منابع مشابه
Atmospheric Impact of the 1783 - 1784 Laki
3 of basalt, and released an estimated 122 Tg of SO 2. The impact of this release upon the chemical composition of the atmosphere has been simulated with a global 3-D chemical-transport model. The model suggests that the SO 2 generated a sulphate aerosol veil over much of the northern hemisphere during the summer of 1783, in agreement with observations of a widespread`dry fog'. In the model, ov...
متن کاملAtmospheric impact of the 1783 Laki eruption
Atmospheric impact of the 1783–1784 Laki eruption: Part I Chemistry modelling D. S. Stevenson, C. E. Johnson, E. J. Highwood, V. Gauci, W. J. Collins, and R. G. Derwent Institute for Meteorology, University of Edinburgh, Edinburgh, UK Met Office, Bracknell, UK Department of Meteorology, University of Reading, UK Department of Earth Sciences, The Open University, UK Received: 29 November 2002 – ...
متن کاملFlow through Packed Beds and Fluidized Beds
Chemical engineering operations commonly involve the use of packed and fluidized beds. These are devices in which a large surface area for contact between a liquid and a gas (absorption, distillation) or a solid and a gas or liquid (adsorption, catalysis) is obtained for achieving rapid mass and heat transfer, and particularly in the case of fluidized beds, catalytic chemical reactions. You wil...
متن کاملClimatic impact of the 1783--1784 Laki eruption
Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract The long 1783–1784 eruption of Laki, in southern Iceland, was one of the first eruptions to have been linked to an observed climate anomaly, having been held responsible for cold temperatures over much of the Northern Hemisphere in the period 1783–1785. R...
متن کاملA generalized correlation for equilibrium of forces in liquid–solid fluidized beds
Following a critical publication review on the expansion of fluidized bed with the fluid velocity, the well-known Richardson–Zaki equation is applied to develop a more accurate relationship linking the apparent drag force Fd, the effective gravitational force Fg and the voidage of fluidized beds under intermediate regime. A correcting constant a in the relationship is a function of Archimedes n...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1940
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800071326