Danube Delta

The Danube Delta (Romanian: Delta Dunării pronounced [ˈdelta ˈdunərij]; Ukrainian: Дельта Дунаю, Del'ta Dunaju) is the second largest river delta in Europe, after the Volga Delta, and is the best preserved on the continent. The greater part of the Danube Delta lies in Romania (Tulcea County), while its northern part, on the left bank of the Chilia arm, is situated in Ukraine (Odessa Oblast). Its approximate surface area is 4,152 km² (1,603 sq mi), of which 3,446 km² (1,331 sq mi) is in Romania. With the lagoons of Razim–Sinoe (1,015 km² (392 sq mi) with 865 km² (334 sq mi) water surface), located south of the main delta, the total area of the Danube Delta is 5,165 km² (1,994 sq mi). The Razim–Sinoe lagoon complex is geologically and ecologically related to the delta proper and the combined territory is listed as a World Heritage Site.

Geography and geology

The modern Danube Delta began to form after 4000 BCE in a bay of the Black Sea, when the sea rose to its present level. A sandy barrier blocked the Danube bay where the river initially built its delta. Upon filling the bay with sediment, the delta advanced outside this barrier-blocked estuary after 3500 BCE, building several successive lobes: the St. George I (3500–1600 BCE), the Sulina (1600–0 BCE), the St. George II (0 BC–present) and the Chilia or Kilia (1600 CE–present). Several other internal lobes were constructed in the lakes and lagoons bordering the Danube Delta to the north (Chilia I and II) and toward the south (Dunavatz). Much of the alluvium in the delta and major expansion of its surface area in the form of lobes resulted from soil erosion associated with the clearing of forests in the Danube basin during the 1st and 2nd millennium. Geologist Liviu Giosan told The New York Times:

Delta

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Danube

The Danube (/ˈdænjuːb/ DAN-ewb, also known as Donau or Danubio) is Europe's second-longest river, after the Volga River, and also the longest river in the European Union region. It is located in Central and Eastern Europe.

The Danube was once a long-standing frontier of the Roman Empire, and today flows through 10 countries. Originating in Germany, the Danube flows southeast for 2,860 km (1,780 mi), passing through or touching the border of Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine before emptying into the Black Sea. Its drainage basin extends into nine more countries.

Names and etymology

The Latin name Dānuvius is one of a number of "Old European" river names derived from a Proto-Indo-European *dānu. Other river names from the same root include the Don, Donets, Dzvina/Duna, Dysna, Dnieper and Dniestr. In Rigvedic Sanskrit, dānu means "fluid, drop", in Avestan, the same word means "river". In the Rigveda, Dānu once appears as the mother of Vrtra. It is possible that dānu in Scythian as in Avestan was a generic word for "river": Dniepr and Dniestr, from Danapris and Danastius, are presumed to continue Scythian *dānu apara "far river" and *dānu nazdya- "near river", respectively.

Black Sea

The Black Sea is a sea between Southeastern Europe and Western Asia. It is bounded by Europe, Anatolia and the Caucasus, and drains through the Mediterranean into the Atlantic Ocean, via the Aegean Sea and various straits. The Bosphorus Strait connects it to the Sea of Marmara, and the Strait of the Dardanelles connects that sea to the Aegean Sea region of the Mediterranean. These waters separate eastern Europe and western Asia. The Black Sea is also connected to the Sea of Azov by the Strait of Kerch.

The Black Sea has an area of 436,400 km² (168,500 sq mi) (not including the Sea of Azov), a maximum depth of 2,212 m (7,257 ft), and a volume of 547,000 km³ (131,000 cu mi). The Black Sea forms in an east-west trending elliptical depression which lies between Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. It is constrained by the Pontic Mountains to the south and by the Caucasus Mountains to the east, and features a wide shelf to the northwest. The longest east-west extent is about 1,175 km (730 mi).

Romania

Coordinates: 46°N 25°E / 46°N 25°E / 46; 25

Romania (ⁱ/roʊˈmeɪniə/ roh-MAY-nee-ə; Romanian: România [romɨˈni.a]) is a unitary semi-presidential republic located in Southeastern Europe, bordering the Black Sea, between Bulgaria and Ukraine. It also borders Hungary, Serbia, and Moldova. It covers 238,391 square kilometres (92,043 sq mi) and has a temperate-continental climate. With its 19.94 million inhabitants, it is the seventh most populous member state of the European Union. Its capital and largest city, Bucharest, is the sixth largest city in the EU. The River Danube, which is Europe's second longest river after the Volga, rises in Germany and flows southeastwards for a distance of 2,857 km, coursing through ten countries before emptying in Romania's Danube Delta. Some of its 1,075 km length bordering the country drains the whole of it. The Carpathian Mountains, with their tallest peak Moldoveanu at 2,544 m (8,346 ft), cross Romania from the north to the southwest.

Modern Romania emerged within the territories of the ancient Roman province of Dacia, and was formed in 1859 through a personal union of the Danubian Principalities of Moldavia and Wallachia. The new state, officially named Romania since 1866, gained independence from the Ottoman Empire in 1877. At the end of World War I, Transylvania, Bukovina and Bessarabia united with the sovereign Kingdom of Romania. During World War II, Romania was an ally of Nazi Germany against the Soviet Union, fighting side by side with the Wehrmacht until 1944, then it joined the Allied powers after being occupied by the Red Army forces. During the war, Romania lost several territories, of which Northern Transylvania was regained after the war. Following the war, Romania became a socialist republic and member of the Warsaw Pact. After the 1989 Revolution, Romania began a transition back towards democracy and a capitalist market economy.