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DEAD See also:SEA , a See also:lake in See also:Palestine occupying the deepest See also:part of the valley See also:running along the See also:line of a See also:great " See also:fault " that has been traced from the Gulf of See also:Akaba (at the See also:head of the Red Sea) to See also:Hermon. This fracture was caused after the end of the See also:Eocene See also:period by the See also:earth-See also:movement which resulted in the raising of the whole region out of the sea. Level for level, the more See also:ancient rocks are on the eastward See also:side of the lake: the cretaceous See also:lime-stones that surmount the older volcanic substrata come down on the western side to the See also:water's edge, while on the eastern side they are raised between 3000 and 4000 feet above it. In the See also:Pleistocene period the whole of this depression was filled with water forming a lake about 200 M. See also:long See also:north to See also:south, whose See also:waters were about the same level as that of the Mediterranean Sea. With the diminishing rainfall and increased temperature that followed that period the effects of evaporation gradually surpassed the precipitation, and the waters of the lake slowly diminished to about the extent which they still display.
The length of the sea is 47 m., and its maximum breadth is about 91 m.; its See also:area is about 340 sq. m. It lies nearly north and south. Its See also:surface being 1289–1300 ft. below the level of the Mediterranean Sea, it has of course no outlet. It is bounded on the north by the broad valley of the See also:Jordan; on the See also:east by the rapidly rising terraces which culminate in the Moabite See also:plateau, 3100 ft. above the level of the lake; on the south by the See also:desert of the Arabah, which rises to the See also:watershed between the Dead and the Red Sea—651 m. from the former, 461 from the latter; height 66o ft.—and on the See also:west by the Judean mountains which attain a height of 3300 ft. On the east side a See also:peninsula, El-Lisan (" the See also:tongue "), of See also: The surface level of the lake varies with the See also:season, and See also:recent observations taken on behalf of the Palestine Exploration Fund seem to show that there are probably cyclical See also:variations also (ultimately dependent on the rainfall), the nature and periodicity of which there are as yet no sufficient data to determine. In 1858 there was a small See also:island near the north end rising so or 12 ft. above the surface and connected with the shore by a See also:causeway; this has been submerged since 1892; and owing to the See also:gradual rise of level within these years the fords south of the Lisan, and the pathway which formerly rounded the See also:Ras Feshkhah, are now no longer passable. The slopes on each side of the sea are furrowed with water- courses, some of them perennial, others See also:winter torrents only. The See also:chief affiuents of the sea are as follows:—on the north, Jordan and `See also:Ain es-Suweimeh; on the east Wadis Ghuweir, Zerka See also:Main (See also:Callirrhoe), Mojib (Arnon), Ed-Dera'a, and el-Hesi; on the west, Wadis Muhawat and Seyal, `Ain Jidi (En-Gedi), See also:Wadi el Merabbah, `Ain Ghuweir, Wadi el-Nar, `Ain Feshkhah. The quantity of water poured daily into the sea is not less than 6,000,000 tons, all of which has to be carried off by evaporation. The consequence of the ancient evaporation, by which the great Pleistocene lake was reduced to its See also:present modest dimensions, and of the ceaseless modern daily evaporation, is the impregnation of the waters of the lake with salts and other See also:mineral substances to a remarkable degree. Ocean water contains on an See also:average 4-6% of salts: Dead Sea water contains 25%. The following See also:analysis, by Dr See also:Bernays, gives the contents of the water more accurately: Specific gravity 1.1528 at 15.5° C. See also:Calcium carbonate . 70.00 grains Calcium sulphate . 163.39 See also:Magnesium nitrate . 175.01 See also:Potassium chloride . 1089.06 See also:Sodium chloride 5106.00 Calcium chloride 594.46 Magnesium chloride 7388.21 Magnesium bromide 345.80 See also:Iron and See also:aluminium oxides 10.50 Organic See also:matter, water of crystalliza- tion, loss . . . 317.57 See also:Total See also:residue per See also:gallon . . 15260.00 The See also:density of the water averages 1.166. It increases from north to south, and with the depth. The increase is at first rapid, then, after reaching a certain point, becomes more See also:uniform. At 300 metres its density is 1.253. The boiling point is 221° F. To the quantity of solid matter suspended in its water the Dead Sea owes, beside its saltness, its buoyancy and its poisonous properties. The human See also:body floats on the surface without exertion. Owing principally to the large proportion of chloride and bromide of See also:magnesia no See also:animal See also:life can exist in its water. See also:Fish, which abound in the Jordan and in the brackish See also:spring-fed lagoons that exist in one or two places around its shores (such as `Ain Feshkhah), See also:die in a very See also:short See also:time if introduced into the main waters of the lake. The only animal life reported from the lake has been some See also:tetanus and other bacilli said to have been found in its mud; but this See also:discovery has not been confirmed. To the chloride of calcium is due the smooth and oily feeling of the water, and to the chloride of magnesia its disagreeable See also:taste. In See also:Roman times curative properties were ascribed to the waters: Mukaddasi (A.o. 985) asserts that See also:people assembled to drink it on a feast See also:day in See also:August. The salt of the Dead Sea is collected and sold in See also:Jerusalem; See also:smuggling of salt (which in See also:Turkey is a See also:government See also:monopoly) is a See also:regular occupation of the Bedouin. The See also:bitumen which floats to shore is also collected. The origin of this bitumen is disputed: it was supposed to be derived from subaqueous strata of bituminous marl and See also:rose to the surface when loosened by earthquakes. It is, however, now more generally believed that it exists in the See also:breccia of some of the valleys on the west side of the lake, which is washed into the sea andsubmerged, till the small stones by which it is sunk are loosened and fall out, when the bitumen rises to the surface. See also:History.