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Dam Of Marib
The Marib Dam ( ar, سَدّ مَأْرِب ', or ar, سُدّ مَأْرِب ') is a modern dam blocking the '' Wadi'' or Valley of Adhanah (, also ''Dhanah'' ) in the Balaq Hills, located in the Ma'rib Governorate in Yemen. The current dam was built in the 1980s and is close to the ruins of the ancient dam, first built in the 8th century BC. It was one of the engineering wonders of the ancient world and a central part of the Sabaean and Himyarite kingdoms around Ma'rib. There are also other important ancient dams in Yemen such as the Dam of Jufaynah, the Dam of Khārid, the Dam of Aḑraʾah, the Dam of Miqrān and the Dam of Yathʾān. Historically, Yemen has been recognized for the magnificence of its ancient water engineering. From the Red Sea coast to the limits of the Empty Quarter Desert are numerous ruins of small and large dams made of earth and stone. Ancient dam The site of the great Dam of Marib, also called the Dam of 'Arim ( ar, سَدّ ٱلْعَرِم, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabian Peninsula
The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate. At , the Arabian Peninsula is the largest peninsula in the world. Geographically, the Arabian Peninsula includes Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, the United Arab Emirates (UAE), and Yemen, as well as the southern portions of Iraq and Jordan. The largest of these is Saudi Arabia. In the classical era, the southern portions of modern-day Syria, Jordan, and the Sinai Peninsula were also considered parts of Arabia (see Arabia Petraea). The Arabian Peninsula formed as a result of the rifting of the Red Sea between 56 and 23 million years ago, and is bordered by the Red Sea to the west and southwest, the Persian Gulf and the Gulf of Oman to the northeast, the Levant and Mesopotamia to the north and the Arabian Sea and the Indian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliff
In geography and geology, a cliff is an area of rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually composed of rock that is resistant to weathering and erosion. The sedimentary rocks that are most likely to form cliffs include sandstone, limestone, chalk, and dolomite. Igneous rocks such as granite and basalt also often form cliffs. An escarpment (or scarp) is a type of cliff formed by the movement of a geologic fault, a landslide, or sometimes by rock slides or falling rocks which change the differential erosion of the rock layers. Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, they are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus. Many cliffs also fea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sluice
Sluice ( ) is a word for a channel controlled at its head by a movable gate which is called a sluice gate. A sluice gate is traditionally a wood or metal barrier sliding in grooves that are set in the sides of the waterway and can be considered as a bottom opening in a wall. Sluice gates are one of the most common hydraulic structures in controlling flow rate and water level in open channels such as rivers and canals. They also could be used to measure the flow. A water channel containing a sluice gate forms a type of lock to manage the water flow and water level. It can also be an open channel which processes material, such as a River Sluice used in gold prospecting or fossicking. A mill race, leet, flume, penstock or lade is a sluice channeling water toward a water mill. The terms sluice, sluice gate, knife gate, and slide gate are used interchangeably in the water and wastewater control industry. They are also used in wastewater treatment plants and to recover minerals in minin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spillway
A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure that water does not damage parts of the structure not designed to convey water. Spillways can include floodgates and fuse plugs to regulate water flow and reservoir level. Such features enable a spillway to regulate downstream flow—by releasing water in a controlled manner before the reservoir is full, operators can prevent an unacceptably large release later. Other uses of the term "spillway" include bypasses of dams and outlets of channels used during high water, and outlet channels carved through natural dams such as moraines. Water normally flows over a spillway only during flood periods, when the reservoir has reached its capacity and water continues entering faster than it can be released. In contrast, an intake tower is a structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross Section (geometry)
In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces. Cutting an object into slices creates many parallel cross-sections. The boundary of a cross-section in three-dimensional space that is parallel to two of the axes, that is, parallel to the plane determined by these axes, is sometimes referred to as a contour line; for example, if a plane cuts through mountains of a raised-relief map parallel to the ground, the result is a contour line in two-dimensional space showing points on the surface of the mountains of equal elevation. In technical drawing a cross-section, being a projection of an object onto a plane that intersects it, is a common tool used to depict the internal arrangement of a 3-dimensional object in two dimensions. It is traditionally crosshatched with the style of crosshatching often indicating the types of materials being used. With computed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rulers Of Sheba And Himyar
