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- Title
Characteristics of Swell-like Waves in the East Coast of Korea Using Atmospheric and Wave Hindcast Data.
- Authors
Jeong, Sang-Hun; Heo, Ki-Young; Son, Jun-Hyeok; Jo, Young-Heon; Choi, Jin-Yong; Kwon, Jae-Il
- Abstract
The long-term trend of swell-like waves invading the east coast of Korea was identified by using observations and hindcast data from 1979 to 2016. We defined a swell-like wave as a wave with a height of 2 m and a peak period of 10 s on the basis of a literature review of human casualties and property damage in the region. In total, 179 swell-like wave cases were detected from 1979 to 2016, with 132 cases caused by extratropical cyclones (ETCs). The track density analysis indicated that the ETCs were mainly generated on the east coast of China, over the East/Japan Sea, and over the Kuroshio-Oyashio extension region and then moved northeast. This reflects the prevailing wind direction, which was the most significant factor in generating the swell-like waves. The number of swell-like waves has been significantly increasing since the 2000s. This increasing trend of swell-like waves is linked with the synoptic eddy activity with a correlation of 0.53. They were associated with the reversed meridional gradient of surface air temperature and the consequent negative vertical wind shear anomaly near 40° N.
- Subjects
SOUTH Korea; ATLANTIC Coast (U.S.); ATMOSPHERIC waves; VERTICAL wind shear; CYCLONES; ATMOSPHERIC temperature; PROPERTY damage
- Publication
Atmosphere, 2022, Vol 13, Issue 2, p286
- ISSN
2073-4433
- Publication type
Article
- DOI
10.3390/atmos13020286