VARIABILITY OF BIO-OPTICAL CHARACTERISTICS IN ECOSYSTEMS OF PETER THE GREAT BAY (SEA OF JAPAN)

2017 ◽  
Author(s):  
Elena Shtraikhert ◽  
Elena Shtraikhert ◽  
Sergey Zakharkov ◽  
Sergey Zakharkov
Keyword(s):  
Wind Speed ◽  
Peter The Great Bay ◽  
Atmospheric Precipitation ◽  
Optical Characteristics ◽  
Biological Origin ◽  
Peter The Great ◽  
Yellow Substance ◽  
Great Bay ◽  
First Case ◽  
Fluorescence Of Chlorophyll A

Variability of the bio-optical characteristics may be as indicator of changes in the functioning of ecosystems, for example the eutrophication, the organic matter pollution and the hypoxia of water body. In this work we study according to data, obtained by means of the satellite MODIS-Aqua spectroradiometer, the variability of bio-optical characteristics (concentration and fluorescence of chlorophyll-a (Cchl and Fchl), coefficients of light absorption by detritus and yellow substance (adg) and light backscattering by suspended particles of mineral and biological origin (bbp)) along sections extending from the shelf (Amur and Ussuri Bays) toward the seaward area of Peter the Great Bay from January to December of 2007, 2008, 2013, 2014. Features of the seasonal Cchl satellite variability along the selected sections were shown. It is noticed that the highest Cchl satellite values are characteristic for the Amur Bay, usually from place of confluence of the Razdolnaya River from late May - June to August – September. Separate cases of increased values of bbp in area, which stretches from the Vladivostok coast, were revealed. In the first case, the area of the increased values of bbp corresponded to area, having the Fchl values close to zero, and in second case – to area with the increased Fchl. Possible, the first case can be caused by the increase in content of the mineral origin suspension because of some building works, and the second case is due to the discharge of water by reservoirs. It is noticed that the increased values of bio-optical characteristics except Fchl are characteristic for the scenarios with the increased wind speed and after the atmospheric precipitation. Increased Fchl values are characteristic at the sufficient rainfall, contributing to rising of the rivers level, or the increase of wind speed to about 8 m/s and above.

VARIABILITY OF BIO-OPTICAL CHARACTERISTICS IN ECOSYSTEMS OF PETER THE GREAT BAY (SEA OF JAPAN)

2017 ◽  
Author(s):  
Elena Shtraikhert ◽  
Elena Shtraikhert ◽  
Sergey Zakharkov ◽  
Sergey Zakharkov
Keyword(s):  
Wind Speed ◽  
Peter The Great Bay ◽  
Atmospheric Precipitation ◽  
Optical Characteristics ◽  
Biological Origin ◽  
Peter The Great ◽  
Yellow Substance ◽  
Great Bay ◽  
First Case ◽  
Fluorescence Of Chlorophyll A

Variability of the bio-optical characteristics may be as indicator of changes in the functioning of ecosystems, for example the eutrophication, the organic matter pollution and the hypoxia of water body. In this work we study according to data, obtained by means of the satellite MODIS-Aqua spectroradiometer, the variability of bio-optical characteristics (concentration and fluorescence of chlorophyll-a (Cchl and Fchl), coefficients of light absorption by detritus and yellow substance (adg) and light backscattering by suspended particles of mineral and biological origin (bbp)) along sections extending from the shelf (Amur and Ussuri Bays) toward the seaward area of Peter the Great Bay from January to December of 2007, 2008, 2013, 2014. Features of the seasonal Cchl satellite variability along the selected sections were shown. It is noticed that the highest Cchl satellite values are characteristic for the Amur Bay, usually from place of confluence of the Razdolnaya River from late May - June to August – September. Separate cases of increased values of bbp in area, which stretches from the Vladivostok coast, were revealed. In the first case, the area of the increased values of bbp corresponded to area, having the Fchl values close to zero, and in second case – to area with the increased Fchl. Possible, the first case can be caused by the increase in content of the mineral origin suspension because of some building works, and the second case is due to the discharge of water by reservoirs. It is noticed that the increased values of bio-optical characteristics except Fchl are characteristic for the scenarios with the increased wind speed and after the atmospheric precipitation. Increased Fchl values are characteristic at the sufficient rainfall, contributing to rising of the rivers level, or the increase of wind speed to about 8 m/s and above.

