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Posts tagged Volga River

Green Sediments and Algal Growth in Northern Caspian Sea

45.2N 50.1E

August 6th, 2012 Category: Sediments

Indonesia – August 5th, 2012

The Volga River, the largest in Europe, drains 20% of the European land area and is the source of 80% of the Caspian Sea’s freshwater inflow. Here, the river’s delta can be seen in the upper left quadrant.  Water entering the sea through the delta contributes to the sediments and algal growth in the northern part of the sea. The river’s lower reaches are heavily developed with numerous unregulated releases of chemical and biological pollutants.

Although existing data are sparse and of questionable quality, there is ample evidence to suggest that the Volga is one of the principal sources of transboundary contaminants into the Caspian. The magnitude of fossil fuel extraction and transport activity constitute risks to water quality. Underwater oil and gas pipelines have been constructed or proposed, increasing potential environmental threats

 

Sediments and Phytoplankton in Caspian and Black Seas

44.4N 48.4E

July 26th, 2012 Category: Rivers

Caspian Sea- July 25th, 2012

The bright colors in the northern part of the Caspian Sea are due partly to sediments from rivers such as the Volga, easily recognizable by its large, green delta, and the Ural, to the east of the former. They are also due in part to phytoplankton growth, which is likely encourages by the influx of nutrients from the two rivers. Upon opening the full image, the Black Sea  can be observed to the west. The phytoplankton bloom that has been flourishing there over the last month (click here for previous images) has now almost completely waned.

Sediments and Phytoplankton in Northern Caspian Sea

46.1N 49.8E

July 18th, 2012 Category: Phytoplankton, Rivers, Sediments

Caspian Sea- July 18th, 2012

Sediments and phytoplankton growth in the Caspian Sea give its waters bright green and blue tones. Sediments are most concentrated by the northeastern shores and the northwestern shores, by the Volga Delta. While the Volga can be seen entering the sea from the left edge, the Ural River can be seen flowing down from the top edge.

Smoke from Fires East of Volga River, Russia

58.4N 56.3E

July 16th, 2012 Category: Fires, Rivers

Russia – July 13th, 2012

Fires in Russia, north of the border with Kazakhstan, create a large swath of smoky haze. One large fire can be seen near the image center, its plume of smoke billowing northeast and then curving to the east and the southeast. Smoke is also blown to the west, towards the Volga River, which is visible as a thick blue band near the left edge.

Volga and Ural Rivers Draining Into Caspian Sea

47.0N 49.3E

June 18th, 2012 Category: Lakes, Rivers, Sediments

Caspian Sea - May 19th, 2012

The Volga River zig-zags across the Russian landscape and flows through several large reservoirs on its way south to the Caspian Sea. It is the largest river in Europe in terms of length, discharge, and watershed. Upon reaching the Caspian Depression, it drains into the Caspian Sea through the Volga Delta, the largest river delta in Europe. Visible to the east of the Volga is another river, the Ural, which flows through Russia and Kazakhstan and is the third longest river in Europe. It also drains into the Caspian Sea. Here, the northern part of the sea is an opaque tan and blue due to the influx of sediments and phytoplankton growth.

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