A STUDY OF EXTREME VALUE ANALYSIS ON TYPHOON WAVE
No. 34 (2014), Waves
No. 34 (2014)

A STUDY OF EXTREME VALUE ANALYSIS ON TYPHOON WAVE

Waves
https://doi.org/10.9753/icce.v34.waves.38
Published 2014-10-28
Tai-Wen Hsu
Department of Harbor and River Engineering, National Taiwan Ocean University Department of Hydraulic and Ocean Engineering, National Cheng Kung University
Muhajir Usman
Department of Hydraulic and Ocean Engineering, National Cheng Kung University
Yuan-Jyh Lan
Research Center for Ocean Energy and Strategies, National Taiwan Ocean University
Youe-Ping Lee
Water Resources Agency, Ministry of Economic Affairs
ICCE 2014 Cover Image
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Keywords

waves
typhoon events
wave height
extreme value analysis
independent sample t test

How to Cite

Hsu, T.-W., Usman, M., Lan, Y.-J., & Lee, Y.-P. (2014). A STUDY OF EXTREME VALUE ANALYSIS ON TYPHOON WAVE. Coastal Engineering Proceedings, 1(34), waves.38. https://doi.org/10.9753/icce.v34.waves.38
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Abstract

Taiwan is a country with a higher number of typhoon events every year, an average of almost 4 typhoons per year attacking Taiwan based on the records of Central Weather Bureau (CWB) of Taiwan from 1958-2012, includes the year event, duration, strength level, path, pressure, wind speed, etc. Beside data from CWB, there are numerical simulation results of events by National Science and Technology Center for Disaster Reduction (NCDR) of Taiwan based on their own prediction system. However there are little has known about the relevancy between the simulated typhoon data from NCDR and recorded typhoon data from CWB. Therefore, this study will focus on comparing the typhoon data from CWB and NCDR by using extreme value analysis for several determined return periods. In general, this research generates the results (wave height) by using extreme value analysis (Gumbel distribution and Weibull distribution) with the help by numerical models (Rankine-Vortex model, Wind Wave Model). After getting the results, this research uses visual analysis and independent samples t test to investigate the results. Based on results analysis, it can be concluded that the simulated typhoon data from NCDR does not represent the recorded typhoon data from CWB very well.
https://doi.org/10.9753/icce.v34.waves.38
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