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Volume 29 (1967)
- Issue 6 Pages 167-
- Issue 5 Pages 131-
- Issue 4 Pages 100-
- Issue 3 Pages 65-
- Issue 1 Pages 3-
Volume 29, Issue 4
Displaying 1-2 of 2 articles from this issue
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[in Japanese]1967 Volume 29 Issue 4 Pages 100-106
Published: May 30, 1967
Released on J-STAGE: July 23, 2009
JOURNAL FREE ACCESSDownload PDF (4876K) -
Tokuji Kashiyama1967 Volume 29 Issue 4 Pages 107-109
Published: May 30, 1967
Released on J-STAGE: July 23, 2009
JOURNAL FREE ACCESSThe aspect of avalanche injury of forest trees is similar to that of wind damage. Regarding the avalanche as a kind of fluid composed of snow-air mixture, the force of avalanche exerting on a standing tree is computed by the same way as the case of wind pressure. From the view-point of forest damage, surface avalanches keeping the velocities of 30 m/s and over or ground avalanches of 15 m/s and over are estimated to be equivalent to the stormwinds blowing at the velocities of over 40 m/s.View full abstractDownload PDF (444K)
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