—The earliest references to the sea or its See also:basin are in the patriarchal narratives of See also:Lot and See also:Abraham, the most striking being the destruction of the neighbouring cities of Sodom and Gomorrah. (See SODOM.) The biblical name is the Salt Sea, the Sea of the Arabah (the south end of the Jordan valley), or the East Sea. The name in See also:Josephus is Asphaltites, referring to the bituminous deposits above alluded to. The modern name is See also:Bahr Lilt or " Sea of Lot "—a name hardly to be explained as a survival of a vague tradition of the See also:patriarch, but more probably due to the See also:literary influences of the See also:Hebrew Scriptures and the See also:Koran filtering through to the modern inhabitants or their ancestors. The name Dead Sea first appears in See also:late See also:Greek writers, as See also:Pausanias and See also:Galen. At En-Gedi on its western See also:bank See also:David for a while took See also:refuge. South of it is the stronghold of Masada, built by See also:Jonathan Maccabaeus and fortified by See also:Herod in 42 B.C., where the last stand of the See also:Jews was made against the See also:Romans after the fall of Jerusalem, and where the See also:garrison, when the defences were breached, slew themselves rather than fall into Roman hands. The sea has been but little navigated. See also:Tacitus and Josephus mention boats on the lake, and boats are shown upon it in the Madeba See also:mosaic. The See also:navigation dues formed part of the See also:revenue of the lords of See also:Kerak under the crusaders. In modern times navigation is practically nil. The lake, with the whole See also:Jericho See also:plain, is claimed as the See also:personal See also:property of the See also:sultan. The See also:medieval travellers brought See also:home many See also:strange legends of the sea and its peculiarities—some absurd, others with a basis of fact. The See also:absence of sea-birds, due to the absence of fish, probably accounts for the See also:story that no birds could See also:fly over it. The absence of vegetation on its shores, due to the scanty rainfall and See also:general want of fresh water—except in the neighbourhood of springs• like `Ain Feshkhah and `Ain Jidi, where a Iuxuriant subtropical vegetation is found—accounts for the story that no plant could live in the poisonous See also:air which broods over the sea. The mists, due to the great See also:heat and excessive evaporation, and the noxious miasmata, especially of the southern region, were exaggerated into the See also:noisome vapours that the " See also:black and stinking " waters ever exhaled. The See also:judgment on Sodom and Gomorrah (which of course they believed to be under the waters of the lake, in accordance with the absurd theory first found in Josephus and still often repeated) blinded these See also:good pilgrims to the ever-fresh beauty of this most lovely lake, whose See also:blue and sparkling waters See also:lie deep between rocks and precipices of unsurpassable grandeur. The See also:play of brilliant See also:colours and of ever-changing contrasts of See also:light and shade on those rugged See also:mountain-sides and on the surface of the sea itself might have been expected to See also:appeal to the,,.~nost prosaic. The surface of the sea is generally smooth (seldom,'' however, absolutely inert as the pilgrims represented it), but is frequently raised by the north winds into waves, which, owing to the See also:weight and density of the water, are often of great force.
The first to navigate the sea in modern times was an Irish traveller, Costigan by name, in August and See also:September 1835. Owing largely to the folly of his Greek servant, who, without his See also:master's knowledge, threw overboard the drinking-water to lighten the See also:boat, the explorer after circumnavigating the sea reached Jericho in an exhausted See also:condition, andwas there attacked by a severe fever. The greatest difficulty was experienced in obtaining assistance for him, but he was ultimately conveyed on See also:camel-back to Jerusalem, where he died; his See also:grave is in the Franciscan See also:cemetery there. His See also:fate was shared by his successor, a See also:British See also:naval officer, See also:Lieutenant Molyneux (1847), whose party was attacked and robbed by See also:Bedouins. W. F. See also:Lynch, an See also:American explorer (1848), equipped by the See also:United States government, was more successful, and he may claim to be the first who examined its shores and sounded its depths. Since his time the duc de See also:Luynes, Lartet, See also: Before we can be said to know all that we might regarding this most interesting of lakes further extensive scientific observations are necessary; but these are extremely difficult owing to the impossibility of maintaining self-registering See also:instruments in a region practically closed to Europeans for nearly See also:half the See also:year by the stifling heat, and inhabited only by Bedouins, who are the worst See also:kind of ignorant, thievish and mischievous savages. (R. A. S. Additional information and CommentsThere are no comments yet for this article.
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