu. Lavrova, Ksenia Nazirova, Dmitry Soloviev, Yana Alferieva, Alexey Ya. Strochkov, Tatiana Yu. Bocharova

Proceedings Volume 11857, 1185705 (2021) https://doi.org/10.1117/12.2599809

KEYWORDS: Scanning probe microscopy, Satellites, Mouth, In situ metrology, Multispectral imaging, Earth observing sensors, Landsat, Sensors, Clouds, Algorithm development

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Proceedings Article | 12 September 2021 Poster + Paper

Usage of SAR and VIS data for monitoring of the surface oil pollution in the off-shore oil-producing area of the Caspian Sea

Marina Mityagina, Olga Yu. Lavrova

Proceedings Volume 11857, 118570N (2021) https://doi.org/10.1117/12.2599689

KEYWORDS: Satellites, Synthetic aperture radar, Satellite imaging, Earth observing sensors, Pollution, Radar, Sensors, Reflection, Contamination, Reliability

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Proceedings Article | 20 September 2020 Poster + Paper

Oil pollution hotspots on the Caspian Sea surface identified using satellite remote sensing

Marina Mityagina, Olga Yu. Lavrova

Proceedings Volume 11529, 115290L (2020) https://doi.org/10.1117/12.2573501

KEYWORDS: Satellites, Earth observing sensors, Satellite imaging, Pollution, Synthetic aperture radar, Sensors, Remote sensing, Landsat, Composites

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Proceedings Article | 14 October 2019 Presentation + Paper

Remote sensing of sea ice in the Caspian Sea

Olga Lavrova, Andrey Kostianoy, Marina Mityagina, Alexey Ya. Strochkov, Tatiana Bocharova

Proceedings Volume 11150, 111500Q (2019) https://doi.org/10.1117/12.2532136

KEYWORDS: Remote sensing, Satellites, Radar, Earth observing sensors, Landsat, Analytical research, Ocean optics, Multispectral imaging, Synthetic aperture radar, Humidity

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Proceedings Article | 14 October 2019 Paper

Characterization of surface currents from subsequent satellite images of organic slicks on the sea surface

Olga Danilicheva, Stanislav Ermakov, Ivan Kapustin, Olga Lavrova

Proceedings Volume 11150, 111501R (2019) https://doi.org/10.1117/12.2533448

KEYWORDS: Synthetic aperture radar, Satellites, Ocean optics, Satellite imaging, Natural surfaces, Earth observing sensors, Spatial resolution, Microwave radiation, Radar, Remote sensing

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The problem of characterization of marine currents using ocean remote sensing data is very challenging and has not been completely resolved by now. Optical and IR satellite images of the ocean have been traditionally used to estimate the current velocities when comparing color or temperature inhomogeneities in co-located subsequent scenes. SAR as all-weather and all-day instrument with high spatial resolution is very perspective for ocean remote sensing, and the procedure similar to the optical/IR observations seems to be usable for SAR for the current velocity estimation, too. Marine biogenic film slicks often observed on the sea surface as systems of “filamentary” structures at low/moderate wind conditions can be considered as appropriate features for marine current tracking. However, very few attempts have been made to study the current velocity field when studying slick features in SAR images acquired from different satellites at a comparably short time interval. In this paper two sequential satellite SAR images acquired with Envisat ASAR and ERS-2 SAR have been analyzed in order to estimate the surface marine currents. The acquisition time difference between the images was nearly 30 min. The images were characterized by a number of slick features which were nearly identical within the 30 min time shift, so that it was rather easy to track any chosen slick structure and to retrieve the velocity field. A Maximum Cross-Correlation (MCC) method has been used for the current retrieval, when analyzing correlation between the sequential images. It has been obtained that for some slick filamentary structures or for their parts the retrieved current velocities were directed nearly along the filaments, so that the slicks can be considered as the current streamlines. On the contrary, for some other slicks the retrieved current velocity vectors were directed at quite large angles to the filament tangent lines. We believe that the latter effect appears for varying currents due to the “memory” of slicks which cannot change their orientation or appear/disappear instantaneously according to fast changes of environmental conditions, in particular according to wind speed velocity/direction changes.

