Title page for etd-0719113-165533


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URN etd-0719113-165533
Author Wei-Hang Chang
Author's Email Address No Public.
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Department IAMPUT
Year 2012
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Correlation Study of Rainfall Intensity and Ocean Ambient Noise of Northeastern Taiwan Sea
Date of Defense 2013-07-08
Page Count 87
Keyword
  • Prediction Equation
  • Northeastern Taiwan
  • Ocean Ambient Noise
  • Rainfall Intensity
  • Rain-generated Noise
  • Linear Regression
  • Abstract The ocean ambient noise is one of the important parameters in sonar equation. The ocean ambient noise includes diverse and complex sources like waves, rain, marine life, ships, and etc. Using different ways to analyze are needed to understand the complicated properties of ambient noise. According to the data of Central Weather Bureau, northeastern Taiwan is the area with most rainfall in Taiwan. Among all kinds of ambient noise, rain-generated noise is wide in frequency range, if we know more about the rain-generated noise at sea, we can predict the effect of rainfall on underwater communication and survey. In this article, the ambient noise data were collected from MACHO(Marine Cable Hosted Observatory)system at northeastern sea of Taiwan in 2011 and 2012. Applying corresponding rainfall intensity data to observed noise level time series, observed ambient noise characteristic of each frquencies. Correlation analysis between rainfall intensity and underwater noise was performed, so the rain-generated noise level can be predicted by linear regression. The ocean ambient noise still has variations due to time and variance of sound sources, so it is important to be investigated. This study compares the statistical properties and distribution of ambient noise level at different frequencies and rainfall intensities, and also seasonal variation were discussed. Speculated the reasons for these differences, this can be the information of ambient noise analysis.
    Advisory Committee
  • Yang, Shiuh-Kuang - chair
  • Linus Y.S. Chiu - co-chair
  • Ruey-Chang Wei - advisor
  • Files
  • etd-0719113-165533.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2013-08-19

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