降・積雪の測定機器についてー降雪検知機および自動積雪深さ記録計

概要

論文の詳細を見る
This paper proposes three measuring apparatuses, which provide a useful piece of information on snowfall and snowcover for reducing snow damage and for utilizing snow.　The umbrella-like snowfall detector, which utilizes resistance change, indicates the instant when snowfall started or stopped and can be used as an element of a snow melting system. According to our field test, it is thought to be usable in practical applications.　The composite snowfall detector, which detects snowfall by counting the number of the drops of the water whhich is produced by heating snowfall, is found to be capable of measuring snowfall intensity over a wide range.　The automatic snowcover depth recorder can measure a depth of snow without touching the snow surface. This device employs the reflected light from the surface which is illuminated by a light source operated by an a.c. supply. In order to eliminate light signals other than from the light source, only the reflected light of a.c. component is utilized. Field experiments for a few months provide a prospect of practical use.
山形大学の論文
1978-02-20