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Posts tagged Danube River

Green and Blue Phytoplankton Bloom Still Flourishing in Black Sea

44.5N 30.2E

June 13th, 2012 Category: Phytoplankton, Rivers

Black Sea - June 11th, 2012

Photosynthetic organisms inhabiting the water column are called phytoplankton; they include microscopic unicellular algae and photosynthetic bacteria. There are a great number of them in the water.

When the surface water of Black Sea is the warmest, there can be between thousands to tens of millions of phytoplankton cells in 1 liter of seawater near the eastern coast. There can be ten, even hundred times more phytoplankton cells in water in the Western part of the Black Sea, which is well fertilized by large rivers, such as the Danube (whose mouth is visible at the top left in the full image).

As one can observe in this image, at the moment, the tiny organisms, usually invisible to the naked eye, are so concentrated in the waters of the sea that they are visible “en mass” as a blue and green phytoplankton bloom (click here for previous images).



Straits Connecting Black, Marmara and Aegean Seas – July 23rd, 2011

40.6N 28.2E

July 23rd, 2011 Category: Image of the day, Lakes, Rivers

Black Sea - July 14th, 2011

While the Aegean and Mediterranean Seas (below) are dotted with hundreds of Greek and Turkish islands, few are visible in the Black Sea (upper right).

The Black Sea is connected to the Sea of Marmara (center) via the Bosphorus Strait, with the city of Istanbul located on either side. The Sea of Marmara is then linked to the Aegean Sea through the Dardanelles.

In the upper left quadrant, the Danube River can be seen flowing along the border of Romania (above) and Bulgaria (below), to its delta on the shores of the Black Sea.


Danube and Drava Rivers Flowing by Lake Balaton, Hungary

46.8N 17.7E

March 27th, 2011 Category: Lakes, Rivers

Hungary - March 23rd, 2011

Lake Balaton, the large, green body of water near the center, is a freshwater lake in the Transdanubian region of Hungary and the largest lake in Central Europe.The northern shore is mountainous, while the southern is flat.

The Zala River provides the largest inflow of water to the lake, and the canalized Sió is the only outflow. Here, the lake appears darkest green on the southwestern end, where the Zala River enters, and lighest on the northeastern end where the Sió exits.

Two other rivers can also be observed: the Danube and the Drava. The Danube flows across the top part of the image, north of the lake, before bending almost 90 degrees and flowing parallel to the right edge. The Drava flows across the bottom of the image, south of the lake.

Snow Blanketing the Ground of Romania and Central Europe – December 30th, 2010

46.9N 23.6E

December 30th, 2010 Category: Image of the day, Mountains, Rivers

Romania and Central Europe - December 29th, 2010

European travel descended into chaos in late December as a second wave of snow and sub-zero weather conditions swept as far south as Italy, paralysing airports, motorways and public transport.

Here, southern Italy (bottom left corner) is snow free, while on the other side of the Adriatic Sea, snow can be observed parallel to the coast in Croatia, Bosnia and Herzegovina and Montenegro. Northern Albania and Macedonia appear clear.

Further inland, snow blankets Serbia and Romania and Bulgaria near its border with Romania. The border between the two is marked by the Danube River, which appears as a dark blue line through the snow.

Although visible through the snow are the peaks of the Carpathian Mountains, a large arch of mountains that spans central Europe. A large portion of the range is located in Romania, which is completely blanketed in snow.  Beyond the arch of the mountains, Moldova and part of the Ukraine are snow covered as well.

Hundreds of flights to and from Europe’s busiest airports were cancelled and millions of passengers left stranded in France, Germany, Belgium and Scandinavia as airports closed or faced severe delays.

Thousands spent the night in terminals as blizzards continued and authorities struggled to clear snow from runways and cope with high winds.

Entire Arc of Carpathian Mountains Stretching Across Europe

46.6N 25.9E

June 25th, 2010 Category: Mountains, Rivers

Central and Eastern Europe - June 7th, 2010

Central and Eastern Europe - June 7th, 2010

The Carpathian Mountains or Carpathians are a range of mountains forming an arc roughly 1,500 km (932 mi) long across Central and Eastern Europe, making them the largest mountain range in Europe. Here, the entire arc is visible, reaching across many countries.

The chain of mountain ranges stretches from the Czech Republic (3%) in the northwest to Slovakia (17%), Poland (10%), Hungary (4%), Ukraine (11%) and Romania (55%) in the east, to the Iron Gates on the River Danube between Romania and Serbia in the south.

The highest range within the Carpathians are the Tatras, on the border of Poland and Slovakia, where the highest peaks exceed 2,600 m (8,530 ft), followed by the Southern Carpathians in Romania, where the highest peaks exceed 2,500 m (8,202 ft).

Upon opening the full image, several rivers can be seen flowing down from the Southern Carpathians in Romania. The Danube River is also visible, making its way across the center of the Romanian Plain.