The large-scale vegetation maps of the western coast of Peter the Great Bay (Far East, the Sea of Japan)

2000 ◽  
pp. 50-61 ◽  
Author(s):  
S. V. Osipov ◽  
V. P. Verkholat
Keyword(s):  
Vegetation Cover ◽  
Large Scale ◽  
Far East ◽  
Peter The Great Bay ◽  
The Sea Of Japan ◽  
Western Coast ◽  
Spatial Unit ◽  
Peter The Great ◽  
Great Bay ◽  
River Valleys

Two territories on the western coast of Peter the Great Bay were mapped in the large scale. The geobotanical mapping means revealing and displaying the essential regularities of vegetation cover. Both the spatial and temporal regularities of vegetation under natural and anthropogenic influences are well pronounced in the territory under consideration. The concept of the vegetation spatial unit (vegetation complexes) was applied as a basis for mapping. The maps and their legend were worked out as a system of vegetation combination types (vegetation combination is a spatial unit of the supracoenotic level). Such categories, as vegetation of tops and slopes, lowlands and river valleys, sea coasts reflect maximal contrasts in vegetation cover, so they are the highest level divisions of the map legend. Types of succession series and stages of series are developed for construction of the second and third levels of the legend. Communities, similar in ecotope, total species composition, saplings and some other characteristics, are referred to one type of series. 5 types of series have been distinguished: dry, fresh, moist, very moist, wet. The main factor of dynamics in considered territory is fire and the series are mainly pyrogeneous. Series are presented as sequences of vegetation stages. The vegetation stages for tops and slopes are: closed low forest — open low woodland — shrub thicket with saplings — meadow with saplings, for lowlands and river valleys they are: open low woodland — thicket of saplings — meadow or mire with saplings.

Ice drift in Peter the Great Bay

2014 ◽  
Vol 178 (3) ◽  
pp. 148-156
Author(s):  
Vyacheslav A. Dubina ◽  
Vladimir V. Plotnikov ◽  
Nina S. Kot
Keyword(s):  
Satellite Images ◽  
High Spatial Resolution ◽  
Peter The Great Bay ◽  
Western Coast ◽  
Mean Values ◽  
Peter The Great ◽  
Great Bay ◽  
Ice Drift ◽  
The Right ◽  
First Time

Dynamics of the sea ice cover in Peter the Great Bay is considered, for the first time for its whole area, on the base of satellite images received in 2004-2011 from the spectroradiometers MODIS mounted on the satellites Terra and Aqua. High spatial resolution maps of the ice drift are constructed for various wind conditions. Mean values of the drift velocity and wind coefficient are calculated for four parts of the Bay. In usual conditions of winter monsoon, the ice in the central part of Peter the Great Bay drifts southward with the velocity 0.5-0.6 m/s with deviation from the wind direction about 40° to the right; the ice at the western coast drifts along the island chain with the velocity 0.1-0.4 m/s under wind of any direction in the quadrant from northwest to northeast.

Phytoplankton of the Peter the Great Bay and its remote sensing problem

Oceanology ◽  
2012 ◽  
Vol 52 (2) ◽  
pp. 219-230 ◽  
Author(s):  
A. I. Aleksanin ◽  
V. Kim ◽  
T. Yu. Orlova ◽  
I. V. Stonik ◽  
O. G. Shevchenko
Keyword(s):  
Remote Sensing ◽  
Peter The Great Bay ◽  
Peter The Great ◽  
Great Bay

Aerosol dynamics above the water area of the Peter the Great Bay during the dust storm in the Gobi desert

2006 ◽  
Author(s):  
O. A. Bukin ◽  
A. N. Pavlov ◽  
J. N. Kulchin ◽  
K. A. Shmirko ◽  
P. A. Salyuk ◽  
...  
Keyword(s):  
Dust Storm ◽  
Peter The Great Bay ◽  
Water Area ◽  
Gobi Desert ◽  
Aerosol Dynamics ◽  
Peter The Great ◽  
Great Bay
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