RIP CURRENT OBSERVATION WITH X-BAND RADAR

Proceedings of the International Conference on Coastal Engineering

Satoshi Takewaka²  Taishi Yamakawa¹ 

[1] University of Tsukuba

关键词: rip current;    field observation;    X-band radar;    occurrence of rip current;   

DOI  :  10.9753/icce.v32.currents.43

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

X-band radar measurements were conducted at the research pier HORS, of the Port and Airport Research Institute, located in Hasaki, Japan. Ensembles of original radar images over 17 minutes were processed to time-averaged radar images every hour, which were analyzed to estimate the intertidal morphology and occurrence of rip currents. Several streaks extending in the cross shore direction appear in the averaged images which resemble to a neck and head of a rip current captured often in aerial photos or video imageries. The natures of these characteristic patterns in the time-averaged image are investigated through comparisons between optical images, floater release experiment and statistic analyses on sea conditions.

【 授权许可】

Unknown