This is a list of rulers of Saba and Himyar. Mukarrib (Mukrab, Karab), a religious title that means "near to God", was used by rulers of Saba' until Karib'il Watar changed his title to ''Malik'' at the time of the kingdom of Saba' and Dhu Raydan that was established between Himyarites and Sabaeans, both descending from ancient South Arabian patriarch Qahtan The terms Qahtanite and Qahtani ( ar, قَحْطَانِي; transliterated: Qaḥṭānī) refer to Arabs who originate from South Arabia. The term "Qahtan" is mentioned in multiple ancient Arabian inscriptions found in Yemen. Arab traditions be .... The title Tubba, which means "the one who follows the sun like a shadow" was used by Himyarites to refer to their rulers. Mukaribs of Saba' Kings of Saba' Kings of Saba' & Dhu Raydan Kings of Saba' & Dhu Raydan & Hadhramaut & Yamnat 2nd Himyarite Kingdom King of Saba', Dhu Raydan, Hadramawt, Yamnat and their Arabs, on Tawdum (the high plateau) and Tihamat References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karibi-ilu
Karibi-ilu was a Mukarrib of Sabaeans, Saba' reigned in 700–680 Anno Domini, BC. The name Karibi-ilu in Akkadian language, Akkadian matches "Karab-El Bayin" in Sabaean, combined of "''KRB-El''" which means one who carries out the instructions of El (deity), El and "''BYN''" one who removes punishment. History Karibi-ilu is the son of Itamru (Yatha' Amar Watar II) who was mentioned by Sargon II in 715 BC. An Assyrian text which dates back to c. 685 Anno Domini, BC talks about the gifts sent to Sennacherib from Karibi-ilu. The gifts consisted of silver, gold, types of the most exquisite perfume called "''Rikke Tabutu''" and precious gem stones which have traditionally been exported from South Arabia. Karibi-ilu built a house or a temple called "Akitu, Bit-Akitu", to celebrate the New Year's and other holidays. See also *List of rulers of Saba and Himyar References {{reflist Mukaribs of Saba Ancient history of Yemen Middle Eastern kings 7th-century BC Yemeni people ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insigne Iemeniae
An insignia () is a sign or mark distinguishing a group, grade, rank, or function. It can be a symbol of personal power or that of an official group or governing body. On its own, an insignia is a sign of a specific or general authority and is usually made of metal or fabric. Together, insignias form a decoration with the different elements of a rank, grade, or dignity. There are many types of insignia, including civil and military decorations, crowns, emblems, and coats of arms. Singular/plural "Insignia" can be used either as a plurale tantum word, i.e. unchanged for both singular and plural, or it can take the plural form "insignias", both equally valid options. The singular "insigne" is rarely used. History The use of insignias predates history, both for personal and group (especially military) use. When the insignia was meant to be seen, it was placed at top of a pole or the head of a spear. The Persians used a golden eagle as an insignia, the Assyrians a dove, and the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yāqūt Al-Ḥamawī
Yāqūt Shihāb al-Dīn ibn-ʿAbdullāh al-Rūmī al-Ḥamawī (1179–1229) ( ar, ياقوت الحموي الرومي) was a Muslim scholar of Byzantine Greek ancestry active during the late Abbasid period (12th-13th centuries). He is known for his , an influential work on geography containing valuable information pertaining to biography, history and literature as well as geography. Life ''Yāqūt'' (''ruby'' or ''hyacinth'') was the '' kunya'' of Ibn Abdullāh ("son of Abdullāh"). He was born in Constantinople, and as his ''nisba'' "al-Rumi" ("from Rūm") indicates he had Byzantine Greek ancestry. Yāqūt was "mawali" to ‘Askar ibn Abī Naṣr al-Ḥamawī, a trader of Baghdad, Iraq, the seat of the Abbasid Caliphate, from whom he received the ''laqab'' "Al-Hamawī". As ‘Askar's apprentice, he learned about accounting and commerce, becoming his envoy on trade missions and travelling twice or three times to Kish in the Persian Gulf. In 1194 ‘Askar stopped his salary ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a ''navigation canal'' when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth Dam
An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes the dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance. Types Embankment dams come in two types: the earth-filled dam (also called an earthen dam or terrain dam) made of compacted earth, and the rock-filled dam. A cross-section of an embankment dam shows a shape like a bank, or hill. Most have a central section or core composed of an impermeable material to stop water from seeping through the dam. The core can be of clay, concrete, or asphalt concrete. This type of dam is a good choice for sites with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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