River Regime (hydrology)
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River Regime (hydrology)
Discharge regime, flow regime, or hydrological regime (commonly termed river regime, but that term is also used for other measurements) is the long-term pattern of annual changes to a river's discharge at a particular point. Hence, it shows how the discharge of a river at that point is expected to change over the year. The main factor affecting the regime is climate, along with relief, bedrock, soil and vegetation, as well as human activity. Like general trends can be grouped together into certain named groups, either by what causes them and the part of the year they happen (most classifications) or by the climate in which they most commonly appear (Beckinsale classification). There are many different classifications; however, most of them are localized to a specific area and cannot be used to classify all the rivers of the world. When interpreting such records of discharge, it is important to factor in the timescale over which the average monthly values were calculated. It is p ...
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Pivka (river)
The Pivka is a karst lost river in Slovenia. The river is in length. The Pivka ends in Planina Cave, where it merges with the Rak River and then the Unica River. The confluence of the Pivka and the Rak is one of the largest subterranean confluences in Europe. The Pivka created Postojna Cave Postojna Cave ( sl, Postojnska jama; german: Adelsberger Grotte; it, Grotte di Postumia) is a long karst cave system near Postojna, southwestern Slovenia. It is the second-longest cave system in the country (following the Migovec System) as wel ..., the longest cave system in Slovenia as well as one of its top tourism sites. References External links * Rivers of Inner Carniola Sinking rivers {{Slovenia-river-stub ...
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Hail
Hail is a form of solid precipitation. It is distinct from ice pellets (American English "sleet"), though the two are often confused. It consists of balls or irregular lumps of ice, each of which is called a hailstone. Ice pellets generally fall in cold weather, while hail growth is greatly inhibited during low surface temperatures. Unlike other forms of water ice precipitation, such as graupel (which is made of rime ice), ice pellets (which are smaller and translucent), and snow (which consists of tiny, delicately crystalline flakes or needles), hailstones usually measure between and in diameter. The METAR reporting code for hail or greater is GR, while smaller hailstones and graupel are coded GS. Hail is possible within most thunderstorms (as it is produced by cumulonimbus), as well as within of the parent storm. Hail formation requires environments of strong, upward motion of air within the parent thunderstorm (similar to tornadoes) and lowered heights of the freezing l ...
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Under An African Sky - Panoramio
Under may refer to: * "Under" (Alex Hepburn song), 2013 * "Under" (Pleasure P song), 2009 *Bülent Ünder (born 1949), Turkish footballer *Cengiz Ünder (born 1997), Turkish footballer *Marie Under Marie Under ( – 25 September 1980) was one of the greatest Estonian poets. She was nominated for the Nobel Prize in Literature in 12 separate years. Early life Under was born in Reval (now Tallinn), Estonia to school teachers ... (1883–1980), Estonian poet * Under (restaurant), underwater Norwegian restaurant {{disambig ...
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Chancy
Chancy is a municipality of the Canton of Geneva, Switzerland. The westernmost point of the country is located there. History Chancy is first mentioned in 1240 as ''Chancie''. Geography Chancy has an area, , of . Of this area, or 52.2% is used for agricultural purposes, while or 32.6% is forested. Of the rest of the land, or 11.0% is settled (buildings or roads), or 3.9% is either rivers or lakes and or 0.4% is unproductive land.Swiss Federal Statistical Office-Land Use Statistics
2009 data accessed 25 March 2010
Of the built up area, housing and buildings made up 5.6% and transportation infrastructure made up 2.8%. Power and water infrastructure as well as other special developed areas made up 1.7% of the area Out of the forested land, 30.0% ...
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Switzerland
). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel, St. Gallen a.o.). , coordinates = , largest_city = Zürich , official_languages = , englishmotto = "One for all, all for one" , religion_year = 2020 , religion_ref = , religion = , demonym = , german: Schweizer/Schweizerin, french: Suisse/Suissesse, it, svizzero/svizzera or , rm, Svizzer/Svizra , government_type = Federalism, Federal assembly-independent Directorial system, directorial republic with elements of a direct democracy , leader_title1 = Federal Council (Switzerland), Federal Council , leader_name1 = , leader_title2 = , leader_name2 = Walter Thurnherr , legislature = Fe ...
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Gletsch
Gletsch () is a hamlet in the German-speaking half of the canton of Valais, located in the upper Rhone valley, called Obergoms ('Upper Goms'), , southeast below the Rhone Glacier's mouth and itself the headwaters of the Rhône. It is called Gletsch (some short of ''Gletscher'', the German term for glacier), since the first building was the predecessor of the ''Hôtel Glacier du Rhône'' (c. 1860) built more or less just next to the glacier's mouth in 1830. It belongs to the municipality of Obergoms. Gletsch lies at the crossroads of the Grimsel Pass (leading to the Bernese Oberland) and the Furka Pass (leading to Andermatt, the central Swiss transport cross, and eventually either to Central Switzerland, or the Grisonian Surselva, or the Ticino). The Gletsch railway station is operated by the Furka Cogwheel Steam Railway. References *Swisstopo Swisstopo is the official name for the Swiss Federal Office of Topography (in German language, German: ''Bundesamt fü ...
