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Southern Mesopotamia
Lower Mesopotamia is a historical region of Mesopotamia. It is located in the alluvial plain of Iraq from the Hamrin Mountains to the Faw Peninsula near the Persian Gulf. In the Middle Ages it was also known as the '' Sawad'' and al-Jazira al-sflia ("Lower Jazira"), which strictly speaking designated only the southern alluvial plain, and Arab Iraq, as opposed to Persian Iraq, the Jibal. Lower Mesopotamia was home to Sumer and Babylonia. Delimitation The medieval Arab geographers placed the northern border between Iraq and Upper Mesopotamia (the ''Jazirah'') in a line running from Anbar on the Euphrates to Tikrit on the Tigris, although later it was shifted to a line running due west from Tikrit, thus including several towns on the Euphrates past Anbar into Iraq. Geography An alluvial plain begins north of Tikrit Near Hamrin Mountains and extends to the Persian Gulf. Here the Tigris and Euphrates lie above the level of the plain in many places, and the whole area is a river ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tigris
The Tigris ( ; see #Etymology, below) is the eastern of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of the Armenian Highlands through the Syrian Desert, Syrian and Arabian Deserts, before merging with the Euphrates and reaching to the Persian Gulf. The Tigris passes through historical cities like Mosul, Tikrit, Samarra, and Baghdad. It is also home to archaeological sites and ancient religious communities, including the Mandaeans, who use it for Masbuta, baptism. In ancient times, the Tigris nurtured the Assyria, Assyrian Empire, with remnants like the relief of Tiglath-Pileser I, King Tiglath-Pileser. Today, the Tigris faces modern threats from geopolitical instability, dam projects, poor water management, and climate change, leading to concerns about its sustainability. Efforts to protect and preserve the river's legacy are ongoing, with local archaeologists and activists working to safeguard its future ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Milh
Lake Milh (), also known as Lake Razzaza (), is an artificial lake located a few miles west of Karbala, Iraq (). The lake is located in a depression into which excess water from Lake Habbaniyah, which comes from the Euphrates River, is diverted through a controlled escape channel or canal. The lake is listed as a wetland of international importance. The lake is rather shallow and the water level changes seasonally. Due to its salt content and changing water level, this largest freshwater lake in Iraq has lost its important stock of fish species and only a few recreational areas exist around the lake. Geography The lake, also termed the Karbala Gap, covers an area of enclosed by deserts with a few low hills on the shoreline. The lake and its surrounding area lie in an elevation range of . It is a deep closed lake in a sand and silt basin. The western part of the valley surrounding the lake has thick forest cover, as well as orchards. In the eastern and southern surroundings, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salinity
Salinity () is the saltiness or amount of salt (chemistry), salt dissolved in a body of water, called saline water (see also soil salinity). It is usually measured in g/L or g/kg (grams of salt per liter/kilogram of water; the latter is dimensionless and equal to per mille, ‰). Salinity is an important factor in determining many aspects of the chemistry of natural waters and of biological processes within it, and is a state function, thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water. A contour line of constant salinity is called an ''isohaline'', or sometimes ''isohale''. Definitions Salinity in rivers, lakes, and the ocean is conceptually simple, but technically challenging to define and measure precisely. Conceptually the salinity is the quantity of dissolved salt content of the water. Salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, and sod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amarah
Amarah (), also spelled Amara, is a city in south-eastern Iraq, located on a low ridge next to the Tigris River waterway south of Baghdad about 50 km (31 mi) from the border with Iran. It lies at the northern tip of the marshlands between the Tigris and Euphrates. It had a population of about 340,000 in 2002, 420,000 in 2005, and 1,100,000 in 2020. Amarah is the seat of the Maysan Province. A major trading center for the surrounding agricultural area, the city is known for woven goods and silverware. The staple economic goods produced in northern Amarah are winter cereals such as wheat and barley, as well as animals such as sheep and horses. History The city was founded in the 1860s as an Ottoman military outpost from which the empire tried to control the warring Banu Lam and Al Bu Muhammad tribes. In 1915 Amarah was captured by the British. Before the revolution in 1958 Amarah was known for its feudal system with local estate-holders maintaining private militias. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Table
