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Table 3 Horizontal parameters and duration of stationary waves detected in OH images

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

Date Wavelength [km] Direction of wavefront Duration [h]
2 June 2018  ~ 160 Northwest–Southeast 2
6 January 2019  ~ 50 North–South 3
1 February 2019  ~ 140 Northwest–Southeast 2
15 December 2019  ~ 75 West–East 2