Fig_wind_flux (IMAGE)
Caption
How trees reacted to wind during a category-5 tropical cyclone (super typhoon Trami) in 2018. The wind and tree stem angle data describe that tree damage occurred from 1:10 to 1:20 on 1 October 2018 (rapidly changing wind speeds with strong sweep shown as the negative momentum flux u’w’). Before 1:10, all trees were swaying in the similar manner; just after 1:10, the trees in the control plot helped each other by frequently crushing their crowns, whereas the trees in the thinned plot confronted strong wind turbulent individually; when the winds became less strong, the trees in the control plot returned to the rest (original) positions, whereas the undamaged trees without any supports (in the thinned plot) remained at the leaned positions (never back to the rest positions).
Credit
Kana Kamimura, Shinshu University
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License
Original content