The water table is the upper surface of the phreatic zone or zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with groundwater, which may be fresh, saline, or brackish, depending on the locality. It can also be simply explained as the depth below which the ground is saturated. The portion above the water table is the vadose zone. It may be visualized as the "surface" of the subsurface materials that are saturated with groundwater in a given vicinity. In coarse soils, the water table settles at the surface where the water Hydraulic head, pressure head is equal to the atmospheric pressure (where gauge pressure = 0). In soils where capillary action is strong, the water table is pulled upward, forming a capillary fringe. The groundwater may be from precipitation or from more distant groundwater flowing into the aquifer. In areas with sufficient precipitation, water infiltrates through pore spaces in the soil, passing through t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt (chemistry)
In chemistry, a salt or ionic compound is a chemical compound consisting of an assembly of positively charged ions ( cations) and negatively charged ions ( anions), which results in a compound with no net electric charge (electrically neutral). The constituent ions are held together by electrostatic forces termed ionic bonds. The component ions in a salt can be either inorganic, such as chloride (Cl−), or organic, such as acetate (). Each ion can be either monatomic, such as sodium (Na+) and chloride (Cl−) in sodium chloride, or polyatomic, such as ammonium () and carbonate () ions in ammonium carbonate. Salts containing basic ions hydroxide (OH−) or oxide (O2−) are classified as bases, such as sodium hydroxide and potassium oxide. Individual ions within a salt usually have multiple near neighbours, so they are not considered to be part of molecules, but instead part of a continuous three-dimensional network. Salts usually form crystalline structures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irrigation
Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been developed by many cultures around the world. Irrigation helps to grow crops, maintain landscapes, and revegetation, revegetate disturbed soils in dry areas and during times of below-average rainfall. In addition to these uses, irrigation is also employed to protect crops from frost, suppress weed growth in grain fields, and prevent soil consolidation. It is also used to cool livestock, reduce dust, dispose of sewage, and support mining operations. Drainage, which involves the removal of surface and sub-surface water from a given location, is often studied in conjunction with irrigation. There are several methods of irrigation that differ in how water is supplied to plants. Surface irrigation, also known as gravity irrigation, is the olde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silt
Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension (chemistry), suspension with water. Silt usually has a floury feel when dry, and lacks Plasticity (physics), plasticity when wet. Silt can also be felt by the tongue as granular when placed on the front teeth (even when mixed with clay particles). Silt is a common material, making up 45% of average modern mud. It is found in many river deltas and as wind-deposited accumulations, particularly in central Asia, north China, and North America. It is produced in both very hot climates (through such processes as collisions of quartz grains in dust storms) and very cold climates (through such processes as glacial grinding of quartz grains.) Loess is soil rich in silt which makes up some of the most fertile agricultural land on Earth. However, silt is very vulnerable to erosion, and it has poo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Hammar
Lake Hammar (, ) is a saline lake in southeastern part of Iraq within the Hammar Marshes. It has an area of 600–1,350 km2. Water level in the lake fluctuates, with maximum depths varying from 1.8 metres (winter) to 3.0 metres (spring). The lake is an important wetland site for birds. The native inhabitants are Marsh Arabs, some of whom occupy villages on artificial, floating islands. Hammar Lacus, a feature on Titan, the moon of Saturn, is named after Hammar Lake. at IAU. Lake Hammar is featured in the 2024 videogame Indiana Jones and the Great Circle
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Al Qurnah
Al-Qurnah (Kurnah or Qurna, meaning connection/joint in Arabic) is a town in southern Iraq about 74 km northwest of Basra, that lies within the conglomeration of Nahairat. Qurna is located at the confluence point of the Tigris and Euphrates rivers to form the Shatt al-Arab waterway. Local folklore holds Qurnah to have been the original site of biblical paradise, the Garden of Eden, and location of the Tree of Knowledge. History Local folklore holds Qurnah to have been the site of the Garden of Eden and the location of a city built by general Seleucus Nicator I. An ancient tree is celebrated locally and shown to the tourists as the actual Tree of Knowledge of the Bible. The tree died some time ago and replacement trees were planted. The tomb of Ezra is also described to be nearby and found further upstream on the river Tigris. In 1855, Al Qurnah was the site of the Qurnah Disaster, in which local tribes attacked and sank a convoy of a ship and rafts carrying 240 cases of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are fresh water and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of ocean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
