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Felix Maria Von Exner-Ewarten
Felix Maria von Exner-Ewarten (23 August 1876 in Vienna – 7 February 1930, Vienna) was an Austrian meteorologist and geophysicist Geophysics () is a subject of natural science concerned with the physical processes and properties of Earth and its surrounding space environment, and the use of quantitative methods for their analysis. Geophysicists conduct investigations acros .... His son Christof Exner (1915–2007) was a professor of geology in Vienna. Literature * External links * Austrian meteorologists Austrian physicists 1876 births 1930 deaths {{meteorology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. Its larger metropolitan area has a population of nearly 2.9 million, representing nearly one-third of the country's population. Vienna is the Culture of Austria, cultural, Economy of Austria, economic, and Politics of Austria, political center of the country, the List of cities in the European Union by population within city limits, fifth-largest city by population in the European Union, and the most-populous of the List of cities and towns on the river Danube, cities on the river Danube. The city lies on the eastern edge of the Vienna Woods (''Wienerwald''), the northeasternmost foothills of the Alps, that separate Vienna from the more western parts of Austria, at the transition to the Pannonian Basin. It sits on the Danube, and is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria-Hungary
Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe#Before World War I, Central Europe between 1867 and 1918. A military and diplomatic alliance, it consisted of two sovereign states with a single monarch who was titled both the Emperor of Austria and the King of Hungary. Austria-Hungary constituted the last phase in the constitutional evolution of the Habsburg monarchy: it was formed with the Austro-Hungarian Compromise of 1867 in the aftermath of the Austro-Prussian War, following wars of independence by Hungary in opposition to Habsburg rule. It was dissolved shortly after Dissolution of Austria-Hungary#Dissolution, Hungary terminated the union with Austria in 1918 at the end of World War 1. One of Europe's major powers, Austria-Hungary was geographically the second-largest country in Europe (after Russian Empire, Russia) and the third-most populous (afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Of Austria (1919–1934)
The First Austrian Republic (), officially the Republic of Austria, was created after the signing of the Treaty of Saint-Germain-en-Laye on 10 September 1919—the settlement after the end of World War I which ended the Habsburg rump state of Republic of German-Austria—and ended with the establishment of the authoritarian Federal State of Austria based upon a dictatorship of Engelbert Dollfuss and the Fatherland Front in 1934. The Republic's constitution was enacted on 1 October 1920 and amended on 7 December 1929. The republican period was increasingly marked by violent strife between those with left-wing and right-wing views, leading to the July Revolt of 1927 and the Austrian Civil War of 1934. Foundation In September 1919, the rump state of German-Austria—now effectively reduced to the Alpine and Danubian crownlands of the Austrian Empire—was given reduced borders by the Treaty of Saint Germain, which ceded German-populated regions in Sudetenland to Czechoslovaki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorology
Meteorology is the scientific study of the Earth's atmosphere and short-term atmospheric phenomena (i.e. weather), with a focus on weather forecasting. It has applications in the military, aviation, energy production, transport, agriculture, construction, weather warnings and disaster management. Along with climatology, atmospheric physics and atmospheric chemistry, meteorology forms the broader field of the atmospheric sciences. The interactions between Earth's atmosphere and its oceans (notably El Niño and La Niña) are studied in the interdisciplinary field of hydrometeorology. Other interdisciplinary areas include biometeorology, space weather and planetary meteorology. Marine weather forecasting relates meteorology to maritime and coastal safety, based on atmospheric interactions with large bodies of water. Meteorologists study meteorological phenomena driven by solar radiation, Earth's rotation, ocean currents and other factors. These include everyday ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exner Equation
The Exner equation describes conservation of mass between sediment in the bed of a channel and sediment that is being transported. It states that bed elevation increases (the bed aggrades) proportionally to the amount of sediment that drops out of transport, and conversely decreases (the bed degrades) proportionally to the amount of sediment that becomes entrained by the flow. It was developed by the Austrian meteorologist and sedimentologist Felix Maria Exner, from whom it derives its name. It is typically applied to sediment in a fluvial system such as a river. The Exner equation states that the change in bed elevation, \eta, over time, t, is equal to one over the grain packing density, \varepsilon_o, times the negative divergence of sediment flux, \mathbf, : \frac = -\frac\nabla\cdot\mathbf Note that \varepsilon_o can also be expressed as (1-\lambda_p), where \lambda_p equals the bed porosity. Good values of \varepsilon_o for natural systems range from 0.45 to 0.75.Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exner Function
