Observing spectral characteristics over a continental shelf and slope in the South China Sea

SHANG Xiaodong; XU Chi; CHEN Guiying; WU Lixin

doi:10.1007/s13131-013-0329-x

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Article Navigation > Acta Oceanologica Sinica > 2013 > 32(7): 29-37

SHANG Xiaodong, XU Chi, CHEN Guiying, WU Lixin. Observing spectral characteristics over a continental shelf and slope in the South China Sea[J]. Acta Oceanologica Sinica, 2013, 32(7): 29-37. doi: 10.1007/s13131-013-0329-x

Citation:

SHANG Xiaodong, XU Chi, CHEN Guiying, WU Lixin. Observing spectral characteristics over a continental shelf and slope in the South China Sea[J]. Acta Oceanologica Sinica, 2013, 32(7): 29-37. doi: 10.1007/s13131-013-0329-x

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Observing spectral characteristics over a continental shelf and slope in the South China Sea

doi: 10.1007/s13131-013-0329-x

1.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China

Received Date: 2012-03-02
Rev Recd Date: 2012-11-15

Abstract

Abstract

Using in situmeasurement data fromMay-June, 1998, and data fromthe Asian seas international acoustics experiment (ASIAEX) from2001 in the South China Sea (SCS), the spectral density function and the dissipation spectrum function are estimated. In the infra-gravity wave (IGW) band, the power spectra of velocity (u, v, w) are universal functionswith respect to characteristic frequencies, which correspond to the peak frequencies of the dissipation spectrum (PFDS). This suggests that high-frequency internal waves in the IGW band have similar dynamical characteristics. In addition, the evolution of these characteristic frequencies is explored and its highest value is 8.8 cph (cycles per hour, 1 cph=2.778×10^-3 Hz).
- dissipation spectra,
- characteristic frequencies,
- South China Sea

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