Showing papers by "Quanan Zheng published in 2003"
TL;DR: In this paper, two contrasting signatures of internal solitary waves (ISWs) are observed: darker stripes leading brighter stripes in the lower part, and brighter stripes leading darker stripes in upper part.
Abstract: [1] On a SPOT-3 visible image over the South China Sea continental shelf, two contrasting signatures of internal solitary waves (ISWs) are observed: darker stripes leading brighter stripes in the lower part, and brighter stripes leading darker stripes in the upper part. The authors suggest that the contrasting patterns are caused by ISWs of different polarities. A packet of ISWs is observed in the process of converting polarity due to bottom shoaling, both in the propagation direction and in the transect direction. The evolution process can be obtained by transferring information from the spatial domain to the temporal domain. The conversion process starts with the original depression ISWs passing the 160 m isobath. The evolution process can be divided into two phases: the first is the broadening of the original depression waves and the second is the appearance of the new-born elevation waves. These two phases are verified using numerical simulation.
54 citations
TL;DR: In this paper, a vector empirical orthogonal function (VEOF) method was used for the analysis of satellite scatterometer winds over the northwestern Pacific and the Hilbert-Huang transform (HHT) was employed in the analysis.
42 citations
TL;DR: In this article, the authors extracted baroclinic tides, that yield energy transmission, from temporarily coherent internal tide signals in the altimeter data and used the field measurements of current velocities in the South China Sea (SCS) to test the method.
Abstract: [1] TOPEX/POSEIDON altimeter data from October 1992 to June 2002 are used to calculate the energy flux of M2 internal tides along the margin of Northwestern Pacific. This arc borderline of the Pacific Basin is characterized by sharp changes in bottom topography, which constitute good boundary conditions for internal tidal energy concentration. We extract baroclinic tides, that yield energy transmission, from temporarily coherent internal tide signals in the altimeter data. We use the field measurements of current velocities in the South China Sea (SCS) to test the method. The results show that satellite-derived M2 tide components agree with the field data very well. Computation results indicate that the maximum energy flux of M2 internal tides, 3 kW m−1, appears in the Ryukyu Trench. The total energy flux of M2 internal tides along the margin of Northwestern Pacific is about 15GW.
20 citations
01 Jan 2003
TL;DR: Quanan Zheng and Zhongxiang Zhao at the University of Delaware, Newark, Delaware, USA as mentioned in this paper, and Pablo Clemente-Colon at NASA Goddard Space Flight Center, Greenbelt, Maryland, USA.
Abstract: Quanan Zheng College of Marine Studies, University of Delaware, Newark, Delaware, USA Samuel S. P. Shen Department of Mathematical Sciences, University of Alberta, Edmonton, Alberta, Canada Yeli Yuan The First Institute of Oceanography, SOA, Qingdao, Shandong, China Norden E. Huang Ocean &Ice Branch, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA Victor Klemas and Xiao-Hai Yan College of Marine Studies, University of Delaware, Newark, Delaware, USA Fengyan Shi Center for Applied Coastal Research, Department of Civil Engineering, University of Delaware, Newark, Delaware, USA Xuebin Zhang and Zhongxiang Zhao College of Marine Studies, University of Delaware, Newark, Delaware, USA Xiaofeng Li and Pablo Clemente-Colon NOAA/NESDIS, E/RA3, Room 102, WWBG, 5200 Auth Road, Camp Springs, Maryland, USA
5 citations