학술논문

FUTURE CHANGES IN WINTER EXPLOSIVE CYCLONES PASSING OVER THE JAPAN-SEA AND SEA OF OKHOTSK AND THEIR IMPACT ON MAXIMUM STORM-SURGE LEVELS / 日本海-オホーツク海経路の冬季爆弾低気圧の将来変化と最大高潮水位への影響
Document Type
Journal Article
Source
土木学会論文集 / Japanese Journal of JSCE. 2023, 79(17):23-17038
Subject
Storm surge
cyclone trajectory
d4PDF
statistical risk analysis
winter cyclone
Language
Japanese
ISSN
2436-6021
Abstract
Storm surge disaster caused by explosive cyclones frequently occurred around Hokkaido in the winter season. Future changes in winter explosive cyclones and storm surge due to climate change needs to be considered. In this study, the explosive cyclones classified by genesis and maximum development location into three trajectory types using d4PDF. Statistics compared the frequency of passage, migration speed, central pressure, development rate, and maximum wind velocity both in the past and in the future. In addition, water levels and flow fields calculated using advanced circulation model for oceanic. The calculation results evaluate the impact of changes in the characteristics of the meteorological field on storm surge levels. The comparison results show that in the future climate, the passing frequency increased from the Sea of Japan to the Sea of Okhotsk. The maximum magnitude low-pressure intensity could intensify. The storm surge calculation results show areas that could be dangerous in the future.

Online Access