The Exner function is an important parameter in atmospheric modeling. The Exner function can be viewed as non-dimensionalized pressure and can be defined as: : \Pi = \left( \frac \right)^ = \frac where p_0 is a standard reference surface pressure, usually taken as 1000 hPa; R_d is the specific gas constant for dry air; c_p is the specific heat capacity of dry air at constant pressure; T is the absolute temperature; and \theta is the potential temperature. It is named after Felix Maria von Exner-Ewarten. References *Pielke, Roger A. ''Mesoscale Meteorological Modeling.'' Orlando: Academic Press, Inc., 1984. *U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service. ''National Weather Service Handbook No. 1 - Facsimile Products.'' Washington, DC: Department of Commerce, 1979. See also *Barometric formula *Climate model *Euler equations *Fluid dynamics *General circulation model *Numerical weather prediction *Primitive equations The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria
Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Austria, most populous city and state. Austria is bordered by Germany to the northwest, the Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. The country occupies an area of and has Austrians, a population of around 9 million. The area of today's Austria has been inhabited since at least the Paleolithic, Paleolithic period. Around 400 BC, it was inhabited by the Celts and then annexed by the Roman Empire, Romans in the late 1st century BC. Christianization in the region began in the 4th and 5th centuries, during the late Western Roman Empire, Roman period, followed by the arrival of numerous Germanic tribes during the Migration Period. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorologist
A meteorologist is a scientist who studies and works in the field of meteorology aiming to understand or predict Earth's atmosphere of Earth, atmospheric phenomena including the weather. Those who study meteorological phenomena are meteorologists in research, while those using mathematical models and knowledge to prepare daily weather forecasts are called ''weather forecasters'' or ''operational meteorologists''. Meteorologists work in Government agency, government agencies, private consulting and research services, industrial enterprises, utilities, radio and television stations, and in education. They are not to be confused with weather presenters, who present the weather forecast in the media and range in training from journalists having just minimal training in meteorology to full-fledged meteorologists. Description Meteorologists study the Earth's atmosphere and its interactions with the Earth's surface, the oceans and the biosphere. Their knowledge of applied mathematics and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geophysicist
Geophysics () is a subject of natural science concerned with the physical processes and properties of Earth and its surrounding space environment, and the use of quantitative methods for their analysis. Geophysicists conduct investigations across a wide range of scientific disciplines. The term ''geophysics'' classically refers to solid earth applications: Earth's shape; its gravitational, magnetic fields, and electromagnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations and pure scientists use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial physics; and analogous problems associated with the Moon and other planets.Gutenberg, B., 1929, Lehrbuch der Geophysik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christof Exner
Christof is a masculine given name. It is a German variant of Christopher. Notable people with the name include: * Christof Babatz (born 1974), German former professional footballer * Christof Duffner (born 1971), German former ski jumper * Christof Ebert (born 1964), German computer scientist and entrepreneur * Christof Heyns (1959–2021), South African academic *Christof Innerhofer (born 1984), Italian alpine ski racer *Christof Koch (born 1956), American neuroscientist *Christof Lauer (born 1953), German saxophonist * Christof Lindenmayer (born 1977), American former soccer player * Christof Marselis (1670s–1731), Polish-Dutch architect * Christof Mauch (born 1960), German historian * Christof May (1973–2022), German Catholic theologian *Christof Migone, Swiss-born experimental sound artist and writer *Christof Perick (born Christof Prick, 1946), German conductor * Christof Plümacher or Christof Pluemacher (born 1963), German photographer * Christof Putzel (born 197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrian Meteorologists
Austrian may refer to: * Austrians, someone from Austria or of Austrian descent ** Someone who is considered an Austrian citizen * Austrian German dialect * Something associated with the country Austria, for example: ** Austria-Hungary ** Austrian Airlines (AUA) ** Austrian cuisine ** Austrian Empire ** Austrian monarchy ** Austrian German (language/dialects) ** Austrian literature ** Austrian nationality law ** Austrian Service Abroad ** Music of Austria **Austrian School of Economics * Economists of the Austrian school of economic thought * The Austrian Attack variation of the Pirc Defence chess opening. See also * * * Austria (other) * Australian (other) * L'Autrichienne (other) is the feminine form of the French word , meaning "The Austrian". It may refer to: *A derogatory nickname for Queen Marie Antoinette of France ** ''L'Autrichienne'' (film), a 1990 French film on Marie Antoinette with Ute Lemper * ''L'Autrichienn ... {{disambig Lang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
