In the Dines tube anemograph, the wind pressure acts upon the opening of a tube arranged as a vane to face in the direction of the wind. |
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At stations with an anemograph, the mean speed is for a period of 10 minutes ending at the hour of observation. |
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Since the anemograph was installed in 1982 gusts of 100 kt or more have been recorded on only two occasions on Fair Isle. |
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We review a method for the directional analysis of extreme winds, proposed in this journal in 1983, and extend it to include correction of anemograph exposure by direction. |
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Two days later, Madigan's anemograph recorded winds of 100 miles per hour for the first time. |
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The base wind speed was derived from observations of extremes at 50 anemograph sites, assuming that the exposure of the each site was uniform by direction. |
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This system consists of two model tunnels, a fan, a CO storage tank, a pressure maintaining valve, a flow meter, an anemograph, a CO concentration detector, and so on. |
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