INVESTIGATION ON ESTIMATION METHOD OF JEWELRY ICE APPEARANCE PERIOD ON THE OTSU COAST IN HOKKAIDO

Abstract

 "jewelry ice", which is appeared in winter on Otsu Coast near the Tokachi River mouth in Hokkaido, has been attracting attention as a new tourist resource. On the other hand, the period of the appearance of "jewelry ice" is not fully clear. The objective of this study is to develop a method for estimating the period of appearance of jewelry ice. Image analysis was performed using images taken by a fixed-point camera to calculate the area of deposition. The appearance phenomena are classified into five categories: formation, destruction, transport, deposition, and melting. The validity of the calculation results was confirmed by comparing the area of jewelry ice deposited by image analysis and the amount deposited by calculated values.