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Mediterranean Sea

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The Mediterranean Sea is an intercontinental sea positioned between Europe to the north, Africa to the south and Asia to the east, covering an approximate area of 2.5 million km². The term Mediterranean derives from the Latin mediterraneus, 'inland' (medius, 'middle' + terra, 'land, earth').

The Mediterranean Sea has been known by a number of alternative names throughout human history. It was, for example, commonly called Mare Nostrum (Latin, Our Sea) by the Romans. Presently, "The Med" is a common English language contraction for the Mediterranean Sea and its surrounding regions when employed in informal speech. In the Bible, it is referred to as the Great Sea or the Western Sea. In modern Hebrew, it is called הים התיכון, "the middle sea", a literal adaptation of the German equivalent Mittelmeer. In Turkish, it is Akdeniz.

Map of the Mediterranean Sea

The Mediterranean Sea is connected to the Atlantic Ocean by the Strait of Gibraltar on the west and to the Sea of Marmara and Black Sea, by the Dardanelles and the Bosporus respectively, on the east. The Sea of Marmara is often considered a part of the Mediterranean Sea, whereas the Black Sea is generally not. The man-made Suez Canal in the south-east connects the Mediterranean Sea with the Red Sea.

Tides are very limited in the Mediterreanean as a result of the narrow connection with the ocean.

The Mediterranean climate is generally one of wet winters and hot, dry summers. Special crops of the region are olives, grapes, oranges, tangerines, and cork. The region has a long history of civilization.

Large islands in the Mediterranean include:

Modern states bordering the Mediterranean Sea are:

Other countries that don'Portugal" title ="Portugal">Portugal and parts of Bulgaria and Romania, are technically Mediterranean in their climate, fauna and flora.

The Mediterranean Sea is sub-divided into a number of smaller seas, each with their own designation (from west to east):

In addition to the seas, a number of gulfs and straits are also recognised:

Geology of the Mediterranean

The geology of the Mediterranean is quite complex, involving multiple periods of drying and re-flooding from the Atlantic Ocean. Sediment samples from the bottom of the Mediterranean Sea that include evaporite minerals, soils, and fossil plants show that about 7.2 million years ago in the late Miocene period the Strait of Gibraltar was blocked and the Mediterranean Sea evaporated into a deep basin with a bottom over two miles below the world ocean level. The Sea was reduced to a couple of lakes with varying salinity and probably even dried up, leaving for quite some time a desolate salt basin.

The first solid evidence for this came in the summer of 1970, when geologists aboard the deep sea research and drilling ship Glomar Challenger brought up drill cores containing gypsum, anhydrite, rock salt, and various other evaporite minerals that only form from drying of brine or seawater. One drill core contained a wind-blown cross-bedded deposit of deep-sea foraminiferal ooze which had dried into dust and been blown about by a sandstorm and ended up in a brine lake. These layers were alternated with layers containing marine fossils, indicating the different drying and flooding periods. Other evidence of drying comes from the remains of many (now submerged) canyons that were cut into the sides of the Mediterranean basin by river action when it was dry. The area underwent repeated flooding and dessication over a 700,000 year span. About 5.4 million years ago at the start of the Pliocene period the barrier at the Strait of Gibraltar broke, premanently reflooding the basin.

The Mediterranean Sea has an average depth of 1,500 m and its deepest point is over 5,000 m (in the Ionian Sea). The coastline extends 46,000 km surrounded by 22 countries.

In the last few centuries, humankind has done much to alter Mediterranean geology. Structures have been built all along the coastlines, exacerbating and rerouting erosional patterns. Many pollution-producing boats travel the sea that unbalance the natural chemical ratios of the region. Beaches have been mismanaged, and the overuse of the sea's natural and marine resources continues to be a problem. This misuse speeds along and/or confounds natural processes. The actual geography has also been altered by the building of dams and canals. The perfect little Sea that geology gave Western history is, in many ways, in great jeopardy.

The Mediterranean was once thought to be the remnant of the Tethys Sea, which formerly girdled the Eastern Hemisphere. It is now known to be a structurally younger basin.

Though the flooding of the Mediterranean happened long before any human being could observe it, it is sometimes referred as a possible basis for the Biblical story of Noah, or even the myth of Atlantis.

See also

External links

ar:بحر ابيض متوسط bg:Средиземно море ca:Mar Mediterrània cs:Středozemní moře cy:Y Môr Canoldir da:Middelhavet de:Mittelmeer et:Vahemeri es:Mar Mediterráneo eo:Mediteranea maro fa:مدیترانه fr:Méditerranée gl:Mar Mediterráneo hr:Sredozemno more it:Mar Mediterraneo he:הים התיכון la:Mare Mediterraneum ja:地中海 nds:Middelmeer nl:Middellandse Zee no:Middelhavet pl:Morze Śródziemne pt:Mar Mediterrâneo ro:Marea Mediterană ru:Средиземное море sl:Sredozemsko morje fi:Välimeri sv:Medelhavet uk:Середземне море wa:Mîtrinne Mer zh:地中海

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