RAINFALL OBSERVATION IN THE COASTAL AREA WITH OPTICAL DISDROMETERS IN THE SUMMER OF 2013
-
- OKACHI Hiroki
- 北海道大学大学院工学院
-
- YAMADA Tomohito J.
- 北海道大学大学院工学院
-
- WATANABE Yasunori
- 北海道大学大学院工学院
-
- SARUWATARI Ayumi
- 北海道大学大学院工学研究院
-
- OHTSUKA Junichi
- 国立研究開発法人土木研究所寒地土木研究所
-
- MORI Nobuhito
- 北海道大学大学院工学院
-
- BABA Yasuyuki
- 北海道大学大学院工学院
-
- KUBO Teruhiro
- 京都大学防災研究所
-
- NINOMIYA Junichi
- 金沢大学理工学研究域
-
- UCHIYAMA Yusuke
- 神戸大学大学院工学研究科
-
- MIZUTANI Hideaki
- ハイドロ総合技術研究所
Bibliographic Information
- Other Title
-
- ディスドロメータを用いた海上における2013年夏季の降雨観測
- ディスドロメータ オ モチイタ カイジョウ ニ オケル 2013ネン カキ ノ コウウ カンソク
Search this article
Abstract
<p> Rainfall observation has been widely performed with ground rain gauges and radars. Radar can obtain spacial distribution of rainfall. As the drop size distribution is assumed, rainfall intensity is estimated using the Z-R relationship and the KDP-R relationship. However, drop size distribution varies depending on rainfall type and area. In this study, two optical disdrometers are installed at two different heights on an Observational Tower of the Kyoto University Disaster Prevention Research Institute at Wakayama prefecture to have a rainfall observation on the sea in the summer of 2013. The number of droplets with a diameter less than 1mm obtained a feature that increases with the wind speed. This is considered to be sea spray generated from the sea surface. In this case, it is suggested in the observation of rainfall on the sea that the variation of drop size distribution fluctuates according to the wind speed. Furthermore, it is necessary to consider the mixture of droplets.</p>
Journal
-
- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
-
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 75 (5), I_41-I_46, 2019
Japan Society of Civil Engineers