The Institute of Low Temperature Science, Hokkaido University
The Institute of Low Temperature Science, Hokkaido University
Water Research Institute, Nagoya University
National Institute of Polar Research
抄録(英)
Acoustic sounding was used in observing a katabatic wind layer at the lowest few hundred meters over Mizuho Station (70°42′S, 44°20′E, 2230m above sea level), East Antarctica. Some examples of acoustic echo return showed the structure of surface inversions in connection with a katabatic wind and the behavior of breaking waves, e.g.a "herringbone" type structure described by EMMANUEL et al. (J. Atmos. Sci., 29,886,1972) as an unstable wave. Observations disclosed that wave-like motion exists in a layer between the heights of 100 and 300m and it has a shorter period than the calculated value from the Brunt-Vaisala frequency. This discrepancy was explained by a simple two-dimensional wave equation, considering the presence of mean atmospheric flow.
雑誌書誌ID
AA00733561
雑誌名
Memoirs of National Institute of Polar Research. Special issue
Observation of an atmospheric boundary layer at Mizuho Station using an acoustic sounder
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KJ00000012130
(1.9MB)
概要
