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Fig. 18 | Earth, Planets and Space

Fig. 18

From: Relationship between topography, tropospheric wind, and frequency of mountain waves in the upper mesosphere over the Kanto area of Japan

Fig. 18

Method for estimating elevation data. a “Elevation tile” provided by the Geospatial Information Authority of Japan, b elevation data calculated from the “elevation tile,” c mountain ridgeline extracted from b using the method of Iwahashi (1994), d enlarged view of the yellow inset in c and definition of the direction of the mountain ridgeline θʹ

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