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- Unter atmosphärischer Deposition werden die Stoffflüsse aus der Erdatmosphäre auf die Erdoberfläche verstanden, das heißt der Austrag und die Ablagerung von gelösten, partikelgebundenen oder gasförmigen Luftinhaltsstoffen auf Oberflächen (Akzeptoren) biotischer oder abiotischer Systeme. Biotische Akzeptoren sind die oberirdischen Sprossteile von Pflanzen, insbesondere die Blätter und Nadeln. Abiotische Akzeptoren können der Boden, Oberflächengewässer, Schneedecken oder Bauwerke (Dächer, Straßen u. a.) sein. (de)
- In the physics of aerosols, deposition is the process by which aerosol particles collect or deposit themselves on solid surfaces, decreasing the concentration of the particles in the air. It can be divided into two sub-processes: dry and wet deposition. The rate of deposition, or the deposition velocity, is slowest for particles of an intermediate size. Mechanisms for deposition are most effective for either very small or very large particles. Very large particles will settle out quickly through sedimentation (settling) or impaction processes, while Brownian diffusion has the greatest influence on small particles. This is because very small particles coagulate in few hours until they achieve a diameter of 0.5 micrometres. At this size they no longer coagulate. This has a great influence in the amount of PM-2.5 present in the air. Deposition velocity is defined from F = vc, where F is flux density, v is deposition velocity and c is concentration. In gravitational deposition, this velocity is the settling velocity due to the gravity-induced drag. Often studied is whether or not a certain particle will impact with a certain obstacle. This can be predicted with the Stokes number Stk = S / d, where S is stopping distance (which depends on particle size, velocity and drag forces), and d is characteristic size (often the diameter of the obstacle). If the value of Stk is less than 1, the particle will not collide with that obstacle. However, if the value of Stk is greater than 1, it will. Deposition due to Brownian motion obeys both Fick's first and second laws. The resulting deposition flux is defined as , where J is deposition flux, n is the initial number density, D is the diffusion constant and t is time. This can be integrated to determine the concentration at each moment of time. (en)
- Depozycja – proces przemieszczania i osadzania luźnych materiałów. W atmosferze dotyczy przemieszczania i osadzania na powierzchni ziemi składników zanieczyszczeń atmosferycznych. Wyróżnia się dwa rodzaje depozycji zanieczyszczeń atmosferycznych:
* depozycja mokra - przemieszczanie się zanieczyszczeń wraz z opadem atmosferycznym;
* depozycja sucha - opadanie na ziemię związków siarki i azotu zawartych w atmosferze w postaci gazowych związków chemicznych. (pl)
- 在气溶胶物理学中，沉降是指气溶胶粒子聚集或沉积在固体表面上，从而降低空气中粒子浓度的过程。沉降時依據是否有降水可以分为两類，分別為干沉降和湿沉降。如果大气中的气溶胶粒子是被雨、雪、露、霜等降水物质帶到地面上，那麼這個過程則被稱為湿沉降，若沒有受到降水作用而落到地面則為乾沉降。 (zh)
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- Unter atmosphärischer Deposition werden die Stoffflüsse aus der Erdatmosphäre auf die Erdoberfläche verstanden, das heißt der Austrag und die Ablagerung von gelösten, partikelgebundenen oder gasförmigen Luftinhaltsstoffen auf Oberflächen (Akzeptoren) biotischer oder abiotischer Systeme. Biotische Akzeptoren sind die oberirdischen Sprossteile von Pflanzen, insbesondere die Blätter und Nadeln. Abiotische Akzeptoren können der Boden, Oberflächengewässer, Schneedecken oder Bauwerke (Dächer, Straßen u. a.) sein. (de)
- Depozycja – proces przemieszczania i osadzania luźnych materiałów. W atmosferze dotyczy przemieszczania i osadzania na powierzchni ziemi składników zanieczyszczeń atmosferycznych. Wyróżnia się dwa rodzaje depozycji zanieczyszczeń atmosferycznych:
* depozycja mokra - przemieszczanie się zanieczyszczeń wraz z opadem atmosferycznym;
* depozycja sucha - opadanie na ziemię związków siarki i azotu zawartych w atmosferze w postaci gazowych związków chemicznych. (pl)
- 在气溶胶物理学中，沉降是指气溶胶粒子聚集或沉积在固体表面上，从而降低空气中粒子浓度的过程。沉降時依據是否有降水可以分为两類，分別為干沉降和湿沉降。如果大气中的气溶胶粒子是被雨、雪、露、霜等降水物质帶到地面上，那麼這個過程則被稱為湿沉降，若沒有受到降水作用而落到地面則為乾沉降。 (zh)
- In the physics of aerosols, deposition is the process by which aerosol particles collect or deposit themselves on solid surfaces, decreasing the concentration of the particles in the air. It can be divided into two sub-processes: dry and wet deposition. The rate of deposition, or the deposition velocity, is slowest for particles of an intermediate size. Mechanisms for deposition are most effective for either very small or very large particles. Very large particles will settle out quickly through sedimentation (settling) or impaction processes, while Brownian diffusion has the greatest influence on small particles. This is because very small particles coagulate in few hours until they achieve a diameter of 0.5 micrometres. At this size they no longer coagulate. This has a great influence in (en)
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- Deposition (de)
- Deposition (aerosol physics) (en)
- Depozycja (geografia) (pl)
- 沉降 (氣溶膠物理學) (zh)
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