IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Persistent and energetic bottom-trapped topographic Rossby waves observed in the southern South China Sea
Shu, Y.; Xue, H.; Wang , D.; Chai, F.; Xie, Q.; Cai, S.; Chen, R.; Chen, J.; Li, J.; He, Y. (2016). Persistent and energetic bottom-trapped topographic Rossby waves observed in the southern South China Sea. NPG Scientific Reports 6(24338): 8 pp. hdl.handle.net/10.1038/srep24338
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine

Authors  Top 
  • Shu, Y.
  • Xue, H.
  • Wang , D.
  • Chai, F.
  • Xie, Q.
  • Cai, S.
  • Chen, R.
  • Chen, J.
  • Li, J.
  • He, Y.

Abstract
    Energetic fluctuations with periods of 9–14 days below a depth of 1400?m were observed in the southern South China Sea (SCS) from 5 years of direct measurements. We interpreted such fluctuations as topographic Rossby waves (TRWs) because they obey the dispersion relation. The TRWs persisted from May 24, 2009 to August 23, 2013, and their bottom current speed with a maximum of ~10?cm/s was one order of magnitude greater than the mean current and comparable to the tidal currents near the bottom. The bottom-trapped TRWs had an approximate trapping depth of 325?m and reference wavelength of ~82?km, which were likely excited by eddies above. Upper layer current speed that peaked approximately every 2 months could offer the energy sources for the persistent TRWs in the southern SCS. Energetic bottom-trapped TRWs may have a comparable role in deep circulation to tides in areas with complex topography.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors