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Thalweg Doctrine
In geography and fluvial geomorphology, a thalweg or talweg () is the line of lowest elevation within a valley or watercourse. Under international law, a thalweg is the middle of the primary navigable channel of a waterway that defines the boundary line between states. Also under international law, thalwegs can acquire special significance because disputed river borders are often deemed to run along the river's thalweg. Etymology The word ''thalweg'' is of 19th-century German origin. The German word (modern spelling ) is a compound noun that is built from the German elements (since Duden's orthography reform of 1901 written ) meaning ''valley'' (cognate with ''dale'' in English), and , meaning ''way.'' It literally means "valley way" and is used, with its modern spelling , in daily German to describe a path or road that follows the bottom of a valley, or in geography with the more technical meaning also adopted by English. Hydrology In hydrological and fluvial landforms, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalweg
In geography, hydrography, and fluvial geomorphology, a thalweg or talweg () is the line or curve of lowest elevation within a valley or watercourse. Its vertical position in maps is the nadir (greatest depth, echo sounding, sounding) in the stream profile. Under international law, a thalweg is instead taken to be the middle of the primary navigable channel of a waterway which is the default legal presumption for the border, boundary between entities such as Country, states. Thalwegs can have local proprietorial and administrative significance because their formerly somewhat shifting position, reliant on renewed soundings, now more fixed as described internationally, is part of centuries-old custom and practice in some jurisdictions. In some jurisdictions and between some states the median line (between banks) is the preferred boundary presumption as may extend from estuaries. Also being easy to map, drawing "turning points" are the solution for a few major rivers such as the St L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shatt Al-Arab
The Shatt al-Arab ( ar, شط العرب, lit=River of the Arabs; fa, اروندرود, Arvand Rud, lit=Swift River) is a river of some in length that is formed at the confluence of the Euphrates and Tigris rivers in the town of al-Qurnah in the Basra Governorate of southern Iraq. The southern end of the river constitutes the Iran–Iraq border down to its mouth, where it discharges into the Persian Gulf. The Shatt al-Arab varies in width from about at Basra to at its mouth. It is thought that the waterway formed relatively recently in geological time, with the Tigris and Euphrates originally emptying into the Persian Gulf via a channel further to the west. Kuwait's Bubiyan Island is part of the Shatt al-Arab delta. The Karun, a tributary which joins the waterway from the Iranian side, deposits large amounts of silt into the river; this necessitates continuous dredging to keep it navigable. The area used to hold the largest date palm forest in the world. In the mid-1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treaty Of Versailles
The Treaty of Versailles (french: Traité de Versailles; german: Versailler Vertrag, ) was the most important of the peace treaties of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919 in the Palace of Versailles, exactly five years after the assassination of Archduke Franz Ferdinand, which led to the war. The other Central Powers on the German side signed separate treaties. Although the armistice of 11 November 1918 ended the actual fighting, it took six months of Allied negotiations at the Paris Peace Conference to conclude the peace treaty. The treaty was registered by the Secretariat of the League of Nations on 21 October 1919. Of the many provisions in the treaty, one of the most important and controversial was: "The Allied and Associated Governments affirm and Germany accepts the responsibility of Germany and her allies for causing all the loss and damage to which the Allied and Associated Governments and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Border
Borders are usually defined as geographical boundaries, imposed either by features such as oceans and terrain, or by political entities such as governments, sovereign states, federated states, and other subnational entities. Political borders can be established through warfare, colonization, or mutual agreements between the political entities that reside in those areas; the creation of these agreements is called boundary delimitation. Some borders—such as most states' internal administrative borders, or inter-state borders within the Schengen Area—are open and completely unguarded. Most external political borders are partially or fully controlled, and may be crossed legally only at designated border checkpoints; adjacent border zones may also be controlled. Buffer zones may be setup on borders between belligerent entities to lower the risk of escalation. While ''border'' refers to the boundary itself, the area around the border is called the frontier. Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iranian Borders In Omans And Persian Gulf (Cro)