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Rhône
The Rhône ( , ; wae, Rotten ; frp, Rôno ; oc, Ròse ) is a major river in France and Switzerland, rising in the Alps and flowing west and south through Lake Geneva and southeastern France before discharging into the Mediterranean Sea. At Arles, near its mouth, the river divides into the Great Rhône (french: le Grand Rhône, links=no) and the Little Rhône (). The resulting delta forms the Camargue region. The river's source is the Rhône Glacier, at the east edge of the Swiss canton of Valais. The glacier is part of the Saint-Gotthard Massif, which gives rise to three other major rivers: the Reuss, Rhine and Ticino. The Rhône is, with the Po and Nile, one of the three Mediterranean rivers with the largest water discharge. Etymology The name ''Rhône'' continues the Latin name (Greek ) in Greco-Roman geography. The Gaulish name of the river was or (from a PIE root *''ret-'' "to run, roll" frequently found in river names). Names in other languages include german: R ...
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Lake Geneva
, image = Lake Geneva by Sentinel-2.jpg , caption = Satellite image , image_bathymetry = , caption_bathymetry = , location = Switzerland, France , coords = , lake_type = Glacial lake , inflow = Rhône, Dranse , outflow = Rhône , catchment = , basin_countries = Switzerland, France , length = , width = , area = , depth = , max-depth = , volume = , residence_time = 11.4 years , shore = , elevation = , islands = Île de Peilz, Château de Chillon, Île de Salagnon, Île de la Harpe, Île Rousseau, Île de Choisi , cities = Geneva (CH), Lausanne (CH), Évian (F), Montreux (CH), Thonon (F), Vevey (CH) (''see list'') , pushpin_map=France Rhône-Alpes#Canton of Vaud#Canton of Valais#Switzerland#France#Alps , pushpin_label_position= bottom , e ...
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Surface Runoff
Surface runoff (also known as overland flow) is the flow of water occurring on the ground surface when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is saturated by water to its full capacity, and the rain arrives more quickly than the soil can absorb it. Surface runoff often occurs because impervious areas (such as roofs and pavement) do not allow water to soak into the ground. Furthermore, runoff can occur either through natural or man-made processes. Surface runoff is a major component of the water cycle. It is the primary agent of soil erosion by water. The land area producing runoff that drains to a common point is called a drainage basin. Runoff that occurs on the ground surface before reaching a channel can be a nonpoint source of pollution, as it can carry man-made contaminants or natural forms of pollution (such as rotting leaves). Man-made contaminants in runoff i ...
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Solar Insolation
Solar irradiance is the power per unit area (surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument. Solar irradiance is measured in watts per square metre (W/m2) in SI units. Solar irradiance is often integrated over a given time period in order to report the radiant energy emitted into the surrounding environment (joule per square metre, J/m2) during that time period. This integrated solar irradiance is called solar irradiation, solar exposure, solar insolation, or insolation. Irradiance may be measured in space or at the Earth's surface after atmospheric absorption and scattering. Irradiance in space is a function of distance from the Sun, the solar cycle, and cross-cycle changes.Michael Boxwell, ''Solar Electricity Handbook: A Simple, Practical Guide to Solar Energy'' (2012), p. 41–42. Irradiance on the Earth's surface additionally depends on the tilt of the measuring surface, the height ...
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Altitude
Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometry, geographical survey, sport, or atmospheric pressure). Although the term ''altitude'' is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage. Vertical distance measurements in the "down" direction are commonly referred to as depth. In aviation In aviation, the term altitude can have several meanings, and is always qualified by explicitly adding a modifier (e.g. "true altitude"), or implicitly through the context of the communication. Parties exchanging altitude information must be clear which definition is being used. Aviation altitude is measured using either mean sea level (MSL) or local ground level (above ground level, or ...
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Albedo
Albedo (; ) is the measure of the diffuse reflection of sunlight, solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation. Surface albedo is defined as the ratio of Radiosity (radiometry), radiosity ''J''e to the irradiance ''E''e (flux per unit area) received by a surface. The proportion reflected is not only determined by properties of the surface itself, but also by the spectral and angular distribution of solar radiation reaching the Earth's surface. These factors vary with atmospheric composition, geographic location, and time (see position of the Sun). While bi-hemispherical reflectance is calculated for a single angle of incidence (i.e., for a given position of the Sun), albedo is the directional integration of reflectance over all solar angles in a given period. The temporal resolution may range from seconds (as ob ...
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