Proceedings Article | 14 October 2019 Presentation + Paper

Features of monitoring near the mouth zones by contact and contactless methods

K. Nazirova, O. Lavrova, E. Krayushkin

Proceedings Volume 11150, 111500H (2019) https://doi.org/10.1117/12.2533165

KEYWORDS: Remote sensing, Mouth, Earth observing sensors, Satellites, Satellite imaging, Landsat, Pollution, Ecosystems, Minerals, Chemical analysis

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Proceedings Article | 14 October 2019 Paper

Satellite and in-situ observations of a river confluence zone

Stanislav Ermakov, Alexander Molkov, Ivan Kapustin, Tatiana Lazareva, Olga Danilicheva, Olga Shomina, Maria Smirnova, Olga Lavrova

Proceedings Volume 11150, 111501S (2019) https://doi.org/10.1117/12.2533470

KEYWORDS: Satellites, Earth observing sensors, Radar, Satellite imaging, In situ remote sensing, Natural surfaces, Chemical analysis, Foam, Pollution, Eye

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Proceedings Article | 14 October 2019 Presentation + Paper

Distinctive features of the Vistula lagoon outflow by remote sensing and oceanographic experiments data

Evgeny Krayushkin, Olga Lavrova, Ksenia Nazirova

Proceedings Volume 11150, 111500W (2019) https://doi.org/10.1117/12.2533024

KEYWORDS: Remote sensing, Water, Image processing, Earth observing sensors, Satellites, Radar, Active optics, Ocean optics, Satellite imaging, Visible radiation

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Proceedings Article | 10 October 2018 Paper

Satellite remote sensing of submesoscale fronts in inner seas

Marina Mityagina, Olga Lavrova

Proceedings Volume 10784, 107840Y (2018) https://doi.org/10.1117/12.2323974

KEYWORDS: Synthetic aperture radar, Radar, Satellites, Backscatter, Water, Remote sensing, Ocean optics, Satellite imaging, Earth observing sensors, Modulation

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Proceedings Article | 5 October 2018 Presentation + Paper

Vortex structures in the Southeastern Baltic Sea: satellite observations and concurrent measurements

Olga Lavrova, Evgeny Krayushkin, Ksenia Nazirova, Alexey Ya. Strochkov

Proceedings Volume 10784, 1078404 (2018) https://doi.org/10.1117/12.2325463

KEYWORDS: Satellites, Earth observing sensors, Satellite imaging, Multispectral imaging, Radar, Landsat, Sensors, Composites, Visualization, Spatial resolution

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Proceedings Article | 13 October 2017 Paper

Multi-sensor satellite survey of natural oil slicks in the southeastern Black Sea

Marina Mityagina, Olga Yu. Lavrova

Proceedings Volume 10422, 1042215 (2017) https://doi.org/10.1117/12.2278025

KEYWORDS: Satellites, Satellite imaging, Pollution, Earth observing sensors, Radar, Remote sensing, Image resolution, Synthetic aperture radar, Sensors

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Proceedings Article | 13 October 2017 Presentation + Paper

Long-term monitoring of sea ice conditions in the Kerch Strait by remote sensing data

Olga Yu. Lavrova, Marina Mityagina, Tatiana Yu. Bocharova, Andrey Kostianoy

Proceedings Volume 10422, 104220L (2017) https://doi.org/10.1117/12.2277829

KEYWORDS: Satellites, Bridges, Earth observing sensors, Landsat, Meteorology, Synthetic aperture radar, Pixel resolution, Composites, Polarization, Remote sensing

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Proceedings Article | 13 October 2017 Paper

Damping of surface waves due to oil emulsions in application to ocean remote sensing

I. Sergievskaya, S. Ermakov, T. Lazareva, O. Lavrova

Proceedings Volume 10422, 104221H (2017) https://doi.org/10.1117/12.2278575

KEYWORDS: Remote sensing, Thin films, Pollution, Radar, Ocean optics, Liquids, Diffusion, Solids, Satellites, Water

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Proceedings Article | 3 October 2017 Paper

Experimental study of dual polarized radar return from the sea surface

S. Ermakov, I. Kapustin, O. Yu. Lavrova, A. Molkov, I. Sergievskaya, O. Shomina

Proceedings Volume 10422, 104220G (2017) https://doi.org/10.1117/12.2278555

KEYWORDS: Radar, Doppler effect, Polarization, Backscatter, X band, Scattering, S band, Microwave radiation, Wave propagation, Solids

