Results 221 to 230 of about 1,109 (265)

Ice detector estimation of atmospheric icing on a cable

Cold Regions Science and Technology, 1993
Abstract Atmospheric icing is an important cause of damages to structures and power transmission lines in northern Quebec. An icing test line was set up on Mt. Valin (alt. 902 m) near Chicoutimi to measure icing loads on the type of stranded cables used on transmission lines.
Pierre McComber, Jacques Druez, Jean Laflamme   +2 more
openaire   +1 more source

Water and Ice in the Atmosphere

The Journal of the Royal Aeronautical Society, 1959
Over the past years many questions which come under the broad heading of cloud physics have been put to the Meteorological Office by aircraft firms and others, questions on the water and ice crystal contents of clouds and the size distribution of raindrops are examples.
openaire   +1 more source

Ice nucleation in the atmosphere

Advances in Colloid and Interface Science, 1979
IV. Introduction A. State of useful knowledge B. List of symbols C. Basic theory and conventions Atmospheric ice nuclei A. Origin B. Mode of action C. Detection and measurement Some approaches to a more basic understanding A. Epitaxy 6. Adsorption C. Entropy effects D.
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Atmospheric ice nuclei

Zeitschrift für angewandte Mathematik und Physik ZAMP, 1963
L'auteur examine les connaissances actuelles des noyaux glacogenes naturels et decrit brievement les methodes utilisees pour mesurer des concentrations a des temperatures variables, les resultats obtenus et la repartition geographique des noyaux glacogenes.
openaire   +1 more source

The Ice Core Record of Atmospheric Methane

2000
The global evolution of atmospheric CH4 has been documented by sporadic direct measurements in the atmosphere during the 1960s and 1970s and by systematic survey only since 1979. The data from this time up to 1983 indicate an increasing trend at a rate of about 1% per year (Rasmussen and Khalil, 1986; Steele et al., 1987; Blake and Rowland, 1988).
Chappellaz, Jérôme, Raynaud, D., Blunier, T., Stauffer, B.   +3 more
openaire   +3 more sources

Atmospheric Ice Crystals

1980
Classifications of naturally occurring atmospheric ice crystals are presented, and their formation and occurrence are discussed.
openaire   +1 more source

Compressive strength of atmospheric ice

Cold Regions Science and Technology, 2007
Abstract Accumulation of atmospheric ice on power transmission lines is a source of tremendous damage to power networks. Despite the longstanding problem of atmospheric icing on network equipment, the mechanical properties and behavior of this type of ice under various loading conditions are still unclear.
Kermani, M., Farzaneh, M., Gagnon, R. E.
openaire   +1 more source

Mechanical properties of atmospheric ice

Cold Regions Science and Technology, 1986
Abstract Mechanical properties of atmospheric ice obtained in a wind tunnel are measured. The ice is grown from supercooled droplets on a rotating aluminium cylinder of 31.5-mm diameter and 6.5-μm rugosity. Compressive strength is measured at two speeds of deformation (0.76 and 26 mm/min) for glaze and rime samples, as a function of air temperature ...
J. Druez, D.D. Nguyen, Y. Lavoie
openaire   +1 more source

Microphysical modeling of methane ice clouds in the atmospheres of the Ice Giants.

Voyager 2 radio occultation measurements of Uranus and Neptune revealed a layer approximately 2-4 km thick near 1.2 and 1.6 bars, respectively, wherein the atmospheric refractivity exhibited a slope variation (1, 2). These findings were interpreted as indicating a region where methane gas was undergoing condensation, forming an ice cloud centered ...
Daniel Toledo, Pascal Rannou, Patrick Irwin, Bruno de Batz de Trenquelléon, Victor Apestigue, Michael Roman, Ignacio Arruego, Margarita Yela   +7 more
openaire   +2 more sources

Future projections of atmospheric icing in Norway

Cold Regions Science and Technology, 2022
Emilie C. Iversen, Bjørn Egil Nygaard, Øivind Hodnebrog, Maria Sand, Kristian Ingvaldsen   +4 more
openaire   +1 more source