Iranian may refer to: * Iran, a sovereign state * Iranian peoples, the speakers of the Iranian languages. The term Iranic peoples is also used for this term to distinguish the pan ethnic term from Iranian, used for the people of Iran * Iranian languages, a branch of the Indo-Iranian languages * Iranian diaspora, Iranian people living outside Iran * Iranian architecture, architecture of Iran and parts of the rest of West Asia * Iranian foods, list of Iranian foods and dishes * Iranian.com, also known as ''The Iranian'' and ''The Iranian Times'' See also * Persian (other) * Iranians (other) * Languages of Iran * Ethnicities in Iran * Demographics of Iran * Indo-Iranian languages * Irani (other) * List of Iranians This is an alphabetic list of notable people from Iran or its historical predecessors. In the news * Ali Khamenei, supreme leader of Iran * Ebrahim Raisi, president of Iran, former Chief Justice of Iran. * Hassan Rouhani, former president ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umatilla, Oregon
Umatilla (, ) is a city in Umatilla County, Oregon, United States. The population in 2010 was 6,906, but the city's population includes approximately 2,000 inmates incarcerated at Two Rivers Correctional Institution. Umatilla is part of the Hermiston-Pendleton Micropolitan Statistical Area, but has the highest poverty rate (24%) and lowest Median Household Income ($38,796), of all communities in the area; trailing neighboring Hermiston in household income by nearly 23%. The city is on the south side of the Columbia River along U.S. Route 730 and I-82. The Umatilla Chemical Depot, is southwest of the city, northwest of the intersection of I-84 and I-82. History Before European settlement, the peninsula formed by the convergence of the Umatilla and Columbia rivers had been occupied by the indigenous Umatilla people for at least 10,000 years, being the site of temporary and seasonal villages, fishing and later horse breeding. On their return trip from the mouth of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Inflow
Estuary freshwater inflow is the freshwater that inflow (hydrology), flows into an estuary. Other types of environmental flows include ''instream flow'', the freshwater water flowing in rivers or streams, and ''estuary outflow'', the Outflow (hydrology), outflow from an estuary to the ocean. Estuaries Freshwater inflow: Freshwater flows into an estuary and mixes with the marine water of the estuary, estuarine ecosystem. The mixing of freshwater inflow and the seawater, marine water of the estuary, estuarine ecosystem occurs spatially and temporally from climatic influences including tidal action, seasonal variability and storms. Mixing is affected by the amount of estuarine system. The tides and the volume of the receiving estuary govern the volume of seawater. Tides are defined as the periodic rise and fall of the surface of the sea along the coast that are driven by the gravitational pull of the moon and of the sun. Although estuaries are influenced by the tides, they are ofte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stream Bed
A stream bed or streambed is the bottom of a stream or river A river is a natural flowing watercourse, usually freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the ... (bathymetry) or the physical confine of the normal water flow (Channel (geography), channel). The lateral confines or channel margins are known as the stream Bank (geography), banks or river banks, during all but flood stage. Under certain conditions a river can branch from one stream bed to multiple stream beds. A flood occurs when a stream overflows its banks and flows onto its flood plain. As a general rule, the bed is the part of the stream channel, channel up to the normal water line, and the banks are that part above the normal water line. However, because water flow varies, this differentiation is subject to local interpretation. Usually, the bed is kept clear o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrology
Hydrology () is the scientific study of the movement, distribution, and management of water on Earth and other planets, including the water cycle, water resources, and environmental watershed sustainability. A practitioner of hydrology is called a hydrologist. Hydrologists are scientists studying earth or environmental science, civil or environmental engineering, and physical geography. Using various analytical methods and scientific techniques, they collect and analyze data to help solve water related problems such as environmental preservation, natural disasters, and water management. Hydrology subdivides into surface water hydrology, groundwater hydrology (hydrogeology), and marine hydrology. Domains of hydrology include hydrometeorology, surface hydrology, hydrogeology, drainage-basin management, and water quality, where water plays the central role. Oceanography and meteorology are not included because water is only one of many important aspects within those fields. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Orthography
German orthography is the orthography used in writing the German language, which is largely phonemic. However, it shows many instances of spellings that are historic or analogous to other spellings rather than phonemic. The pronunciation of almost every word can be derived from its spelling once the spelling rules are known, but the opposite is not generally the case. Today, Standard High German orthography is regulated by the (Council for German Orthography), composed of representatives from most German-speaking countries. Alphabet The modern German alphabet consists of the twenty-six letters of the ISO basic Latin alphabet plus four special letters. Basic alphabet 1in Germany 2in Austria Special letters German has four special letters; three are vowels accented with an umlaut () and one is a ligature of and (; called "ess-zed/zee" or "sharp s"), all of which are officially considered distinct letters of the alphabet, and have their own names separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