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Proceedings Article | 19 October 2016 Paper

River plumes investigation using Sentinel-2A MSI and Landsat-8 OLI data

Olga Yu. Lavrova, Dmitry Soloviev, Mikhail Strochkov, Tatiana Bocharova, Alexandr Kashnitsky

Proceedings Volume 9999, 99990G (2016) https://doi.org/10.1117/12.2241312

KEYWORDS: Landsat, Multispectral imaging, Earth observing sensors, Imaging systems, Sensors, Water, Satellites, Synthetic aperture radar, Spatial resolution, Data archive systems

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Proceedings Article | 19 October 2016 Paper

Results of the Caspian Sea satellite survey: internal wave climate

Marina Mityagina, Olga Yu. Lavrova

Proceedings Volume 9999, 99991B (2016) https://doi.org/10.1117/12.2241656

KEYWORDS: Satellites, Earth observing sensors, Remote sensing, Radar, Satellite imaging, Wave propagation, Modulation, Radio propagation, Solitons, Microwave radiation

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Proceedings Article | 14 October 2015 Paper

Revealing the influence of various factors on concentration and spatial distribution of suspended matter based on remote sensing data

Olga Lavrova, Dmitry Soloviev, Marina Mityagina, Alexey Strochkov, Tatiana Bocharova

Proceedings Volume 9638, 96380D (2015) https://doi.org/10.1117/12.2193905

KEYWORDS: Earth observing sensors, Satellites, Mouth, Remote sensing, Floods, Landsat, Composites, Water, MODIS, Satellite imaging

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Proceedings Article | 14 October 2015 Paper

Multi-sensor satellite survey of surface oil pollution in the Caspian Sea

Marina Mityagina, Olga Lavrova

Proceedings Volume 9638, 96380Q (2015) https://doi.org/10.1117/12.2194511

KEYWORDS: Landsat, Radar, Pollution, Satellites, Satellite imaging, Synthetic aperture radar, Ocean optics, Earth observing sensors, Earthquakes, Sensors

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Proceedings Article | 14 October 2014 Paper

See the Sea: multi-user information system for investigating processes and phenomena in coastal zones via satellite remotely sensed data, particularly hyperspectral data

Marina Mityagina, Olga Yu. Lavrova, Ivan Uvarov

Proceedings Volume 9240, 92401C (2014) https://doi.org/10.1117/12.2067300

KEYWORDS: Satellites, Sensors, Earth observing sensors, Water, Remote sensing, Analytical research, Data archive systems, Reflectivity, Data processing, Landsat

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Proceedings Article | 14 October 2014 Paper

Radar manifestations of ship wakes in algae bloom zones

Marina Mityagina, Olga Yu. Lavrova

Proceedings Volume 9240, 924018 (2014) https://doi.org/10.1117/12.2067339

KEYWORDS: Radar, Satellites, Satellite imaging, Earth observing sensors, Synthetic aperture radar, Infrared imaging, Wave propagation, Visible radiation, Statistical analysis, Infrared radiation

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Radar manifestations of ship wakes in zones of phytoplankton bloom are discussed. It is shown that these signatures can be regarded as indicators of biogenic activity. The main data are satellite radar images. Satellite visible (VIS) and infrared (IR) satellite data are also analyzed. The large amount of the available data allowed us to make some generalizations and obtain statistically reliable results concerning spatial and temporal variability of certain type of ship wake manifestations in synthetic aperture radar (SAR) images of the sea surface. Traditional classification of surface ship wakes manifestations in satellite SAR images specifies distinct features such as a dark trailing centreline region (turbulent wake), narrow V-wakes aligned at some angle to the ship’s path (the Kelvin wake), and, sometimes, internal wave wakes generated under conditions of shallow stratification. Their characteristic lengths are reported to be up to tens of kilometers and they can last from tens of minutes up to one hour. Instances of radar signatures of the ship wakes dissimilar to the previously described were detected in radar images obtained in the course of a satellite monitoring campaign of the central and south-eastern Baltic. These ship wakes can be seen in satellite radar images as long bright strips of enhanced backscatter with characteristic length of up to several hundred kilometres lasting more than 5 hours. A hypothesis is put forward of the coherence of this type of ship wakes detected in sea surface radar imagery and areas of intensive biogenic activity under conditions of low near-surface winds. Statistics on their seasonal, spatial and year-to-year distribution are drawn. These results are compared with temporal and spatial variations in chlorophyll a concentration and intensity of phytoplankton bloom in the area of interest. Chlorophyll a concentration maps derived from satellite data are used, as well as those based on in situ measurements. The relation between occurrences of this type of ship wake manifestations and areas of algae blooms is established.

