Seasonal and Geographical Variations in the Quantified Relationship Between Significant Wave Heights and Microseisms: An Example From Taiwan

Jing Yi Lin, Chuen Teyr Terng, Chien Chih Chen, Chung Hsiang Mu

研究成果: 書貢獻/報告類型篇章同行評審

摘要

Investigating significant wave heights (SWHs) predicted from microseisms can complement climate observations and provide information about the interaction of sea storms with coastal environments. By comparing the spectrogram calculated from the data of inland seismic stations and SWHs recorded by buoys around Taiwan, we discern seasonal and geographical differences while estimating wave height with an empirical law. A monthly analysis based on nine seismic stations and buoy pairs shows an approximately linear relationship between the square root of the seismic energy and the wave heights during summer for most stations and a nonlinear relationship in winter. The high correlation coefficient of over 0.8 between the seismic energy and SWHs in winter indicated that direct effects from weather conditions are the primary factor influencing microseism behavior. Although the station in southernmost Taiwan revealed microseism energy distribution similarly to that of other stations, the wave-height fluctuation was distinct, showing slight variations in winter. This observation could relate to the shielding effect of the land topography, which prevents infiltration by strong winds and decreases the ramifications of wave height. This work assesses the possibility of estimating significant sea wave heights around Taiwan and the importance of seasonal and geographical variation while selecting parameters.

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主出版物標題Noisy Oceans
主出版物子標題Monitoring Seismic and Acoustic Signals in the Marine Environment
發行者wiley
頁面31-42
頁數12
ISBN(電子)9781119750925
ISBN(列印)9781119750895
DOIs
出版狀態已出版 - 1 1月 2023

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