Meticulous characteristics,classification and distribution of seabed sand wave on the Taiwan bank

Yu Wei; Wu Ziyin; Zhou Jieqiong; Zhao Dineng

doi:10.3969/j.issn.0253-4193.2015.10.002

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Yu Wei, Wu Ziyin, Zhou Jieqiong, Zhao Dineng. Meticulous characteristics,classification and distribution of seabed sand wave on the Taiwan bank[J]. Haiyang Xuebao, 2015, 37(10): 11-25. doi: 10.3969/j.issn.0253-4193.2015.10.002

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Yu Wei, Wu Ziyin, Zhou Jieqiong, Zhao Dineng. Meticulous characteristics,classification and distribution of seabed sand wave on the Taiwan bank[J]. Haiyang Xuebao, 2015, 37(10): 11-25. doi: 10.3969/j.issn.0253-4193.2015.10.002

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Meticulous characteristics,classification and distribution of seabed sand wave on the Taiwan bank

doi: 10.3969/j.issn.0253-4193.2015.10.002

1.
Environment Monitoring Center of the South China Sea, South China Sea Branch of State Oceanic Administration, Guangzhou 510300, China
2.
The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2015-01-16
Rev Recd Date: 2015-06-25

Abstract

Abstract

Lack of accurate multi-beam bathymetric data,publications on meticulous characteristics of sand wave on Taiwan bank are rare. For this reason,the paper presents an approach to objectively analyze large number of sand waves on their meticulous shape characteristics and distribution using multi-beam bathymetric data. The results show that the average of wavelength of sand wave is up to 13.5 m,which is the about 2/3 of the depth of the water,the depth is 20.42 m at the crest of sand wave and the range of the wavelength is almost between 500 m and 700 m. Three types of sand wave are found,which are trochoidal sand wave,sinusoidal sand wave and bimodal sand wave. The occurrence on the west of the bank is bimodal sand wave,the middle is trochoidal sand wave and sinusoidal sand wave. The whole of bank is almost trochoidal sand wave. The influence factors of sand wave are variation of sea level,the long-term sediment flux from Western Taiwanese rivers and hydrodynamic in Taiwan Bank.
- seabed sand wave,
- characteristic,
- classification,
- distribution,
- multi-beam bathymetric,
- Taiwan bank

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References(56)

References

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