Proceedings Article | 14 October 2014 Paper

Detecting biogenic pollution in Rybinsk Reservoir from satellite data and contact measurements

Olga Yu. Lavrova, Ludmila Korneva, Victoria Shendrick, Dmitry Soloviev, Alexey Ya. Strochkov

Proceedings Volume 9240, 92400E (2014) https://doi.org/10.1117/12.2067371

KEYWORDS: Earth observing sensors, Satellites, Radar, Landsat, Satellite imaging, Sensors, Pollution, Remote sensing, Biology, Analytical research

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Proceedings Article | 14 October 2014 Paper

Internal waves in the Black Sea: satellite observations and in-situ measurements

Olga Yu. Lavrova, Marina Mityagina, Andrey Serebryany, Konstantin Sabinin, Nina Kalashnikova, Evgeny Krayushkin, Ielizaveta Khymchenko

Proceedings Volume 9240, 924016 (2014) https://doi.org/10.1117/12.2067047

KEYWORDS: Satellites, Synthetic aperture radar, Water, Earth observing sensors, Wave propagation, Acoustics, Radar, Landsat, Image resolution, Backscatter

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Proceedings Article | 19 October 2012 Paper

Investigation of fine spatial structure of currents and submesoscale eddies based on satellite radar data and concurrent acoustic measurements

Olga Lavrova, Andrey Serebryany, Tatiana Bocharova, Marina Mityagina

Proceedings Volume 8532, 85320L (2012) https://doi.org/10.1117/12.970482

KEYWORDS: Satellites, Synthetic aperture radar, Radar, Acoustics, Data acquisition, Visualization, Remote sensing, Sensors, Doppler effect, Atmospheric propagation

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Proceedings Article | 26 February 2004 Paper

Sea surface imprints of wind field patterns in the Black Sea coastal zone as viewed by satellite SAR

Tatiana Bocharova, Olga Lavrova, Marina Mityagina, Valery Pungin

Proceedings Volume 5233, (2004) https://doi.org/10.1117/12.511052

KEYWORDS: Synthetic aperture radar, Radar, Satellites, Image analysis, Convection, Ocean optics, Infrared imaging, Satellite imaging, Atmospheric sensing, Wind energy

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Proceedings Article | 26 February 2004 Paper

Possibility of current parameter retrieval from radar data

Olga Lavrova, Sergei Badulin

Proceedings Volume 5233, (2004) https://doi.org/10.1117/12.511053

KEYWORDS: Radar, Synthetic aperture radar, Wavefronts, Refraction, Wave propagation, Image analysis, Wavefront distortions, Solitons, Remote sensing, Feature extraction

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Proceedings Article | 14 April 2003 Paper

Intensity of atmospheric motions in the MABL retrieved from ocean surface radar imagery

Marina Mityagina, Tatiana Bocharova, Olga Lavrova, Valery Pungin

Proceedings Volume 4899, (2003) https://doi.org/10.1117/12.466367

KEYWORDS: Radar, Convection, Polarization, Synthetic aperture radar, Ku band, Atmospheric modeling, Wind energy, Backscatter, Satellites, Image analysis

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Proceedings Article | 14 April 2003 Paper

SAR observations of dynamic processes in the Bering Strait

Olga Lavrova, Tatiana Bocharova, Konstantin Sabinin

Proceedings Volume 4899, (2003) https://doi.org/10.1117/12.466366

KEYWORDS: Synthetic aperture radar, Radar, Water, Remote sensing, Satellites, Image analysis, Analytical research, Image processing, Feature extraction, Modulation

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Showing 5 of 27 publications

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